diff options
Diffstat (limited to 'arch/arm/mach-sunxi')
| -rw-r--r-- | arch/arm/mach-sunxi/Makefile | 50 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/board.c | 274 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/clock.c | 65 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/clock_sun4i.c | 238 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/clock_sun6i.c | 274 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/clock_sun8i_a83t.c | 136 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/clock_sun9i.c | 68 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/cpu_info.c | 114 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_helpers.c | 37 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun4i.c | 737 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun6i.c | 411 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun8i_a23.c | 343 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun8i_a33.c | 362 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun8i_a83t.c | 472 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/dram_sun8i_h3.c | 469 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/p2wi.c | 117 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/pinmux.c | 71 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/pmic_bus.c | 113 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/prcm.c | 47 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/rsb.c | 175 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/usb_phy.c | 400 |
21 files changed, 4973 insertions, 0 deletions
diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile new file mode 100644 index 0000000..114cc03 --- /dev/null +++ b/arch/arm/mach-sunxi/Makefile @@ -0,0 +1,50 @@ +# +# (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net> +# +# Based on some other Makefile +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += board.o +obj-y += clock.o +obj-y += cpu_info.o +obj-y += dram_helpers.o +obj-y += pinmux.o +ifndef CONFIG_MACH_SUN9I +obj-y += usb_phy.o +endif +obj-$(CONFIG_MACH_SUN6I) += prcm.o +obj-$(CONFIG_MACH_SUN8I) += prcm.o +obj-$(CONFIG_MACH_SUN9I) += prcm.o +obj-$(CONFIG_MACH_SUN6I) += p2wi.o +obj-$(CONFIG_MACH_SUN8I) += rsb.o +obj-$(CONFIG_MACH_SUN9I) += rsb.o +obj-$(CONFIG_MACH_SUN4I) += clock_sun4i.o +obj-$(CONFIG_MACH_SUN5I) += clock_sun4i.o +obj-$(CONFIG_MACH_SUN6I) += clock_sun6i.o +obj-$(CONFIG_MACH_SUN7I) += clock_sun4i.o +ifdef CONFIG_MACH_SUN8I_A83T +obj-y += clock_sun8i_a83t.o +else +obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o +endif +obj-$(CONFIG_MACH_SUN9I) += clock_sun9i.o + +obj-$(CONFIG_AXP152_POWER) += pmic_bus.o +obj-$(CONFIG_AXP209_POWER) += pmic_bus.o +obj-$(CONFIG_AXP221_POWER) += pmic_bus.o +obj-$(CONFIG_AXP818_POWER) += pmic_bus.o + +ifdef CONFIG_SPL_BUILD +obj-$(CONFIG_MACH_SUN4I) += dram_sun4i.o +obj-$(CONFIG_MACH_SUN5I) += dram_sun4i.o +obj-$(CONFIG_MACH_SUN6I) += dram_sun6i.o +obj-$(CONFIG_MACH_SUN7I) += dram_sun4i.o +obj-$(CONFIG_MACH_SUN8I_A23) += dram_sun8i_a23.o +obj-$(CONFIG_MACH_SUN8I_A33) += dram_sun8i_a33.o +obj-$(CONFIG_MACH_SUN8I_A83T) += dram_sun8i_a83t.o +obj-$(CONFIG_MACH_SUN8I_H3) += dram_sun8i_h3.o +endif diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-sunxi/board.c new file mode 100644 index 0000000..bf58fa9 --- /dev/null +++ b/arch/arm/mach-sunxi/board.c @@ -0,0 +1,274 @@ +/* + * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net> + * + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * Some init for sunxi platform. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <mmc.h> +#include <i2c.h> +#include <serial.h> +#ifdef CONFIG_SPL_BUILD +#include <spl.h> +#endif +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/spl.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/timer.h> +#include <asm/arch/tzpc.h> +#include <asm/arch/mmc.h> + +#include <linux/compiler.h> + +struct fel_stash { + uint32_t sp; + uint32_t lr; + uint32_t cpsr; + uint32_t sctlr; + uint32_t vbar; + uint32_t cr; +}; + +struct fel_stash fel_stash __attribute__((section(".data"))); + +static int gpio_init(void) +{ +#if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F) +#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I) + /* disable GPB22,23 as uart0 tx,rx to avoid conflict */ + sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT); + sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT); +#endif +#if defined(CONFIG_MACH_SUN8I) + sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0); +#else + sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0); +#endif + sunxi_gpio_set_pull(SUNXI_GPF(4), 1); +#elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)) + sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0); + sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I) + sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0); + sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I) + sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0); + sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33) + sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0); + sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_H3) + sunxi_gpio_set_cfgpin(SUNXI_GPA(4), SUN8I_H3_GPA_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPA(5), SUN8I_H3_GPA_UART0); + sunxi_gpio_set_pull(SUNXI_GPA(5), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T) + sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0); + sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I) + sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0); + sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0); + sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I) + sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1); + sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1); + sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I) + sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2); + sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2); + sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); +#elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I) + sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART); + sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART); + sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP); +#else +#error Unsupported console port number. Please fix pin mux settings in board.c +#endif + + return 0; +} + +int spl_board_load_image(void) +{ + debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr); + return_to_fel(fel_stash.sp, fel_stash.lr); + + return 0; +} + +void s_init(void) +{ + /* + * Undocumented magic taken from boot0, without this DRAM + * access gets messed up (seems cache related). + * The boot0 sources describe this as: "config ema for cache sram" + */ +#if defined CONFIG_MACH_SUN6I + setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); +#elif defined CONFIG_MACH_SUN8I + __maybe_unused uint version; + + /* Unlock sram version info reg, read it, relock */ + setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); + version = readl(SUNXI_SRAMC_BASE + 0x24) >> 16; + clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); + + /* + * Ideally this would be a switch case, but we do not know exactly + * which versions there are and which version needs which settings, + * so reproduce the per SoC code from the BSP. + */ +#if defined CONFIG_MACH_SUN8I_A23 + if (version == 0x1650) + setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); + else /* 0x1661 ? */ + setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0); +#elif defined CONFIG_MACH_SUN8I_A33 + if (version != 0x1667) + setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0); +#endif + /* A83T BSP never modifies SUNXI_SRAMC_BASE + 0x44 */ + /* No H3 BSP, boot0 seems to not modify SUNXI_SRAMC_BASE + 0x44 */ +#endif + +#if defined CONFIG_MACH_SUN6I || \ + defined CONFIG_MACH_SUN7I || \ + defined CONFIG_MACH_SUN8I + /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */ + asm volatile( + "mrc p15, 0, r0, c1, c0, 1\n" + "orr r0, r0, #1 << 6\n" + "mcr p15, 0, r0, c1, c0, 1\n"); +#endif +#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3 + /* Enable non-secure access to some peripherals */ + tzpc_init(); +#endif + + clock_init(); + timer_init(); + gpio_init(); + i2c_init_board(); + eth_init_board(); +} + +#ifdef CONFIG_SPL_BUILD +DECLARE_GLOBAL_DATA_PTR; + +/* The sunxi internal brom will try to loader external bootloader + * from mmc0, nand flash, mmc2. + */ +u32 spl_boot_device(void) +{ + __maybe_unused struct mmc *mmc0, *mmc1; + /* + * When booting from the SD card or NAND memory, the "eGON.BT0" + * signature is expected to be found in memory at the address 0x0004 + * (see the "mksunxiboot" tool, which generates this header). + * + * When booting in the FEL mode over USB, this signature is patched in + * memory and replaced with something else by the 'fel' tool. This other + * signature is selected in such a way, that it can't be present in a + * valid bootable SD card image (because the BROM would refuse to + * execute the SPL in this case). + * + * This checks for the signature and if it is not found returns to + * the FEL code in the BROM to wait and receive the main u-boot + * binary over USB. If it is found, it determines where SPL was + * read from. + */ + if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */ + return BOOT_DEVICE_BOARD; + + /* The BROM will try to boot from mmc0 first, so try that first. */ +#ifdef CONFIG_MMC + mmc_initialize(gd->bd); + mmc0 = find_mmc_device(0); + if (sunxi_mmc_has_egon_boot_signature(mmc0)) + return BOOT_DEVICE_MMC1; +#endif + + /* Fallback to booting NAND if enabled. */ + if (IS_ENABLED(CONFIG_SPL_NAND_SUPPORT)) + return BOOT_DEVICE_NAND; + +#ifdef CONFIG_MMC + if (CONFIG_MMC_SUNXI_SLOT_EXTRA == 2) { + mmc1 = find_mmc_device(1); + if (sunxi_mmc_has_egon_boot_signature(mmc1)) + return BOOT_DEVICE_MMC2; + } +#endif + + panic("Could not determine boot source\n"); + return -1; /* Never reached */ +} + +/* No confirmation data available in SPL yet. Hardcode bootmode */ +u32 spl_boot_mode(void) +{ + return MMCSD_MODE_RAW; +} + +void board_init_f(ulong dummy) +{ + spl_init(); + preloader_console_init(); + +#ifdef CONFIG_SPL_I2C_SUPPORT + /* Needed early by sunxi_board_init if PMU is enabled */ + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); +#endif + sunxi_board_init(); +} +#endif + +void reset_cpu(ulong addr) +{ +#ifdef CONFIG_SUNXI_GEN_SUN4I + static const struct sunxi_wdog *wdog = + &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; + + /* Set the watchdog for its shortest interval (.5s) and wait */ + writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); + writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); + + while (1) { + /* sun5i sometimes gets stuck without this */ + writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); + } +#endif +#ifdef CONFIG_SUNXI_GEN_SUN6I + static const struct sunxi_wdog *wdog = + ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; + + /* Set the watchdog for its shortest interval (.5s) and wait */ + writel(WDT_CFG_RESET, &wdog->cfg); + writel(WDT_MODE_EN, &wdog->mode); + writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); + while (1) { } +#endif +} + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif diff --git a/arch/arm/mach-sunxi/clock.c b/arch/arm/mach-sunxi/clock.c new file mode 100644 index 0000000..0b8fc94 --- /dev/null +++ b/arch/arm/mach-sunxi/clock.c @@ -0,0 +1,65 @@ +/* + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +__weak void clock_init_sec(void) +{ +} + +int clock_init(void) +{ +#ifdef CONFIG_SPL_BUILD + clock_init_safe(); +#endif + clock_init_uart(); + clock_init_sec(); + + return 0; +} + +/* These functions are shared between various SoCs so put them here. */ +#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I +int clock_twi_onoff(int port, int state) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (port == 5) { + if (state) + prcm_apb0_enable( + PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C); + else + prcm_apb0_disable( + PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C); + return 0; + } + + /* set the apb clock gate and reset for twi */ + if (state) { + setbits_le32(&ccm->apb2_gate, + CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port)); + setbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_TWI_SHIFT + port)); + } else { + clrbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_TWI_SHIFT + port)); + clrbits_le32(&ccm->apb2_gate, + CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port)); + } + + return 0; +} +#endif diff --git a/arch/arm/mach-sunxi/clock_sun4i.c b/arch/arm/mach-sunxi/clock_sun4i.c new file mode 100644 index 0000000..7e6bd61 --- /dev/null +++ b/arch/arm/mach-sunxi/clock_sun4i.c @@ -0,0 +1,238 @@ +/* + * sun4i, sun5i and sun7i specific clock code + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> + +#ifdef CONFIG_SPL_BUILD +void clock_init_safe(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* Set safe defaults until PMU is configured */ + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + writel(PLL1_CFG_DEFAULT, &ccm->pll1_cfg); + sdelay(200); + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); +#ifdef CONFIG_MACH_SUN7I + setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_DMA); +#endif + writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); +#ifdef CONFIG_SUNXI_AHCI + setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_SATA); + setbits_le32(&ccm->pll6_cfg, 0x1 << CCM_PLL6_CTRL_SATA_EN_SHIFT); +#endif +} +#endif + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* uart clock source is apb1 */ + writel(APB1_CLK_SRC_OSC24M| + APB1_CLK_RATE_N_1| + APB1_CLK_RATE_M(1), + &ccm->apb1_clk_div_cfg); + + /* open the clock for uart */ + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT+CONFIG_CONS_INDEX - 1)); +} + +int clock_twi_onoff(int port, int state) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* set the apb clock gate for twi */ + if (state) + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + else + clrbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + + return 0; +} + +#ifdef CONFIG_SPL_BUILD +#define PLL1_CFG(N, K, M, P) ( 1 << CCM_PLL1_CFG_ENABLE_SHIFT | \ + 0 << CCM_PLL1_CFG_VCO_RST_SHIFT | \ + 8 << CCM_PLL1_CFG_VCO_BIAS_SHIFT | \ + 0 << CCM_PLL1_CFG_PLL4_EXCH_SHIFT | \ + 16 << CCM_PLL1_CFG_BIAS_CUR_SHIFT | \ + (P)<< CCM_PLL1_CFG_DIVP_SHIFT | \ + 2 << CCM_PLL1_CFG_LCK_TMR_SHIFT | \ + (N)<< CCM_PLL1_CFG_FACTOR_N_SHIFT | \ + (K)<< CCM_PLL1_CFG_FACTOR_K_SHIFT | \ + 0 << CCM_PLL1_CFG_SIG_DELT_PAT_IN_SHIFT | \ + 0 << CCM_PLL1_CFG_SIG_DELT_PAT_EN_SHIFT | \ + (M)<< CCM_PLL1_CFG_FACTOR_M_SHIFT) + +static struct { + u32 pll1_cfg; + unsigned int freq; +} pll1_para[] = { + /* This array must be ordered by frequency. */ + { PLL1_CFG(31, 1, 0, 0), 1488000000}, + { PLL1_CFG(30, 1, 0, 0), 1440000000}, + { PLL1_CFG(29, 1, 0, 0), 1392000000}, + { PLL1_CFG(28, 1, 0, 0), 1344000000}, + { PLL1_CFG(27, 1, 0, 0), 1296000000}, + { PLL1_CFG(26, 1, 0, 0), 1248000000}, + { PLL1_CFG(25, 1, 0, 0), 1200000000}, + { PLL1_CFG(24, 1, 0, 0), 1152000000}, + { PLL1_CFG(23, 1, 0, 0), 1104000000}, + { PLL1_CFG(22, 1, 0, 0), 1056000000}, + { PLL1_CFG(21, 1, 0, 0), 1008000000}, + { PLL1_CFG(20, 1, 0, 0), 960000000 }, + { PLL1_CFG(19, 1, 0, 0), 912000000 }, + { PLL1_CFG(16, 1, 0, 0), 768000000 }, + /* Final catchall entry 384MHz*/ + { PLL1_CFG(16, 0, 0, 0), 0 }, + +}; + +void clock_set_pll1(unsigned int hz) +{ + int i = 0; + int axi, ahb, apb0; + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* Find target frequency */ + while (pll1_para[i].freq > hz) + i++; + + hz = pll1_para[i].freq; + if (! hz) + hz = 384000000; + + /* Calculate system clock divisors */ + axi = DIV_ROUND_UP(hz, 432000000); /* Max 450MHz */ + ahb = DIV_ROUND_UP(hz/axi, 204000000); /* Max 250MHz */ + apb0 = 2; /* Max 150MHz */ + + printf("CPU: %uHz, AXI/AHB/APB: %d/%d/%d\n", hz, axi, ahb, apb0); + + /* Map divisors to register values */ + axi = axi - 1; + if (ahb > 4) + ahb = 3; + else if (ahb > 2) + ahb = 2; + else if (ahb > 1) + ahb = 1; + else + ahb = 0; + + apb0 = apb0 - 1; + + /* Switch to 24MHz clock while changing PLL1 */ + writel(AXI_DIV_1 << AXI_DIV_SHIFT | + AHB_DIV_2 << AHB_DIV_SHIFT | + APB0_DIV_1 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + sdelay(20); + + /* Configure sys clock divisors */ + writel(axi << AXI_DIV_SHIFT | + ahb << AHB_DIV_SHIFT | + apb0 << APB0_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + + /* Configure PLL1 at the desired frequency */ + writel(pll1_para[i].pll1_cfg, &ccm->pll1_cfg); + sdelay(200); + + /* Switch CPU to PLL1 */ + writel(axi << AXI_DIV_SHIFT | + ahb << AHB_DIV_SHIFT | + apb0 << APB0_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT, + &ccm->cpu_ahb_apb0_cfg); + sdelay(20); +} +#endif + +void clock_set_pll3(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (clk == 0) { + clrbits_le32(&ccm->pll3_cfg, CCM_PLL3_CTRL_EN); + return; + } + + /* PLL3 rate = 3000000 * m */ + writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE | + CCM_PLL3_CTRL_M(clk / 3000000), &ccm->pll3_cfg); +} + +unsigned int clock_get_pll3(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll3_cfg); + int m = ((rval & CCM_PLL3_CTRL_M_MASK) >> CCM_PLL3_CTRL_M_SHIFT); + return 3000000 * m; +} + +unsigned int clock_get_pll5p(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll5_cfg); + int n = ((rval & CCM_PLL5_CTRL_N_MASK) >> CCM_PLL5_CTRL_N_SHIFT); + int k = ((rval & CCM_PLL5_CTRL_K_MASK) >> CCM_PLL5_CTRL_K_SHIFT) + 1; + int p = ((rval & CCM_PLL5_CTRL_P_MASK) >> CCM_PLL5_CTRL_P_SHIFT); + return (24000000 * n * k) >> p; +} + +unsigned int clock_get_pll6(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll6_cfg); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT); + int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1; + return 24000000 * n * k / 2; +} + +void clock_set_de_mod_clock(u32 *clk_cfg, unsigned int hz) +{ + int pll = clock_get_pll5p(); + int div = 1; + + while ((pll / div) > hz) + div++; + + writel(CCM_DE_CTRL_GATE | CCM_DE_CTRL_RST | CCM_DE_CTRL_PLL5P | + CCM_DE_CTRL_M(div), clk_cfg); +} diff --git a/arch/arm/mach-sunxi/clock_sun6i.c b/arch/arm/mach-sunxi/clock_sun6i.c new file mode 100644 index 0000000..15272c9 --- /dev/null +++ b/arch/arm/mach-sunxi/clock_sun6i.c @@ -0,0 +1,274 @@ +/* + * sun6i specific clock code + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +#ifdef CONFIG_SPL_BUILD +void clock_init_safe(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_prcm_reg * const prcm = + (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; + + /* Set PLL ldo voltage without this PLL6 does not work properly */ + clrsetbits_le32(&prcm->pll_ctrl1, PRCM_PLL_CTRL_LDO_KEY_MASK, + PRCM_PLL_CTRL_LDO_KEY); + clrsetbits_le32(&prcm->pll_ctrl1, ~PRCM_PLL_CTRL_LDO_KEY_MASK, + PRCM_PLL_CTRL_LDO_DIGITAL_EN | PRCM_PLL_CTRL_LDO_ANALOG_EN | + PRCM_PLL_CTRL_EXT_OSC_EN | PRCM_PLL_CTRL_LDO_OUT_L(1140)); + clrbits_le32(&prcm->pll_ctrl1, PRCM_PLL_CTRL_LDO_KEY_MASK); + + clock_set_pll1(408000000); + + writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); + while (!(readl(&ccm->pll6_cfg) & CCM_PLL6_CTRL_LOCK)) + ; + + writel(AHB1_ABP1_DIV_DEFAULT, &ccm->ahb1_apb1_div); + + writel(MBUS_CLK_DEFAULT, &ccm->mbus0_clk_cfg); + writel(MBUS_CLK_DEFAULT, &ccm->mbus1_clk_cfg); +} +#endif + +void clock_init_sec(void) +{ +#ifdef CONFIG_MACH_SUN8I_H3 + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + setbits_le32(&ccm->ccu_sec_switch, + CCM_SEC_SWITCH_MBUS_NONSEC | + CCM_SEC_SWITCH_BUS_NONSEC | + CCM_SEC_SWITCH_PLL_NONSEC); +#endif +} + +void clock_init_uart(void) +{ +#if CONFIG_CONS_INDEX < 5 + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* uart clock source is apb2 */ + writel(APB2_CLK_SRC_OSC24M| + APB2_CLK_RATE_N_1| + APB2_CLK_RATE_M(1), + &ccm->apb2_div); + + /* open the clock for uart */ + setbits_le32(&ccm->apb2_gate, + CLK_GATE_OPEN << (APB2_GATE_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + + /* deassert uart reset */ + setbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); +#else + /* enable R_PIO and R_UART clocks, and de-assert resets */ + prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_UART); +#endif +} + +#ifdef CONFIG_SPL_BUILD +void clock_set_pll1(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int p = 0; + int k = 1; + int m = 1; + + if (clk > 1152000000) { + k = 2; + } else if (clk > 768000000) { + k = 3; + m = 2; + } + + /* Switch to 24MHz clock while changing PLL1 */ + writel(AXI_DIV_3 << AXI_DIV_SHIFT | + ATB_DIV_2 << ATB_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT, + &ccm->cpu_axi_cfg); + + /* + * sun6i: PLL1 rate = ((24000000 * n * k) >> 0) / m (p is ignored) + * sun8i: PLL1 rate = ((24000000 * n * k) >> p) / m + */ + writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_P(p) | + CCM_PLL1_CTRL_N(clk / (24000000 * k / m)) | + CCM_PLL1_CTRL_K(k) | CCM_PLL1_CTRL_M(m), &ccm->pll1_cfg); + sdelay(200); + + /* Switch CPU to PLL1 */ + writel(AXI_DIV_3 << AXI_DIV_SHIFT | + ATB_DIV_2 << ATB_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT, + &ccm->cpu_axi_cfg); +} +#endif + +void clock_set_pll3(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int m = 8; /* 3 MHz steps just like sun4i, sun5i and sun7i */ + + if (clk == 0) { + clrbits_le32(&ccm->pll3_cfg, CCM_PLL3_CTRL_EN); + return; + } + + /* PLL3 rate = 24000000 * n / m */ + writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE | + CCM_PLL3_CTRL_N(clk / (24000000 / m)) | CCM_PLL3_CTRL_M(m), + &ccm->pll3_cfg); +} + +void clock_set_pll5(unsigned int clk, bool sigma_delta_enable) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int max_n = 32; + int k = 1, m = 2; + + if (sigma_delta_enable) + writel(CCM_PLL5_PATTERN, &ccm->pll5_pattern_cfg); + + /* PLL5 rate = 24000000 * n * k / m */ + if (clk > 24000000 * k * max_n / m) { + m = 1; + if (clk > 24000000 * k * max_n / m) + k = 2; + } + writel(CCM_PLL5_CTRL_EN | + (sigma_delta_enable ? CCM_PLL5_CTRL_SIGMA_DELTA_EN : 0) | + CCM_PLL5_CTRL_UPD | + CCM_PLL5_CTRL_N(clk / (24000000 * k / m)) | + CCM_PLL5_CTRL_K(k) | CCM_PLL5_CTRL_M(m), &ccm->pll5_cfg); + + udelay(5500); +} + +#ifdef CONFIG_MACH_SUN6I +void clock_set_mipi_pll(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + unsigned int k, m, n, value, diff; + unsigned best_k = 0, best_m = 0, best_n = 0, best_diff = 0xffffffff; + unsigned int src = clock_get_pll3(); + + /* All calculations are in KHz to avoid overflows */ + clk /= 1000; + src /= 1000; + + /* Pick the closest lower clock */ + for (k = 1; k <= 4; k++) { + for (m = 1; m <= 16; m++) { + for (n = 1; n <= 16; n++) { + value = src * n * k / m; + if (value > clk) + continue; + + diff = clk - value; + if (diff < best_diff) { + best_diff = diff; + best_k = k; + best_m = m; + best_n = n; + } + if (diff == 0) + goto done; + } + } + } + +done: + writel(CCM_MIPI_PLL_CTRL_EN | CCM_MIPI_PLL_CTRL_LDO_EN | + CCM_MIPI_PLL_CTRL_N(best_n) | CCM_MIPI_PLL_CTRL_K(best_k) | + CCM_MIPI_PLL_CTRL_M(best_m), &ccm->mipi_pll_cfg); +} +#endif + +#ifdef CONFIG_MACH_SUN8I_A33 +void clock_set_pll11(unsigned int clk, bool sigma_delta_enable) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (sigma_delta_enable) + writel(CCM_PLL11_PATTERN, &ccm->pll5_pattern_cfg); + + writel(CCM_PLL11_CTRL_EN | CCM_PLL11_CTRL_UPD | + (sigma_delta_enable ? CCM_PLL11_CTRL_SIGMA_DELTA_EN : 0) | + CCM_PLL11_CTRL_N(clk / 24000000), &ccm->pll11_cfg); + + while (readl(&ccm->pll11_cfg) & CCM_PLL11_CTRL_UPD) + ; +} +#endif + +unsigned int clock_get_pll3(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll3_cfg); + int n = ((rval & CCM_PLL3_CTRL_N_MASK) >> CCM_PLL3_CTRL_N_SHIFT) + 1; + int m = ((rval & CCM_PLL3_CTRL_M_MASK) >> CCM_PLL3_CTRL_M_SHIFT) + 1; + + /* Multiply by 1000 after dividing by m to avoid integer overflows */ + return (24000 * n / m) * 1000; +} + +unsigned int clock_get_pll6(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll6_cfg); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT) + 1; + int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1; + return 24000000 * n * k / 2; +} + +unsigned int clock_get_mipi_pll(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->mipi_pll_cfg); + unsigned int n = ((rval & CCM_MIPI_PLL_CTRL_N_MASK) >> CCM_MIPI_PLL_CTRL_N_SHIFT) + 1; + unsigned int k = ((rval & CCM_MIPI_PLL_CTRL_K_MASK) >> CCM_MIPI_PLL_CTRL_K_SHIFT) + 1; + unsigned int m = ((rval & CCM_MIPI_PLL_CTRL_M_MASK) >> CCM_MIPI_PLL_CTRL_M_SHIFT) + 1; + unsigned int src = clock_get_pll3(); + + /* Multiply by 1000 after dividing by m to avoid integer overflows */ + return ((src / 1000) * n * k / m) * 1000; +} + +void clock_set_de_mod_clock(u32 *clk_cfg, unsigned int hz) +{ + int pll = clock_get_pll6() * 2; + int div = 1; + + while ((pll / div) > hz) + div++; + + writel(CCM_DE_CTRL_GATE | CCM_DE_CTRL_PLL6_2X | CCM_DE_CTRL_M(div), + clk_cfg); +} diff --git a/arch/arm/mach-sunxi/clock_sun8i_a83t.c b/arch/arm/mach-sunxi/clock_sun8i_a83t.c new file mode 100644 index 0000000..3e8728f --- /dev/null +++ b/arch/arm/mach-sunxi/clock_sun8i_a83t.c @@ -0,0 +1,136 @@ +/* + * A83 specific clock code + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +#ifdef CONFIG_SPL_BUILD +void clock_init_safe(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + clock_set_pll1(408000000); + /* enable pll_hsic, default is 480M */ + writel(PLL8_CFG_DEFAULT, &ccm->pll8_cfg); + writel(readl(&ccm->pll8_cfg) | (0x1 << 31), &ccm->pll8_cfg); + while (!(readl(&ccm->pll_stable_status) & (1 << 8))) {} + + /* switch to default 24MHz before changing to hsic */ + writel(0x0, &ccm->cci400_cfg); + sdelay(50); + writel(CCM_CCI400_CLK_SEL_HSIC, &ccm->cci400_cfg); + sdelay(100); + + /* switch before changing pll6 */ + clrsetbits_le32(&ccm->ahb1_apb1_div, AHB1_CLK_SRC_MASK, + AHB1_CLK_SRC_OSC24M); + writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); + while (!(readl(&ccm->pll_stable_status) & (1 << 6))) {} + + writel(AHB1_ABP1_DIV_DEFAULT, &ccm->ahb1_apb1_div); + writel(CCM_MBUS_RESET_RESET, &ccm->mbus_reset); + writel(MBUS_CLK_DEFAULT, &ccm->mbus_clk_cfg); + + /* timestamp */ + writel(1, 0x01720000); +} +#endif + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* uart clock source is apb2 */ + writel(APB2_CLK_SRC_OSC24M| + APB2_CLK_RATE_N_1| + APB2_CLK_RATE_M(1), + &ccm->apb2_div); + + /* open the clock for uart */ + setbits_le32(&ccm->apb2_gate, + CLK_GATE_OPEN << (APB2_GATE_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + + /* deassert uart reset */ + setbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); +} + +#ifdef CONFIG_SPL_BUILD +void clock_set_pll1(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int p = 0; + + /* Switch to 24MHz clock while changing PLL1 */ + writel(AXI_DIV_2 << AXI0_DIV_SHIFT | + AXI_DIV_2 << AXI1_DIV_SHIFT | + CPU_CLK_SRC_OSC24M << C0_CPUX_CLK_SRC_SHIFT | + CPU_CLK_SRC_OSC24M << C1_CPUX_CLK_SRC_SHIFT, + &ccm->cpu_axi_cfg); + + /* clk = 24*n/p, p is ignored if clock is >288MHz */ + writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_P(p) | CMM_PLL1_CLOCK_TIME_2 | + CCM_PLL1_CTRL_N(clk / 24000000), + &ccm->pll1_c0_cfg); + while (!(readl(&ccm->pll_stable_status) & 0x01)) {} + + writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_P(p) | CMM_PLL1_CLOCK_TIME_2 | + CCM_PLL1_CTRL_N(clk / (24000000)), + &ccm->pll1_c1_cfg); + while (!(readl(&ccm->pll_stable_status) & 0x02)) {} + + /* Switch CPU to PLL1 */ + writel(AXI_DIV_2 << AXI0_DIV_SHIFT | + AXI_DIV_2 << AXI1_DIV_SHIFT | + CPU_CLK_SRC_PLL1 << C0_CPUX_CLK_SRC_SHIFT | + CPU_CLK_SRC_PLL1 << C1_CPUX_CLK_SRC_SHIFT, + &ccm->cpu_axi_cfg); +} +#endif + +void clock_set_pll5(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + unsigned int div1 = 0, div2 = 0; + + /* A83T PLL5 DDR rate = 24000000 * (n+1)/(div1+1)/(div2+1) */ + writel(CCM_PLL5_CTRL_EN | CCM_PLL5_CTRL_UPD | + CCM_PLL5_CTRL_N(clk / (24000000)) | + div2 << CCM_PLL5_DIV2_SHIFT | + div1 << CCM_PLL5_DIV1_SHIFT, &ccm->pll5_cfg); + + udelay(5500); +} + + +unsigned int clock_get_pll6(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + uint32_t rval = readl(&ccm->pll6_cfg); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT); + int div1 = ((rval & CCM_PLL6_CTRL_DIV1_MASK) >> + CCM_PLL6_CTRL_DIV1_SHIFT) + 1; + int div2 = ((rval & CCM_PLL6_CTRL_DIV2_MASK) >> + CCM_PLL6_CTRL_DIV2_SHIFT) + 1; + return 24000000 * n / div1 / div2; +} diff --git a/arch/arm/mach-sunxi/clock_sun9i.c b/arch/arm/mach-sunxi/clock_sun9i.c new file mode 100644 index 0000000..180634c --- /dev/null +++ b/arch/arm/mach-sunxi/clock_sun9i.c @@ -0,0 +1,68 @@ +/* + * sun9i specific clock code + * + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* open the clock for uart */ + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + /* deassert uart reset */ + setbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + + /* Dup with clock_init_safe(), drop once sun9i SPL support lands */ + writel(PLL4_CFG_DEFAULT, &ccm->pll4_periph0_cfg); +} + +int clock_twi_onoff(int port, int state) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (port > 4) + return -1; + + /* set the apb reset and clock gate for twi */ + if (state) { + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + setbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_TWI_SHIFT + port)); + } else { + clrbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_TWI_SHIFT + port)); + clrbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + } + + return 0; +} + +unsigned int clock_get_pll4_periph0(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll4_periph0_cfg); + int n = ((rval & CCM_PLL4_CTRL_N_MASK) >> CCM_PLL4_CTRL_N_SHIFT); + int p = ((rval & CCM_PLL4_CTRL_P_MASK) >> CCM_PLL4_CTRL_P_SHIFT); + int m = ((rval & CCM_PLL4_CTRL_M_MASK) >> CCM_PLL4_CTRL_M_SHIFT) + 1; + const int k = 1; + + return ((24000000 * n * k) >> p) / m; +} diff --git a/arch/arm/mach-sunxi/cpu_info.c b/arch/arm/mach-sunxi/cpu_info.c new file mode 100644 index 0000000..c0eabdf --- /dev/null +++ b/arch/arm/mach-sunxi/cpu_info.c @@ -0,0 +1,114 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/clock.h> +#include <axp_pmic.h> +#include <errno.h> + +#ifdef CONFIG_MACH_SUN6I +int sunxi_get_ss_bonding_id(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + static int bonding_id = -1; + + if (bonding_id != -1) + return bonding_id; + + /* Enable Security System */ + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS); + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS); + + bonding_id = readl(SUNXI_SS_BASE); + bonding_id = (bonding_id >> 16) & 0x7; + + /* Disable Security System again */ + clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS); + clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS); + + return bonding_id; +} +#endif + +#ifdef CONFIG_MACH_SUN8I +uint sunxi_get_sram_id(void) +{ + uint id; + + /* Unlock sram info reg, read it, relock */ + setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); + id = readl(SUNXI_SRAMC_BASE + 0x24) >> 16; + clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); + + return id; +} +#endif + +#ifdef CONFIG_DISPLAY_CPUINFO +int print_cpuinfo(void) +{ +#ifdef CONFIG_MACH_SUN4I + puts("CPU: Allwinner A10 (SUN4I)\n"); +#elif defined CONFIG_MACH_SUN5I + u32 val = readl(SUNXI_SID_BASE + 0x08); + switch ((val >> 12) & 0xf) { + case 0: puts("CPU: Allwinner A12 (SUN5I)\n"); break; + case 3: puts("CPU: Allwinner A13 (SUN5I)\n"); break; + case 7: puts("CPU: Allwinner A10s (SUN5I)\n"); break; + default: puts("CPU: Allwinner A1X (SUN5I)\n"); + } +#elif defined CONFIG_MACH_SUN6I + switch (sunxi_get_ss_bonding_id()) { + case SUNXI_SS_BOND_ID_A31: + puts("CPU: Allwinner A31 (SUN6I)\n"); + break; + case SUNXI_SS_BOND_ID_A31S: + puts("CPU: Allwinner A31s (SUN6I)\n"); + break; + default: + printf("CPU: Allwinner A31? (SUN6I, id: %d)\n", + sunxi_get_ss_bonding_id()); + } +#elif defined CONFIG_MACH_SUN7I + puts("CPU: Allwinner A20 (SUN7I)\n"); +#elif defined CONFIG_MACH_SUN8I_A23 + printf("CPU: Allwinner A23 (SUN8I %04x)\n", sunxi_get_sram_id()); +#elif defined CONFIG_MACH_SUN8I_A33 + printf("CPU: Allwinner A33 (SUN8I %04x)\n", sunxi_get_sram_id()); +#elif defined CONFIG_MACH_SUN8I_A83T + printf("CPU: Allwinner A83T (SUN8I %04x)\n", sunxi_get_sram_id()); +#elif defined CONFIG_MACH_SUN8I_H3 + printf("CPU: Allwinner H3 (SUN8I %04x)\n", sunxi_get_sram_id()); +#elif defined CONFIG_MACH_SUN9I + puts("CPU: Allwinner A80 (SUN9I)\n"); +#else +#warning Please update cpu_info.c with correct CPU information + puts("CPU: SUNXI Family\n"); +#endif + return 0; +} +#endif + +int sunxi_get_sid(unsigned int *sid) +{ +#ifdef CONFIG_AXP221_POWER + return axp_get_sid(sid); +#elif defined SUNXI_SID_BASE + int i; + + for (i = 0; i< 4; i++) + sid[i] = readl(SUNXI_SID_BASE + 4 * i); + + return 0; +#else + return -ENODEV; +#endif +} diff --git a/arch/arm/mach-sunxi/dram_helpers.c b/arch/arm/mach-sunxi/dram_helpers.c new file mode 100644 index 0000000..9a94e1b --- /dev/null +++ b/arch/arm/mach-sunxi/dram_helpers.c @@ -0,0 +1,37 @@ +/* + * DRAM init helper functions + * + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/dram.h> + +/* + * Wait up to 1s for value to be set in given part of reg. + */ +void mctl_await_completion(u32 *reg, u32 mask, u32 val) +{ + unsigned long tmo = timer_get_us() + 1000000; + + while ((readl(reg) & mask) != val) { + if (timer_get_us() > tmo) + panic("Timeout initialising DRAM\n"); + } +} + +/* + * Test if memory at offset offset matches memory at begin of DRAM + */ +bool mctl_mem_matches(u32 offset) +{ + /* Try to write different values to RAM at two addresses */ + writel(0, CONFIG_SYS_SDRAM_BASE); + writel(0xaa55aa55, CONFIG_SYS_SDRAM_BASE + offset); + /* Check if the same value is actually observed when reading back */ + return readl(CONFIG_SYS_SDRAM_BASE) == + readl(CONFIG_SYS_SDRAM_BASE + offset); +} diff --git a/arch/arm/mach-sunxi/dram_sun4i.c b/arch/arm/mach-sunxi/dram_sun4i.c new file mode 100644 index 0000000..f7b4915 --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun4i.c @@ -0,0 +1,737 @@ +/* + * sunxi DRAM controller initialization + * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net> + * (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net> + * + * Based on sun4i Linux kernel sources mach-sunxi/pm/standby/dram*.c + * and earlier U-Boot Allwiner A10 SPL work + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing <bergxing@allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Unfortunately the only documentation we have on the sun7i DRAM + * controller is Allwinner boot0 + boot1 code, and that code uses + * magic numbers & shifts with no explanations. Hence this code is + * rather undocumented and full of magic. + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/timer.h> +#include <asm/arch/sys_proto.h> + +#define CPU_CFG_CHIP_VER(n) ((n) << 6) +#define CPU_CFG_CHIP_VER_MASK CPU_CFG_CHIP_VER(0x3) +#define CPU_CFG_CHIP_REV_A 0x0 +#define CPU_CFG_CHIP_REV_C1 0x1 +#define CPU_CFG_CHIP_REV_C2 0x2 +#define CPU_CFG_CHIP_REV_B 0x3 + +/* + * Wait up to 1s for mask to be clear in given reg. + */ +static inline void await_bits_clear(u32 *reg, u32 mask) +{ + mctl_await_completion(reg, mask, 0); +} + +/* + * Wait up to 1s for mask to be set in given reg. + */ +static inline void await_bits_set(u32 *reg, u32 mask) +{ + mctl_await_completion(reg, mask, mask); +} + +/* + * This performs the external DRAM reset by driving the RESET pin low and + * then high again. According to the DDR3 spec, the RESET pin needs to be + * kept low for at least 200 us. + */ +static void mctl_ddr3_reset(void) +{ + struct sunxi_dram_reg *dram = + (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + +#ifdef CONFIG_MACH_SUN4I + struct sunxi_timer_reg *timer = + (struct sunxi_timer_reg *)SUNXI_TIMER_BASE; + u32 reg_val; + + writel(0, &timer->cpu_cfg); + reg_val = readl(&timer->cpu_cfg); + + if ((reg_val & CPU_CFG_CHIP_VER_MASK) != + CPU_CFG_CHIP_VER(CPU_CFG_CHIP_REV_A)) { + setbits_le32(&dram->mcr, DRAM_MCR_RESET); + udelay(200); + clrbits_le32(&dram->mcr, DRAM_MCR_RESET); + } else +#endif + { + clrbits_le32(&dram->mcr, DRAM_MCR_RESET); + udelay(200); + setbits_le32(&dram->mcr, DRAM_MCR_RESET); + } + /* After the RESET pin is de-asserted, the DDR3 spec requires to wait + * for additional 500 us before driving the CKE pin (Clock Enable) + * high. The duration of this delay can be configured in the SDR_IDCR + * (Initialization Delay Configuration Register) and applied + * automatically by the DRAM controller during the DDR3 initialization + * step. But SDR_IDCR has limited range on sun4i/sun5i hardware and + * can't provide sufficient delay at DRAM clock frequencies higher than + * 524 MHz (while Allwinner A13 supports DRAM clock frequency up to + * 533 MHz according to the datasheet). Additionally, there is no + * official documentation for the SDR_IDCR register anywhere, and + * there is always a chance that we are interpreting it wrong. + * Better be safe than sorry, so add an explicit delay here. */ + udelay(500); +} + +static void mctl_set_drive(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + +#ifdef CONFIG_MACH_SUN7I + clrsetbits_le32(&dram->mcr, DRAM_MCR_MODE_NORM(0x3) | (0x3 << 28), +#else + clrsetbits_le32(&dram->mcr, DRAM_MCR_MODE_NORM(0x3), +#endif + DRAM_MCR_MODE_EN(0x3) | + 0xffc); +} + +static void mctl_itm_disable(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrsetbits_le32(&dram->ccr, DRAM_CCR_INIT, DRAM_CCR_ITM_OFF); +} + +static void mctl_itm_enable(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrbits_le32(&dram->ccr, DRAM_CCR_ITM_OFF); +} + +static void mctl_itm_reset(void) +{ + mctl_itm_disable(); + udelay(1); /* ITM reset needs a bit of delay */ + mctl_itm_enable(); + udelay(1); +} + +static void mctl_enable_dll0(u32 phase) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + clrsetbits_le32(&dram->dllcr[0], 0x3f << 6, + ((phase >> 16) & 0x3f) << 6); + clrsetbits_le32(&dram->dllcr[0], DRAM_DLLCR_NRESET, DRAM_DLLCR_DISABLE); + udelay(2); + + clrbits_le32(&dram->dllcr[0], DRAM_DLLCR_NRESET | DRAM_DLLCR_DISABLE); + udelay(22); + + clrsetbits_le32(&dram->dllcr[0], DRAM_DLLCR_DISABLE, DRAM_DLLCR_NRESET); + udelay(22); +} + +/* Get the number of DDR byte lanes */ +static u32 mctl_get_number_of_lanes(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + if ((readl(&dram->dcr) & DRAM_DCR_BUS_WIDTH_MASK) == + DRAM_DCR_BUS_WIDTH(DRAM_DCR_BUS_WIDTH_32BIT)) + return 4; + else + return 2; +} + +/* + * Note: This differs from pm/standby in that it checks the bus width + */ +static void mctl_enable_dllx(u32 phase) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 i, number_of_lanes; + + number_of_lanes = mctl_get_number_of_lanes(); + + for (i = 1; i <= number_of_lanes; i++) { + clrsetbits_le32(&dram->dllcr[i], 0xf << 14, + (phase & 0xf) << 14); + clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET, + DRAM_DLLCR_DISABLE); + phase >>= 4; + } + udelay(2); + + for (i = 1; i <= number_of_lanes; i++) + clrbits_le32(&dram->dllcr[i], DRAM_DLLCR_NRESET | + DRAM_DLLCR_DISABLE); + udelay(22); + + for (i = 1; i <= number_of_lanes; i++) + clrsetbits_le32(&dram->dllcr[i], DRAM_DLLCR_DISABLE, + DRAM_DLLCR_NRESET); + udelay(22); +} + +static u32 hpcr_value[32] = { +#ifdef CONFIG_MACH_SUN5I + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0x1031, 0x1031, 0x0735, 0x1035, + 0x1035, 0x0731, 0x1031, 0, + 0x0301, 0x0301, 0x0301, 0x0301, + 0x0301, 0x0301, 0x0301, 0 +#endif +#ifdef CONFIG_MACH_SUN4I + 0x0301, 0x0301, 0x0301, 0x0301, + 0x0301, 0x0301, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0x1031, 0x1031, 0x0735, 0x5031, + 0x1035, 0x0731, 0x1031, 0x0735, + 0x1035, 0x1031, 0x0731, 0x1035, + 0x1031, 0x0301, 0x0301, 0x0731 +#endif +#ifdef CONFIG_MACH_SUN7I + 0x0301, 0x0301, 0x0301, 0x0301, + 0x0301, 0x0301, 0x0301, 0x0301, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0x1031, 0x1031, 0x0735, 0x1035, + 0x1035, 0x0731, 0x1031, 0x0735, + 0x1035, 0x1031, 0x0731, 0x1035, + 0x0001, 0x1031, 0, 0x1031 + /* last row differs from boot0 source table + * 0x1031, 0x0301, 0x0301, 0x0731 + * but boot0 code skips #28 and #30, and sets #29 and #31 to the + * value from #28 entry (0x1031) + */ +#endif +}; + +static void mctl_configure_hostport(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 i; + + for (i = 0; i < 32; i++) + writel(hpcr_value[i], &dram->hpcr[i]); +} + +static void mctl_setup_dram_clock(u32 clk, u32 mbus_clk) +{ + u32 reg_val; + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + u32 pll5p_clk, pll6x_clk; + u32 pll5p_div, pll6x_div; + u32 pll5p_rate, pll6x_rate; + + /* setup DRAM PLL */ + reg_val = readl(&ccm->pll5_cfg); + reg_val &= ~CCM_PLL5_CTRL_M_MASK; /* set M to 0 (x1) */ + reg_val &= ~CCM_PLL5_CTRL_K_MASK; /* set K to 0 (x1) */ + reg_val &= ~CCM_PLL5_CTRL_N_MASK; /* set N to 0 (x0) */ + reg_val &= ~CCM_PLL5_CTRL_P_MASK; /* set P to 0 (x1) */ +#ifdef CONFIG_OLD_SUNXI_KERNEL_COMPAT + /* Old kernels are hardcoded to P=1 (divide by 2) */ + reg_val |= CCM_PLL5_CTRL_P(1); +#endif + if (clk >= 540 && clk < 552) { + /* dram = 540MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(15)); + } else if (clk >= 512 && clk < 528) { + /* dram = 512MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(4)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(16)); + } else if (clk >= 496 && clk < 504) { + /* dram = 496MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(3)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(31)); + } else if (clk >= 468 && clk < 480) { + /* dram = 468MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(13)); + } else if (clk >= 396 && clk < 408) { + /* dram = 396MHz */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(3)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(11)); + } else { + /* any other frequency that is a multiple of 24 */ + reg_val |= CCM_PLL5_CTRL_M(CCM_PLL5_CTRL_M_X(2)); + reg_val |= CCM_PLL5_CTRL_K(CCM_PLL5_CTRL_K_X(2)); + reg_val |= CCM_PLL5_CTRL_N(CCM_PLL5_CTRL_N_X(clk / 24)); + } + reg_val &= ~CCM_PLL5_CTRL_VCO_GAIN; /* PLL VCO Gain off */ + reg_val |= CCM_PLL5_CTRL_EN; /* PLL On */ + writel(reg_val, &ccm->pll5_cfg); + udelay(5500); + + setbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_DDR_CLK); + +#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I) + /* reset GPS */ + clrbits_le32(&ccm->gps_clk_cfg, CCM_GPS_CTRL_RESET | CCM_GPS_CTRL_GATE); + setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS); + udelay(1); + clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS); +#endif + + /* setup MBUS clock */ + if (!mbus_clk) + mbus_clk = 300; + + /* PLL5P and PLL6 are the potential clock sources for MBUS */ + pll6x_clk = clock_get_pll6() / 1000000; +#ifdef CONFIG_MACH_SUN7I + pll6x_clk *= 2; /* sun7i uses PLL6*2, sun5i uses just PLL6 */ +#endif + pll5p_clk = clock_get_pll5p() / 1000000; + pll6x_div = DIV_ROUND_UP(pll6x_clk, mbus_clk); + pll5p_div = DIV_ROUND_UP(pll5p_clk, mbus_clk); + pll6x_rate = pll6x_clk / pll6x_div; + pll5p_rate = pll5p_clk / pll5p_div; + + if (pll6x_div <= 16 && pll6x_rate > pll5p_rate) { + /* use PLL6 as the MBUS clock source */ + reg_val = CCM_MBUS_CTRL_GATE | + CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL6) | + CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(1)) | + CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(pll6x_div)); + } else if (pll5p_div <= 16) { + /* use PLL5P as the MBUS clock source */ + reg_val = CCM_MBUS_CTRL_GATE | + CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL5) | + CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(1)) | + CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(pll5p_div)); + } else { + panic("Bad mbus_clk\n"); + } + writel(reg_val, &ccm->mbus_clk_cfg); + + /* + * open DRAMC AHB & DLL register clock + * close it first + */ +#if defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) + clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL); +#else + clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM); +#endif + udelay(22); + + /* then open it */ +#if defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) + setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL); +#else + setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM); +#endif + udelay(22); +} + +/* + * The data from rslrX and rdgrX registers (X=rank) is stored + * in a single 32-bit value using the following format: + * bits [31:26] - DQS gating system latency for byte lane 3 + * bits [25:24] - DQS gating phase select for byte lane 3 + * bits [23:18] - DQS gating system latency for byte lane 2 + * bits [17:16] - DQS gating phase select for byte lane 2 + * bits [15:10] - DQS gating system latency for byte lane 1 + * bits [ 9:8 ] - DQS gating phase select for byte lane 1 + * bits [ 7:2 ] - DQS gating system latency for byte lane 0 + * bits [ 1:0 ] - DQS gating phase select for byte lane 0 + */ +static void mctl_set_dqs_gating_delay(int rank, u32 dqs_gating_delay) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 lane, number_of_lanes = mctl_get_number_of_lanes(); + /* rank0 gating system latency (3 bits per lane: cycles) */ + u32 slr = readl(rank == 0 ? &dram->rslr0 : &dram->rslr1); + /* rank0 gating phase select (2 bits per lane: 90, 180, 270, 360) */ + u32 dgr = readl(rank == 0 ? &dram->rdgr0 : &dram->rdgr1); + for (lane = 0; lane < number_of_lanes; lane++) { + u32 tmp = dqs_gating_delay >> (lane * 8); + slr &= ~(7 << (lane * 3)); + slr |= ((tmp >> 2) & 7) << (lane * 3); + dgr &= ~(3 << (lane * 2)); + dgr |= (tmp & 3) << (lane * 2); + } + writel(slr, rank == 0 ? &dram->rslr0 : &dram->rslr1); + writel(dgr, rank == 0 ? &dram->rdgr0 : &dram->rdgr1); +} + +static int dramc_scan_readpipe(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 reg_val; + + /* data training trigger */ + clrbits_le32(&dram->csr, DRAM_CSR_FAILED); + setbits_le32(&dram->ccr, DRAM_CCR_DATA_TRAINING); + + /* check whether data training process has completed */ + await_bits_clear(&dram->ccr, DRAM_CCR_DATA_TRAINING); + + /* check data training result */ + reg_val = readl(&dram->csr); + if (reg_val & DRAM_CSR_FAILED) + return -1; + + return 0; +} + +static void dramc_clock_output_en(u32 on) +{ +#if defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + if (on) + setbits_le32(&dram->mcr, DRAM_MCR_DCLK_OUT); + else + clrbits_le32(&dram->mcr, DRAM_MCR_DCLK_OUT); +#endif +#ifdef CONFIG_MACH_SUN4I + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + if (on) + setbits_le32(&ccm->dram_clk_gate, CCM_DRAM_CTRL_DCLK_OUT); + else + clrbits_le32(&ccm->dram_clk_gate, CCM_DRAM_CTRL_DCLK_OUT); +#endif +} + +/* tRFC in nanoseconds for different densities (from the DDR3 spec) */ +static const u16 tRFC_DDR3_table[6] = { + /* 256Mb 512Mb 1Gb 2Gb 4Gb 8Gb */ + 90, 90, 110, 160, 300, 350 +}; + +static void dramc_set_autorefresh_cycle(u32 clk, u32 density) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 tRFC, tREFI; + + tRFC = (tRFC_DDR3_table[density] * clk + 999) / 1000; + tREFI = (7987 * clk) >> 10; /* <= 7.8us */ + + writel(DRAM_DRR_TREFI(tREFI) | DRAM_DRR_TRFC(tRFC), &dram->drr); +} + +/* Calculate the value for A11, A10, A9 bits in MR0 (write recovery) */ +static u32 ddr3_write_recovery(u32 clk) +{ + u32 twr_ns = 15; /* DDR3 spec says that it is 15ns for all speed bins */ + u32 twr_ck = (twr_ns * clk + 999) / 1000; + if (twr_ck < 5) + return 1; + else if (twr_ck <= 8) + return twr_ck - 4; + else if (twr_ck <= 10) + return 5; + else + return 6; +} + +/* + * If the dram->ppwrsctl (SDR_DPCR) register has the lowest bit set to 1, this + * means that DRAM is currently in self-refresh mode and retaining the old + * data. Since we have no idea what to do in this situation yet, just set this + * register to 0 and initialize DRAM in the same way as on any normal reboot + * (discarding whatever was stored there). + * + * Note: on sun7i hardware, the highest 16 bits need to be set to 0x1651 magic + * value for this write operation to have any effect. On sun5i hadware this + * magic value is not necessary. And on sun4i hardware the writes to this + * register seem to have no effect at all. + */ +static void mctl_disable_power_save(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + writel(0x16510000, &dram->ppwrsctl); +} + +/* + * After the DRAM is powered up or reset, the DDR3 spec requires to wait at + * least 500 us before driving the CKE pin (Clock Enable) high. The dram->idct + * (SDR_IDCR) register appears to configure this delay, which gets applied + * right at the time when the DRAM initialization is activated in the + * 'mctl_ddr3_initialize' function. + */ +static void mctl_set_cke_delay(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + + /* The CKE delay is represented in DRAM clock cycles, multiplied by N + * (where N=2 for sun4i/sun5i and N=3 for sun7i). Here it is set to + * the maximum possible value 0x1ffff, just like in the Allwinner's + * boot0 bootloader. The resulting delay value is somewhere between + * ~0.4 ms (sun5i with 648 MHz DRAM clock speed) and ~1.1 ms (sun7i + * with 360 MHz DRAM clock speed). */ + setbits_le32(&dram->idcr, 0x1ffff); +} + +/* + * This triggers the DRAM initialization. It performs sending the mode registers + * to the DRAM among other things. Very likely the ZQCL command is also getting + * executed (to do the initial impedance calibration on the DRAM side of the + * wire). The memory controller and the PHY must be already configured before + * calling this function. + */ +static void mctl_ddr3_initialize(void) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + setbits_le32(&dram->ccr, DRAM_CCR_INIT); + await_bits_clear(&dram->ccr, DRAM_CCR_INIT); +} + +/* + * Perform impedance calibration on the DRAM controller side of the wire. + */ +static void mctl_set_impedance(u32 zq, bool odt_en) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 reg_val; + u32 zprog = zq & 0xFF, zdata = (zq >> 8) & 0xFFFFF; + +#ifndef CONFIG_MACH_SUN7I + /* Appears that some kind of automatically initiated default + * ZQ calibration is already in progress at this point on sun4i/sun5i + * hardware, but not on sun7i. So it is reasonable to wait for its + * completion before doing anything else. */ + await_bits_set(&dram->zqsr, DRAM_ZQSR_ZDONE); +#endif + + /* ZQ calibration is not really useful unless ODT is enabled */ + if (!odt_en) + return; + +#ifdef CONFIG_MACH_SUN7I + /* Enabling ODT in SDR_IOCR on sun7i hardware results in a deadlock + * unless bit 24 is set in SDR_ZQCR1. Not much is known about the + * SDR_ZQCR1 register, but there are hints indicating that it might + * be related to periodic impedance re-calibration. This particular + * magic value is borrowed from the Allwinner boot0 bootloader, and + * using it helps to avoid troubles */ + writel((1 << 24) | (1 << 1), &dram->zqcr1); +#endif + + /* Needed at least for sun5i, because it does not self clear there */ + clrbits_le32(&dram->zqcr0, DRAM_ZQCR0_ZCAL); + + if (zdata) { + /* Set the user supplied impedance data */ + reg_val = DRAM_ZQCR0_ZDEN | zdata; + writel(reg_val, &dram->zqcr0); + /* no need to wait, this takes effect immediately */ + } else { + /* Do the calibration using the external resistor */ + reg_val = DRAM_ZQCR0_ZCAL | DRAM_ZQCR0_IMP_DIV(zprog); + writel(reg_val, &dram->zqcr0); + /* Wait for the new impedance configuration to settle */ + await_bits_set(&dram->zqsr, DRAM_ZQSR_ZDONE); + } + + /* Needed at least for sun5i, because it does not self clear there */ + clrbits_le32(&dram->zqcr0, DRAM_ZQCR0_ZCAL); + + /* Set I/O configure register */ + writel(DRAM_IOCR_ODT_EN, &dram->iocr); +} + +static unsigned long dramc_init_helper(struct dram_para *para) +{ + struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; + u32 reg_val; + u32 density; + int ret_val; + + /* + * only single rank DDR3 is supported by this code even though the + * hardware can theoretically support DDR2 and up to two ranks + */ + if (para->type != DRAM_MEMORY_TYPE_DDR3 || para->rank_num != 1) + return 0; + + /* setup DRAM relative clock */ + mctl_setup_dram_clock(para->clock, para->mbus_clock); + + /* Disable any pad power save control */ + mctl_disable_power_save(); + + mctl_set_drive(); + + /* dram clock off */ + dramc_clock_output_en(0); + +#ifdef CONFIG_MACH_SUN4I + /* select dram controller 1 */ + writel(DRAM_CSEL_MAGIC, &dram->csel); +#endif + + mctl_itm_disable(); + mctl_enable_dll0(para->tpr3); + + /* configure external DRAM */ + reg_val = DRAM_DCR_TYPE_DDR3; + reg_val |= DRAM_DCR_IO_WIDTH(para->io_width >> 3); + + if (para->density == 256) + density = DRAM_DCR_CHIP_DENSITY_256M; + else if (para->density == 512) + density = DRAM_DCR_CHIP_DENSITY_512M; + else if (para->density == 1024) + density = DRAM_DCR_CHIP_DENSITY_1024M; + else if (para->density == 2048) + density = DRAM_DCR_CHIP_DENSITY_2048M; + else if (para->density == 4096) + density = DRAM_DCR_CHIP_DENSITY_4096M; + else if (para->density == 8192) + density = DRAM_DCR_CHIP_DENSITY_8192M; + else + density = DRAM_DCR_CHIP_DENSITY_256M; + + reg_val |= DRAM_DCR_CHIP_DENSITY(density); + reg_val |= DRAM_DCR_BUS_WIDTH((para->bus_width >> 3) - 1); + reg_val |= DRAM_DCR_RANK_SEL(para->rank_num - 1); + reg_val |= DRAM_DCR_CMD_RANK_ALL; + reg_val |= DRAM_DCR_MODE(DRAM_DCR_MODE_INTERLEAVE); + writel(reg_val, &dram->dcr); + + dramc_clock_output_en(1); + + mctl_set_impedance(para->zq, para->odt_en); + + mctl_set_cke_delay(); + + mctl_ddr3_reset(); + + udelay(1); + + await_bits_clear(&dram->ccr, DRAM_CCR_INIT); + + mctl_enable_dllx(para->tpr3); + + /* set refresh period */ + dramc_set_autorefresh_cycle(para->clock, density); + + /* set timing parameters */ + writel(para->tpr0, &dram->tpr0); + writel(para->tpr1, &dram->tpr1); + writel(para->tpr2, &dram->tpr2); + + reg_val = DRAM_MR_BURST_LENGTH(0x0); +#if (defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I)) + reg_val |= DRAM_MR_POWER_DOWN; +#endif + reg_val |= DRAM_MR_CAS_LAT(para->cas - 4); + reg_val |= DRAM_MR_WRITE_RECOVERY(ddr3_write_recovery(para->clock)); + writel(reg_val, &dram->mr); + + writel(para->emr1, &dram->emr); + writel(para->emr2, &dram->emr2); + writel(para->emr3, &dram->emr3); + + /* disable drift compensation and set passive DQS window mode */ + clrsetbits_le32(&dram->ccr, DRAM_CCR_DQS_DRIFT_COMP, DRAM_CCR_DQS_GATE); + +#ifdef CONFIG_MACH_SUN7I + /* Command rate timing mode 2T & 1T */ + if (para->tpr4 & 0x1) + setbits_le32(&dram->ccr, DRAM_CCR_COMMAND_RATE_1T); +#endif + /* initialize external DRAM */ + mctl_ddr3_initialize(); + + /* scan read pipe value */ + mctl_itm_enable(); + + /* Hardware DQS gate training */ + ret_val = dramc_scan_readpipe(); + + if (ret_val < 0) + return 0; + + /* allow to override the DQS training results with a custom delay */ + if (para->dqs_gating_delay) + mctl_set_dqs_gating_delay(0, para->dqs_gating_delay); + + /* set the DQS gating window type */ + if (para->active_windowing) + clrbits_le32(&dram->ccr, DRAM_CCR_DQS_GATE); + else + setbits_le32(&dram->ccr, DRAM_CCR_DQS_GATE); + + mctl_itm_reset(); + + /* configure all host port */ + mctl_configure_hostport(); + + return get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE); +} + +unsigned long dramc_init(struct dram_para *para) +{ + unsigned long dram_size, actual_density; + + /* If the dram configuration is not provided, use a default */ + if (!para) + return 0; + + /* if everything is known, then autodetection is not necessary */ + if (para->io_width && para->bus_width && para->density) + return dramc_init_helper(para); + + /* try to autodetect the DRAM bus width and density */ + para->io_width = 16; + para->bus_width = 32; +#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) + /* only A0-A14 address lines on A10/A13, limiting max density to 4096 */ + para->density = 4096; +#else + /* all A0-A15 address lines on A20, which allow density 8192 */ + para->density = 8192; +#endif + + dram_size = dramc_init_helper(para); + if (!dram_size) { + /* if 32-bit bus width failed, try 16-bit bus width instead */ + para->bus_width = 16; + dram_size = dramc_init_helper(para); + if (!dram_size) { + /* if 16-bit bus width also failed, then bail out */ + return dram_size; + } + } + + /* check if we need to adjust the density */ + actual_density = (dram_size >> 17) * para->io_width / para->bus_width; + + if (actual_density != para->density) { + /* update the density and re-initialize DRAM again */ + para->density = actual_density; + dram_size = dramc_init_helper(para); + } + + return dram_size; +} diff --git a/arch/arm/mach-sunxi/dram_sun6i.c b/arch/arm/mach-sunxi/dram_sun6i.c new file mode 100644 index 0000000..5dbbf61 --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun6i.c @@ -0,0 +1,411 @@ +/* + * Sun6i platform dram controller init. + * + * (C) Copyright 2007-2012 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing <bergxing@allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/prcm.h> + +#define DRAM_CLK (CONFIG_DRAM_CLK * 1000000) + +struct dram_sun6i_para { + u8 bus_width; + u8 chan; + u8 rank; + u8 rows; + u16 page_size; +}; + +static void mctl_sys_init(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + const int dram_clk_div = 2; + + clock_set_pll5(DRAM_CLK * dram_clk_div, false); + + clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV0_MASK, + CCM_DRAMCLK_CFG_DIV0(dram_clk_div) | CCM_DRAMCLK_CFG_RST | + CCM_DRAMCLK_CFG_UPD); + mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0); + + writel(MDFS_CLK_DEFAULT, &ccm->mdfs_clk_cfg); + + /* deassert mctl reset */ + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + + /* enable mctl clock */ + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); +} + +static void mctl_dll_init(int ch_index, struct dram_sun6i_para *para) +{ + struct sunxi_mctl_phy_reg *mctl_phy; + + if (ch_index == 0) + mctl_phy = (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE; + else + mctl_phy = (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY1_BASE; + + /* disable + reset dlls */ + writel(MCTL_DLLCR_DISABLE, &mctl_phy->acdllcr); + writel(MCTL_DLLCR_DISABLE, &mctl_phy->dx0dllcr); + writel(MCTL_DLLCR_DISABLE, &mctl_phy->dx1dllcr); + if (para->bus_width == 32) { + writel(MCTL_DLLCR_DISABLE, &mctl_phy->dx2dllcr); + writel(MCTL_DLLCR_DISABLE, &mctl_phy->dx3dllcr); + } + udelay(2); + + /* enable + reset dlls */ + writel(0, &mctl_phy->acdllcr); + writel(0, &mctl_phy->dx0dllcr); + writel(0, &mctl_phy->dx1dllcr); + if (para->bus_width == 32) { + writel(0, &mctl_phy->dx2dllcr); + writel(0, &mctl_phy->dx3dllcr); + } + udelay(22); + + /* enable and release reset of dlls */ + writel(MCTL_DLLCR_NRESET, &mctl_phy->acdllcr); + writel(MCTL_DLLCR_NRESET, &mctl_phy->dx0dllcr); + writel(MCTL_DLLCR_NRESET, &mctl_phy->dx1dllcr); + if (para->bus_width == 32) { + writel(MCTL_DLLCR_NRESET, &mctl_phy->dx2dllcr); + writel(MCTL_DLLCR_NRESET, &mctl_phy->dx3dllcr); + } + udelay(22); +} + +static bool mctl_rank_detect(u32 *gsr0, int rank) +{ + const u32 done = MCTL_DX_GSR0_RANK0_TRAIN_DONE << rank; + const u32 err = MCTL_DX_GSR0_RANK0_TRAIN_ERR << rank; + + mctl_await_completion(gsr0, done, done); + mctl_await_completion(gsr0 + 0x10, done, done); + + return !(readl(gsr0) & err) && !(readl(gsr0 + 0x10) & err); +} + +static void mctl_channel_init(int ch_index, struct dram_sun6i_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg *mctl_ctl; + struct sunxi_mctl_phy_reg *mctl_phy; + + if (ch_index == 0) { + mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + mctl_phy = (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE; + } else { + mctl_ctl = (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL1_BASE; + mctl_phy = (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY1_BASE; + } + + writel(MCTL_MCMD_NOP, &mctl_ctl->mcmd); + mctl_await_completion(&mctl_ctl->mcmd, MCTL_MCMD_BUSY, 0); + + /* PHY initialization */ + writel(MCTL_PGCR, &mctl_phy->pgcr); + writel(MCTL_MR0, &mctl_phy->mr0); + writel(MCTL_MR1, &mctl_phy->mr1); + writel(MCTL_MR2, &mctl_phy->mr2); + writel(MCTL_MR3, &mctl_phy->mr3); + + writel((MCTL_TITMSRST << 18) | (MCTL_TDLLLOCK << 6) | MCTL_TDLLSRST, + &mctl_phy->ptr0); + + writel((MCTL_TDINIT1 << 19) | MCTL_TDINIT0, &mctl_phy->ptr1); + writel((MCTL_TDINIT3 << 17) | MCTL_TDINIT2, &mctl_phy->ptr2); + + writel((MCTL_TCCD << 31) | (MCTL_TRC << 25) | (MCTL_TRRD << 21) | + (MCTL_TRAS << 16) | (MCTL_TRCD << 12) | (MCTL_TRP << 8) | + (MCTL_TWTR << 5) | (MCTL_TRTP << 2) | (MCTL_TMRD << 0), + &mctl_phy->dtpr0); + + writel((MCTL_TDQSCKMAX << 27) | (MCTL_TDQSCK << 24) | + (MCTL_TRFC << 16) | (MCTL_TRTODT << 11) | + ((MCTL_TMOD - 12) << 9) | (MCTL_TFAW << 3) | (0 << 2) | + (MCTL_TAOND << 0), &mctl_phy->dtpr1); + + writel((MCTL_TDLLK << 19) | (MCTL_TCKE << 15) | (MCTL_TXPDLL << 10) | + (MCTL_TEXSR << 0), &mctl_phy->dtpr2); + + writel(1, &mctl_ctl->dfitphyupdtype0); + writel(MCTL_DCR_DDR3, &mctl_phy->dcr); + writel(MCTL_DSGCR, &mctl_phy->dsgcr); + writel(MCTL_DXCCR, &mctl_phy->dxccr); + writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx0gcr); + writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx1gcr); + writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx2gcr); + writel(MCTL_DX_GCR | MCTL_DX_GCR_EN, &mctl_phy->dx3gcr); + + mctl_await_completion(&mctl_phy->pgsr, 0x03, 0x03); + + writel(CONFIG_DRAM_ZQ, &mctl_phy->zq0cr1); + + setbits_le32(&mctl_phy->pir, MCTL_PIR_CLEAR_STATUS); + writel(MCTL_PIR_STEP1, &mctl_phy->pir); + udelay(10); + mctl_await_completion(&mctl_phy->pgsr, 0x1f, 0x1f); + + /* rank detect */ + if (!mctl_rank_detect(&mctl_phy->dx0gsr0, 1)) { + para->rank = 1; + clrbits_le32(&mctl_phy->pgcr, MCTL_PGCR_RANK); + } + + /* + * channel detect, check channel 1 dx0 and dx1 have rank 0, if not + * assume nothing is connected to channel 1. + */ + if (ch_index == 1 && !mctl_rank_detect(&mctl_phy->dx0gsr0, 0)) { + para->chan = 1; + clrbits_le32(&mctl_com->ccr, MCTL_CCR_CH1_CLK_EN); + return; + } + + /* bus width detect, if dx2 and dx3 don't have rank 0, assume 16 bit */ + if (!mctl_rank_detect(&mctl_phy->dx2gsr0, 0)) { + para->bus_width = 16; + para->page_size = 2048; + setbits_le32(&mctl_phy->dx2dllcr, MCTL_DLLCR_DISABLE); + setbits_le32(&mctl_phy->dx3dllcr, MCTL_DLLCR_DISABLE); + clrbits_le32(&mctl_phy->dx2gcr, MCTL_DX_GCR_EN); + clrbits_le32(&mctl_phy->dx3gcr, MCTL_DX_GCR_EN); + } + + setbits_le32(&mctl_phy->pir, MCTL_PIR_CLEAR_STATUS); + writel(MCTL_PIR_STEP2, &mctl_phy->pir); + udelay(10); + mctl_await_completion(&mctl_phy->pgsr, 0x11, 0x11); + + if (readl(&mctl_phy->pgsr) & MCTL_PGSR_TRAIN_ERR_MASK) + panic("Training error initialising DRAM\n"); + + /* Move to configure state */ + writel(MCTL_SCTL_CONFIG, &mctl_ctl->sctl); + mctl_await_completion(&mctl_ctl->sstat, 0x07, 0x01); + + /* Set number of clks per micro-second */ + writel(DRAM_CLK / 1000000, &mctl_ctl->togcnt1u); + /* Set number of clks per 100 nano-seconds */ + writel(DRAM_CLK / 10000000, &mctl_ctl->togcnt100n); + /* Set memory timing registers */ + writel(MCTL_TREFI, &mctl_ctl->trefi); + writel(MCTL_TMRD, &mctl_ctl->tmrd); + writel(MCTL_TRFC, &mctl_ctl->trfc); + writel((MCTL_TPREA << 16) | MCTL_TRP, &mctl_ctl->trp); + writel(MCTL_TRTW, &mctl_ctl->trtw); + writel(MCTL_TAL, &mctl_ctl->tal); + writel(MCTL_TCL, &mctl_ctl->tcl); + writel(MCTL_TCWL, &mctl_ctl->tcwl); + writel(MCTL_TRAS, &mctl_ctl->tras); + writel(MCTL_TRC, &mctl_ctl->trc); + writel(MCTL_TRCD, &mctl_ctl->trcd); + writel(MCTL_TRRD, &mctl_ctl->trrd); + writel(MCTL_TRTP, &mctl_ctl->trtp); + writel(MCTL_TWR, &mctl_ctl->twr); + writel(MCTL_TWTR, &mctl_ctl->twtr); + writel(MCTL_TEXSR, &mctl_ctl->texsr); + writel(MCTL_TXP, &mctl_ctl->txp); + writel(MCTL_TXPDLL, &mctl_ctl->txpdll); + writel(MCTL_TZQCS, &mctl_ctl->tzqcs); + writel(MCTL_TZQCSI, &mctl_ctl->tzqcsi); + writel(MCTL_TDQS, &mctl_ctl->tdqs); + writel(MCTL_TCKSRE, &mctl_ctl->tcksre); + writel(MCTL_TCKSRX, &mctl_ctl->tcksrx); + writel(MCTL_TCKE, &mctl_ctl->tcke); + writel(MCTL_TMOD, &mctl_ctl->tmod); + writel(MCTL_TRSTL, &mctl_ctl->trstl); + writel(MCTL_TZQCL, &mctl_ctl->tzqcl); + writel(MCTL_TMRR, &mctl_ctl->tmrr); + writel(MCTL_TCKESR, &mctl_ctl->tckesr); + writel(MCTL_TDPD, &mctl_ctl->tdpd); + + /* Unknown magic performed by boot0 */ + setbits_le32(&mctl_ctl->dfiodtcfg, 1 << 3); + clrbits_le32(&mctl_ctl->dfiodtcfg1, 0x1f); + + /* Select 16/32-bits mode for MCTL */ + if (para->bus_width == 16) + setbits_le32(&mctl_ctl->ppcfg, 1); + + /* Set DFI timing registers */ + writel(MCTL_TCWL, &mctl_ctl->dfitphywrl); + writel(MCTL_TCL - 1, &mctl_ctl->dfitrdden); + writel(MCTL_DFITPHYRDL, &mctl_ctl->dfitphyrdl); + writel(MCTL_DFISTCFG0, &mctl_ctl->dfistcfg0); + + writel(MCTL_MCFG_DDR3, &mctl_ctl->mcfg); + + /* DFI update configuration register */ + writel(MCTL_DFIUPDCFG_UPD, &mctl_ctl->dfiupdcfg); + + /* Move to access state */ + writel(MCTL_SCTL_ACCESS, &mctl_ctl->sctl); + mctl_await_completion(&mctl_ctl->sstat, 0x07, 0x03); +} + +static void mctl_com_init(struct dram_sun6i_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_phy_reg * const mctl_phy1 = + (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY1_BASE; + struct sunxi_prcm_reg * const prcm = + (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; + + writel(MCTL_CR_UNKNOWN | MCTL_CR_CHANNEL(para->chan) | MCTL_CR_DDR3 | + ((para->bus_width == 32) ? MCTL_CR_BUSW32 : MCTL_CR_BUSW16) | + MCTL_CR_PAGE_SIZE(para->page_size) | MCTL_CR_ROW(para->rows) | + MCTL_CR_BANK(1) | MCTL_CR_RANK(para->rank), &mctl_com->cr); + + /* Unknown magic performed by boot0 */ + setbits_le32(&mctl_com->dbgcr, (1 << 6)); + + if (para->chan == 1) { + /* Shutdown channel 1 */ + setbits_le32(&mctl_phy1->aciocr, MCTL_ACIOCR_DISABLE); + setbits_le32(&mctl_phy1->dxccr, MCTL_DXCCR_DISABLE); + clrbits_le32(&mctl_phy1->dsgcr, MCTL_DSGCR_ENABLE); + /* + * CH0 ?? this is what boot0 does. Leave as is until we can + * confirm this. + */ + setbits_le32(&prcm->vdd_sys_pwroff, + PRCM_VDD_SYS_DRAM_CH0_PAD_HOLD_PWROFF); + } +} + +static void mctl_port_cfg(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* enable DRAM AXI clock for CPU access */ + setbits_le32(&ccm->axi_gate, 1 << AXI_GATE_OFFSET_DRAM); + + /* Bunch of magic writes performed by boot0 */ + writel(0x00400302, &mctl_com->rmcr[0]); + writel(0x01000307, &mctl_com->rmcr[1]); + writel(0x00400302, &mctl_com->rmcr[2]); + writel(0x01000307, &mctl_com->rmcr[3]); + writel(0x01000307, &mctl_com->rmcr[4]); + writel(0x01000303, &mctl_com->rmcr[6]); + writel(0x01000303, &mctl_com->mmcr[0]); + writel(0x00400310, &mctl_com->mmcr[1]); + writel(0x01000307, &mctl_com->mmcr[2]); + writel(0x01000303, &mctl_com->mmcr[3]); + writel(0x01800303, &mctl_com->mmcr[4]); + writel(0x01800303, &mctl_com->mmcr[5]); + writel(0x01800303, &mctl_com->mmcr[6]); + writel(0x01800303, &mctl_com->mmcr[7]); + writel(0x01000303, &mctl_com->mmcr[8]); + writel(0x00000002, &mctl_com->mmcr[15]); + writel(0x00000310, &mctl_com->mbagcr[0]); + writel(0x00400310, &mctl_com->mbagcr[1]); + writel(0x00400310, &mctl_com->mbagcr[2]); + writel(0x00000307, &mctl_com->mbagcr[3]); + writel(0x00000317, &mctl_com->mbagcr[4]); + writel(0x00000307, &mctl_com->mbagcr[5]); +} + +unsigned long sunxi_dram_init(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + u32 offset; + int bank, bus, columns; + + /* Set initial parameters, these get modified by the autodetect code */ + struct dram_sun6i_para para = { + .bus_width = 32, + .chan = 2, + .rank = 2, + .page_size = 4096, + .rows = 16, + }; + + /* A31s only has one channel */ + if (sunxi_get_ss_bonding_id() == SUNXI_SS_BOND_ID_A31S) + para.chan = 1; + + mctl_sys_init(); + + mctl_dll_init(0, ¶); + setbits_le32(&mctl_com->ccr, MCTL_CCR_CH0_CLK_EN); + + if (para.chan == 2) { + mctl_dll_init(1, ¶); + setbits_le32(&mctl_com->ccr, MCTL_CCR_CH1_CLK_EN); + } + + setbits_le32(&mctl_com->ccr, MCTL_CCR_MASTER_CLK_EN); + + mctl_channel_init(0, ¶); + if (para.chan == 2) + mctl_channel_init(1, ¶); + + mctl_com_init(¶); + mctl_port_cfg(); + + /* + * Change to 1 ch / sequence / 8192 byte pages / 16 rows / + * 8 bit banks / 1 rank mode. + */ + clrsetbits_le32(&mctl_com->cr, + MCTL_CR_CHANNEL_MASK | MCTL_CR_PAGE_SIZE_MASK | + MCTL_CR_ROW_MASK | MCTL_CR_BANK_MASK | MCTL_CR_RANK_MASK, + MCTL_CR_CHANNEL(1) | MCTL_CR_SEQUENCE | + MCTL_CR_PAGE_SIZE(8192) | MCTL_CR_ROW(16) | + MCTL_CR_BANK(1) | MCTL_CR_RANK(1)); + + /* Detect and set page size */ + for (columns = 7; columns < 20; columns++) { + if (mctl_mem_matches(1 << columns)) + break; + } + bus = (para.bus_width == 32) ? 2 : 1; + columns -= bus; + para.page_size = (1 << columns) * (bus << 1); + clrsetbits_le32(&mctl_com->cr, MCTL_CR_PAGE_SIZE_MASK, + MCTL_CR_PAGE_SIZE(para.page_size)); + + /* Detect and set rows */ + for (para.rows = 11; para.rows < 16; para.rows++) { + offset = 1 << (para.rows + columns + bus); + if (mctl_mem_matches(offset)) + break; + } + clrsetbits_le32(&mctl_com->cr, MCTL_CR_ROW_MASK, + MCTL_CR_ROW(para.rows)); + + /* Detect bank size */ + offset = 1 << (para.rows + columns + bus + 2); + bank = mctl_mem_matches(offset) ? 0 : 1; + + /* Restore interleave, chan and rank values, set bank size */ + clrsetbits_le32(&mctl_com->cr, + MCTL_CR_CHANNEL_MASK | MCTL_CR_SEQUENCE | + MCTL_CR_BANK_MASK | MCTL_CR_RANK_MASK, + MCTL_CR_CHANNEL(para.chan) | MCTL_CR_BANK(bank) | + MCTL_CR_RANK(para.rank)); + + return 1 << (para.rank + para.rows + bank + columns + para.chan + bus); +} diff --git a/arch/arm/mach-sunxi/dram_sun8i_a23.c b/arch/arm/mach-sunxi/dram_sun8i_a23.c new file mode 100644 index 0000000..c53671a --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun8i_a23.c @@ -0,0 +1,343 @@ +/* + * Sun8i platform dram controller init. + * + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Note this code uses a lot of magic hex values, that is because this code + * simply replays the init sequence as done by the Allwinner boot0 code, so + * we do not know what these values mean. There are no symbolic constants for + * these magic values, since we do not know how to name them and making up + * names for them is not useful. + * + * The register-layout of the sunxi_mctl_phy_reg-s looks a lot like the one + * found in the TI Keystone2 documentation: + * http://www.ti.com/lit/ug/spruhn7a/spruhn7a.pdf + * "Table4-2 DDR3 PHY Registers" + * This may be used as a (possible) reference for future work / cleanups. + */ + +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/prcm.h> + +static const struct dram_para dram_para = { + .clock = CONFIG_DRAM_CLK, + .type = 3, + .zq = CONFIG_DRAM_ZQ, + .odt_en = IS_ENABLED(CONFIG_DRAM_ODT_EN), + .odt_correction = CONFIG_DRAM_ODT_CORRECTION, + .para1 = 0, /* not used (only used when tpr13 bit 31 is set */ + .para2 = 0, /* not used (only used when tpr13 bit 31 is set */ + .mr0 = 6736, + .mr1 = 4, + .mr2 = 16, + .mr3 = 0, + /* tpr0 - 10 contain timing constants or-ed together in u32 vals */ + .tpr0 = 0x2ab83def, + .tpr1 = 0x18082356, + .tpr2 = 0x00034156, + .tpr3 = 0x448c5533, + .tpr4 = 0x08010d00, + .tpr5 = 0x0340b20f, + .tpr6 = 0x20d118cc, + .tpr7 = 0x14062485, + .tpr8 = 0x220d1d52, + .tpr9 = 0x1e078c22, + .tpr10 = 0x3c, + .tpr11 = 0, /* not used */ + .tpr12 = 0, /* not used */ + .tpr13 = 0x30000, +}; + +static void mctl_sys_init(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* enable pll5, note the divide by 2 is deliberate! */ + clock_set_pll5(dram_para.clock * 1000000 / 2, + dram_para.tpr13 & 0x40000); + + /* deassert ahb mctl reset */ + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + + /* enable ahb mctl clock */ + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); +} + +static void mctl_apply_odt_correction(u32 *reg, int correction) +{ + int val; + + val = (readl(reg) >> 8) & 0xff; + val += correction; + + /* clamp */ + if (val < 0) + val = 0; + else if (val > 255) + val = 255; + + clrsetbits_le32(reg, 0xff00, val << 8); +} + +static void mctl_init(u32 *bus_width) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + struct sunxi_mctl_phy_reg * const mctl_phy = + (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE; + + if (dram_para.tpr13 & 0x20) + writel(0x40b, &mctl_phy->dcr); + else + writel(0x1000040b, &mctl_phy->dcr); + + if (dram_para.clock >= 480) + writel(0x5c000, &mctl_phy->dllgcr); + else + writel(0xdc000, &mctl_phy->dllgcr); + + writel(0x0a003e3f, &mctl_phy->pgcr0); + writel(0x03008421, &mctl_phy->pgcr1); + + writel(dram_para.mr0, &mctl_phy->mr0); + writel(dram_para.mr1, &mctl_phy->mr1); + writel(dram_para.mr2, &mctl_phy->mr2); + writel(dram_para.mr3, &mctl_phy->mr3); + + if (!(dram_para.tpr13 & 0x10000)) { + clrsetbits_le32(&mctl_phy->dx0gcr, 0x3800, 0x2000); + clrsetbits_le32(&mctl_phy->dx1gcr, 0x3800, 0x2000); + } + + /* + * All the masking and shifting below converts what I assume are DDR + * timing constants from Allwinner dram_para tpr format to the actual + * timing registers format. + */ + + writel((dram_para.tpr0 & 0x000fffff), &mctl_phy->ptr2); + writel((dram_para.tpr1 & 0x1fffffff), &mctl_phy->ptr3); + writel((dram_para.tpr0 & 0x3ff00000) >> 2 | + (dram_para.tpr2 & 0x0003ffff), &mctl_phy->ptr4); + + writel(dram_para.tpr3, &mctl_phy->dtpr0); + writel(dram_para.tpr4, &mctl_phy->dtpr2); + + writel(0x01000081, &mctl_phy->dtcr); + + if (dram_para.clock <= 240 || !dram_para.odt_en) { + clrbits_le32(&mctl_phy->dx0gcr, 0x600); + clrbits_le32(&mctl_phy->dx1gcr, 0x600); + } + if (dram_para.clock <= 240) { + writel(0, &mctl_phy->odtcr); + writel(0, &mctl_ctl->odtmap); + } + + writel(((dram_para.tpr5 & 0x0f00) << 12) | + ((dram_para.tpr5 & 0x00f8) << 9) | + ((dram_para.tpr5 & 0x0007) << 8), + &mctl_ctl->rfshctl0); + + writel(((dram_para.tpr5 & 0x0003f000) << 12) | + ((dram_para.tpr5 & 0x00fc0000) >> 2) | + ((dram_para.tpr5 & 0x3f000000) >> 16) | + ((dram_para.tpr6 & 0x0000003f) >> 0), + &mctl_ctl->dramtmg0); + + writel(((dram_para.tpr6 & 0x000007c0) << 10) | + ((dram_para.tpr6 & 0x0000f800) >> 3) | + ((dram_para.tpr6 & 0x003f0000) >> 16), + &mctl_ctl->dramtmg1); + + writel(((dram_para.tpr6 & 0x0fc00000) << 2) | + ((dram_para.tpr7 & 0x0000001f) << 16) | + ((dram_para.tpr7 & 0x000003e0) << 3) | + ((dram_para.tpr7 & 0x0000fc00) >> 10), + &mctl_ctl->dramtmg2); + + writel(((dram_para.tpr7 & 0x03ff0000) >> 16) | + ((dram_para.tpr6 & 0xf0000000) >> 16), + &mctl_ctl->dramtmg3); + + writel(((dram_para.tpr7 & 0x3c000000) >> 2 ) | + ((dram_para.tpr8 & 0x00000007) << 16) | + ((dram_para.tpr8 & 0x00000038) << 5) | + ((dram_para.tpr8 & 0x000003c0) >> 6), + &mctl_ctl->dramtmg4); + + writel(((dram_para.tpr8 & 0x00003c00) << 14) | + ((dram_para.tpr8 & 0x0003c000) << 2) | + ((dram_para.tpr8 & 0x00fc0000) >> 10) | + ((dram_para.tpr8 & 0x0f000000) >> 24), + &mctl_ctl->dramtmg5); + + writel(0x00000008, &mctl_ctl->dramtmg8); + + writel(((dram_para.tpr8 & 0xf0000000) >> 4) | + ((dram_para.tpr9 & 0x00007c00) << 6) | + ((dram_para.tpr9 & 0x000003e0) << 3) | + ((dram_para.tpr9 & 0x0000001f) >> 0), + &mctl_ctl->pitmg0); + + setbits_le32(&mctl_ctl->pitmg1, 0x80000); + + writel(((dram_para.tpr9 & 0x003f8000) << 9) | 0x2001, + &mctl_ctl->sched); + + writel((dram_para.mr0 << 16) | dram_para.mr1, &mctl_ctl->init3); + writel((dram_para.mr2 << 16) | dram_para.mr3, &mctl_ctl->init4); + + writel(0x00000000, &mctl_ctl->pimisc); + writel(0x80000000, &mctl_ctl->upd0); + + writel(((dram_para.tpr9 & 0xffc00000) >> 22) | + ((dram_para.tpr10 & 0x00000fff) << 16), + &mctl_ctl->rfshtmg); + + if (dram_para.tpr13 & 0x20) + writel(0x01040001, &mctl_ctl->mstr); + else + writel(0x01040401, &mctl_ctl->mstr); + + if (!(dram_para.tpr13 & 0x20000)) { + writel(0x00000002, &mctl_ctl->pwrctl); + writel(0x00008001, &mctl_ctl->pwrtmg); + } + + writel(0x00000001, &mctl_ctl->rfshctl3); + writel(0x00000001, &mctl_ctl->pimisc); + + /* deassert dram_clk_cfg reset */ + setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST); + + setbits_le32(&mctl_com->ccr, 0x80000); + + /* zq stuff */ + writel((dram_para.zq >> 8) & 0xff, &mctl_phy->zqcr1); + + writel(0x00000003, &mctl_phy->pir); + udelay(10); + mctl_await_completion(&mctl_phy->pgsr0, 0x09, 0x09); + + writel(readl(&mctl_phy->zqsr0) | 0x10000000, &mctl_phy->zqcr2); + writel(dram_para.zq & 0xff, &mctl_phy->zqcr1); + + /* A23-v1.0 SDK uses 0xfdf3, A23-v2.0 SDK uses 0x5f3 */ + writel(0x000005f3, &mctl_phy->pir); + udelay(10); + mctl_await_completion(&mctl_phy->pgsr0, 0x03, 0x03); + + if (readl(&mctl_phy->dx1gsr0) & 0x1000000) { + *bus_width = 8; + writel(0, &mctl_phy->dx1gcr); + writel(dram_para.zq & 0xff, &mctl_phy->zqcr1); + writel(0x5f3, &mctl_phy->pir); + udelay(10000); + setbits_le32(&mctl_ctl->mstr, 0x1000); + } else + *bus_width = 16; + + if (dram_para.odt_correction) { + mctl_apply_odt_correction(&mctl_phy->dx0lcdlr1, + dram_para.odt_correction); + mctl_apply_odt_correction(&mctl_phy->dx1lcdlr1, + dram_para.odt_correction); + } + + mctl_await_completion(&mctl_ctl->statr, 0x01, 0x01); + + writel(0x08003e3f, &mctl_phy->pgcr0); + writel(0x00000000, &mctl_ctl->rfshctl3); +} + +unsigned long sunxi_dram_init(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + const u32 columns = 13; + u32 bus, bus_width, offset, page_size, rows; + + mctl_sys_init(); + mctl_init(&bus_width); + + if (bus_width == 16) { + page_size = 8; + bus = 1; + } else { + page_size = 7; + bus = 0; + } + + if (!(dram_para.tpr13 & 0x80000000)) { + /* Detect and set rows */ + writel(0x000310f4 | MCTL_CR_PAGE_SIZE(page_size), + &mctl_com->cr); + setbits_le32(&mctl_com->swonr, 0x0003ffff); + for (rows = 11; rows < 16; rows++) { + offset = 1 << (rows + columns + bus); + if (mctl_mem_matches(offset)) + break; + } + clrsetbits_le32(&mctl_com->cr, MCTL_CR_ROW_MASK, + MCTL_CR_ROW(rows)); + } else { + rows = (dram_para.para1 >> 16) & 0xff; + writel(((dram_para.para2 & 0x000000f0) << 11) | + ((rows - 1) << 4) | + ((dram_para.para1 & 0x0f000000) >> 22) | + 0x31000 | MCTL_CR_PAGE_SIZE(page_size), + &mctl_com->cr); + setbits_le32(&mctl_com->swonr, 0x0003ffff); + } + + /* Setup DRAM master priority? If this is left out things still work */ + writel(0x00000008, &mctl_com->mcr0_0); + writel(0x0001000d, &mctl_com->mcr1_0); + writel(0x00000004, &mctl_com->mcr0_1); + writel(0x00000080, &mctl_com->mcr1_1); + writel(0x00000004, &mctl_com->mcr0_2); + writel(0x00000019, &mctl_com->mcr1_2); + writel(0x00000004, &mctl_com->mcr0_3); + writel(0x00000080, &mctl_com->mcr1_3); + writel(0x00000004, &mctl_com->mcr0_4); + writel(0x01010040, &mctl_com->mcr1_4); + writel(0x00000004, &mctl_com->mcr0_5); + writel(0x0001002f, &mctl_com->mcr1_5); + writel(0x00000004, &mctl_com->mcr0_6); + writel(0x00010020, &mctl_com->mcr1_6); + writel(0x00000004, &mctl_com->mcr0_7); + writel(0x00010020, &mctl_com->mcr1_7); + writel(0x00000008, &mctl_com->mcr0_8); + writel(0x00000001, &mctl_com->mcr1_8); + writel(0x00000008, &mctl_com->mcr0_9); + writel(0x00000005, &mctl_com->mcr1_9); + writel(0x00000008, &mctl_com->mcr0_10); + writel(0x00000003, &mctl_com->mcr1_10); + writel(0x00000008, &mctl_com->mcr0_11); + writel(0x00000005, &mctl_com->mcr1_11); + writel(0x00000008, &mctl_com->mcr0_12); + writel(0x00000003, &mctl_com->mcr1_12); + writel(0x00000008, &mctl_com->mcr0_13); + writel(0x00000004, &mctl_com->mcr1_13); + writel(0x00000008, &mctl_com->mcr0_14); + writel(0x00000002, &mctl_com->mcr1_14); + writel(0x00000008, &mctl_com->mcr0_15); + writel(0x00000003, &mctl_com->mcr1_15); + writel(0x00010138, &mctl_com->bwcr); + + return 1 << (rows + columns + bus); +} diff --git a/arch/arm/mach-sunxi/dram_sun8i_a33.c b/arch/arm/mach-sunxi/dram_sun8i_a33.c new file mode 100644 index 0000000..fa1620c --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun8i_a33.c @@ -0,0 +1,362 @@ +/* + * Sun8i a33 platform dram controller init. + * + * (C) Copyright 2007-2015 Allwinner Technology Co. + * Jerry Wang <wangflord@allwinnertech.com> + * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com> + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/prcm.h> + +/* PLL runs at 2x dram-clk, controller runs at PLL / 4 (dram-clk / 2) */ +#define DRAM_CLK_MUL 2 +#define DRAM_CLK_DIV 4 +#define DRAM_SIGMA_DELTA_ENABLE 1 + +struct dram_para { + u8 cs1; + u8 seq; + u8 bank; + u8 rank; + u8 rows; + u8 bus_width; + u16 page_size; +}; + +static void mctl_set_cr(struct dram_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + + writel(MCTL_CR_CS1_CONTROL(para->cs1) | MCTL_CR_UNKNOWN | + MCTL_CR_CHANNEL(1) | MCTL_CR_DDR3 | + (para->seq ? MCTL_CR_SEQUENCE : 0) | + ((para->bus_width == 16) ? MCTL_CR_BUSW16 : MCTL_CR_BUSW8) | + MCTL_CR_PAGE_SIZE(para->page_size) | MCTL_CR_ROW(para->rows) | + MCTL_CR_BANK(para->bank) | MCTL_CR_RANK(para->rank), + &mctl_com->cr); +} + +static void auto_detect_dram_size(struct dram_para *para) +{ + u8 orig_rank = para->rank; + int rows, columns; + + /* Row detect */ + para->page_size = 512; + para->seq = 1; + para->rows = 16; + para->rank = 1; + mctl_set_cr(para); + for (rows = 11 ; rows < 16 ; rows++) { + if (mctl_mem_matches(1 << (rows + 9))) /* row-column */ + break; + } + + /* Column (page size) detect */ + para->rows = 11; + para->page_size = 8192; + mctl_set_cr(para); + for (columns = 9 ; columns < 13 ; columns++) { + if (mctl_mem_matches(1 << columns)) + break; + } + + para->seq = 0; + para->rank = orig_rank; + para->rows = rows; + para->page_size = 1 << columns; + mctl_set_cr(para); +} + +static inline int ns_to_t(int nanoseconds) +{ + const unsigned int ctrl_freq = + CONFIG_DRAM_CLK * DRAM_CLK_MUL / DRAM_CLK_DIV; + + return (ctrl_freq * nanoseconds + 999) / 1000; +} + +static void auto_set_timing_para(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + u32 reg_val; + + u8 tccd = 2; + u8 tfaw = ns_to_t(50); + u8 trrd = max(ns_to_t(10), 4); + u8 trcd = ns_to_t(15); + u8 trc = ns_to_t(53); + u8 txp = max(ns_to_t(8), 3); + u8 twtr = max(ns_to_t(8), 4); + u8 trtp = max(ns_to_t(8), 4); + u8 twr = max(ns_to_t(15), 3); + u8 trp = ns_to_t(15); + u8 tras = ns_to_t(38); + + u16 trefi = ns_to_t(7800) / 32; + u16 trfc = ns_to_t(350); + + /* Fixed timing parameters */ + u8 tmrw = 0; + u8 tmrd = 4; + u8 tmod = 12; + u8 tcke = 3; + u8 tcksrx = 5; + u8 tcksre = 5; + u8 tckesr = 4; + u8 trasmax = 24; + u8 tcl = 6; /* CL 12 */ + u8 tcwl = 4; /* CWL 8 */ + u8 t_rdata_en = 4; + u8 wr_latency = 2; + + u32 tdinit0 = (500 * CONFIG_DRAM_CLK) + 1; /* 500us */ + u32 tdinit1 = (360 * CONFIG_DRAM_CLK) / 1000 + 1; /* 360ns */ + u32 tdinit2 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */ + u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */ + + u8 twtp = tcwl + 2 + twr; /* WL + BL / 2 + tWR */ + u8 twr2rd = tcwl + 2 + twtr; /* WL + BL / 2 + tWTR */ + u8 trd2wr = tcl + 2 + 1 - tcwl; /* RL + BL / 2 + 2 - WL */ + + /* Set work mode register */ + mctl_set_cr(para); + /* Set mode register */ + writel(MCTL_MR0, &mctl_ctl->mr0); + writel(MCTL_MR1, &mctl_ctl->mr1); + writel(MCTL_MR2, &mctl_ctl->mr2); + writel(MCTL_MR3, &mctl_ctl->mr3); + /* Set dram timing */ + reg_val = (twtp << 24) | (tfaw << 16) | (trasmax << 8) | (tras << 0); + writel(reg_val, &mctl_ctl->dramtmg0); + reg_val = (txp << 16) | (trtp << 8) | (trc << 0); + writel(reg_val, &mctl_ctl->dramtmg1); + reg_val = (tcwl << 24) | (tcl << 16) | (trd2wr << 8) | (twr2rd << 0); + writel(reg_val, &mctl_ctl->dramtmg2); + reg_val = (tmrw << 16) | (tmrd << 12) | (tmod << 0); + writel(reg_val, &mctl_ctl->dramtmg3); + reg_val = (trcd << 24) | (tccd << 16) | (trrd << 8) | (trp << 0); + writel(reg_val, &mctl_ctl->dramtmg4); + reg_val = (tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | (tcke << 0); + writel(reg_val, &mctl_ctl->dramtmg5); + /* Set two rank timing and exit self-refresh timing */ + reg_val = readl(&mctl_ctl->dramtmg8); + reg_val &= ~(0xff << 8); + reg_val &= ~(0xff << 0); + reg_val |= (0x33 << 8); + reg_val |= (0x8 << 0); + writel(reg_val, &mctl_ctl->dramtmg8); + /* Set phy interface time */ + reg_val = (0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) + | (wr_latency << 0); + /* PHY interface write latency and read latency configure */ + writel(reg_val, &mctl_ctl->pitmg0); + /* Set phy time PTR0-2 use default */ + writel(((tdinit0 << 0) | (tdinit1 << 20)), &mctl_ctl->ptr3); + writel(((tdinit2 << 0) | (tdinit3 << 20)), &mctl_ctl->ptr4); + /* Set refresh timing */ + reg_val = (trefi << 16) | (trfc << 0); + writel(reg_val, &mctl_ctl->rfshtmg); +} + +static void mctl_set_pir(u32 val) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + writel(val, &mctl_ctl->pir); + mctl_await_completion(&mctl_ctl->pgsr0, 0x1, 0x1); +} + +static void mctl_data_train_cfg(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + if (para->rank == 2) + clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x3 << 24); + else + clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x1 << 24); +} + +static int mctl_train_dram(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + mctl_data_train_cfg(para); + mctl_set_pir(0x5f3); + + return ((readl(&mctl_ctl->pgsr0) >> 20) & 0xff) ? -EIO : 0; +} + +static int mctl_channel_init(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + u32 low_data_lines_status; /* Training status of datalines 0 - 7 */ + u32 high_data_lines_status; /* Training status of datalines 8 - 15 */ + + auto_set_timing_para(para); + + /* Disable dram VTC */ + clrbits_le32(&mctl_ctl->pgcr0, 0x3f << 0); + + /* Set ODT */ + if ((CONFIG_DRAM_CLK > 400) && IS_ENABLED(CONFIG_DRAM_ODT_EN)) { + setbits_le32(DXnGCR0(0), 0x3 << 9); + setbits_le32(DXnGCR0(1), 0x3 << 9); + } else { + clrbits_le32(DXnGCR0(0), 0x3 << 9); + clrbits_le32(DXnGCR0(1), 0x3 << 9); + } + + /* set PLL configuration */ + if (CONFIG_DRAM_CLK >= 480) + setbits_le32(&mctl_ctl->pllgcr, 0x1 << 18); + else + setbits_le32(&mctl_ctl->pllgcr, 0x3 << 18); + + /* Auto detect dram config, set 2 rank and 16bit bus-width */ + para->cs1 = 0; + para->rank = 2; + para->bus_width = 16; + mctl_set_cr(para); + + /* Open DQS gating */ + clrbits_le32(&mctl_ctl->pgcr2, (0x3 << 6)); + clrbits_le32(&mctl_ctl->dqsgmr, (0x1 << 8) | (0x7)); + + mctl_data_train_cfg(para); + + /* ZQ calibration */ + writel(CONFIG_DRAM_ZQ & 0xff, &mctl_ctl->zqcr1); + /* CA calibration */ + mctl_set_pir(0x00000003); + /* More ZQ calibration */ + writel(readl(&mctl_ctl->zqsr0) | 0x10000000, &mctl_ctl->zqcr2); + writel((CONFIG_DRAM_ZQ >> 8) & 0xff, &mctl_ctl->zqcr1); + + /* DQS gate training */ + if (mctl_train_dram(para) != 0) { + low_data_lines_status = (readl(DXnGSR0(0)) >> 24) & 0x03; + high_data_lines_status = (readl(DXnGSR0(1)) >> 24) & 0x03; + + if (low_data_lines_status == 0x3) + return -EIO; + + /* DRAM has only one rank */ + para->rank = 1; + mctl_set_cr(para); + + if (low_data_lines_status == high_data_lines_status) + goto done; /* 16 bit bus, 1 rank */ + + if (!(low_data_lines_status & high_data_lines_status)) { + /* Retry 16 bit bus-width with CS1 set */ + para->cs1 = 1; + mctl_set_cr(para); + if (mctl_train_dram(para) == 0) + goto done; + } + + /* Try 8 bit bus-width */ + writel(0x0, DXnGCR0(1)); /* Disable high DQ */ + para->cs1 = 0; + para->bus_width = 8; + mctl_set_cr(para); + if (mctl_train_dram(para) != 0) + return -EIO; + } +done: + /* Check the dramc status */ + mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1); + + /* Close DQS gating */ + setbits_le32(&mctl_ctl->pgcr2, 0x3 << 6); + + /* Enable master access */ + writel(0xffffffff, &mctl_com->maer); + + return 0; +} + +static void mctl_sys_init(struct dram_para *para) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + + clrsetbits_le32(&ccm->dram_pll_cfg, CCM_DRAMPLL_CFG_SRC_MASK, + CCM_DRAMPLL_CFG_SRC_PLL11); + + clock_set_pll11(CONFIG_DRAM_CLK * 1000000 * DRAM_CLK_MUL, + DRAM_SIGMA_DELTA_ENABLE); + + clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV_MASK, + CCM_DRAMCLK_CFG_DIV(DRAM_CLK_DIV) | + CCM_DRAMCLK_CFG_RST | CCM_DRAMCLK_CFG_UPD); + mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0); + + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); + setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); + setbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE); + + /* Set dram master access priority */ + writel(0x0, &mctl_com->mapr); + writel(0x0f802f01, &mctl_ctl->sched); + writel(0x0000400f, &mctl_ctl->clken); /* normal */ + + udelay(250); +} + +unsigned long sunxi_dram_init(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + struct dram_para para = { + .cs1 = 0, + .bank = 1, + .rank = 1, + .rows = 15, + .bus_width = 16, + .page_size = 2048, + }; + + mctl_sys_init(¶); + + if (mctl_channel_init(¶) != 0) + return 0; + + auto_detect_dram_size(¶); + + /* Enable master software clk */ + writel(readl(&mctl_com->swonr) | 0x3ffff, &mctl_com->swonr); + + /* Set DRAM ODT MAP */ + if (para.rank == 2) + writel(0x00000303, &mctl_ctl->odtmap); + else + writel(0x00000201, &mctl_ctl->odtmap); + + return para.page_size * (para.bus_width / 8) * + (1 << (para.bank + para.rank + para.rows)); +} diff --git a/arch/arm/mach-sunxi/dram_sun8i_a83t.c b/arch/arm/mach-sunxi/dram_sun8i_a83t.c new file mode 100644 index 0000000..55df1b9 --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun8i_a83t.c @@ -0,0 +1,472 @@ +/* + * Sun8i a33 platform dram controller init. + * + * (C) Copyright 2007-2015 Allwinner Technology Co. + * Jerry Wang <wangflord@allwinnertech.com> + * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com> + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <asm/arch/prcm.h> + +#define DRAM_CLK_MUL 2 +#define DRAM_CLK_DIV 1 + +struct dram_para { + u8 cs1; + u8 seq; + u8 bank; + u8 rank; + u8 rows; + u8 bus_width; + u8 dram_type; + u16 page_size; +}; + +static void mctl_set_cr(struct dram_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + + writel(MCTL_CR_CS1_CONTROL(para->cs1) | MCTL_CR_UNKNOWN | + MCTL_CR_CHANNEL(1) | MCTL_CR_DRAM_TYPE(para->dram_type) | + (para->seq ? MCTL_CR_SEQUENCE : 0) | + ((para->bus_width == 16) ? MCTL_CR_BUSW16 : MCTL_CR_BUSW8) | + MCTL_CR_PAGE_SIZE(para->page_size) | MCTL_CR_ROW(para->rows) | + MCTL_CR_BANK(para->bank) | MCTL_CR_RANK(para->rank), + &mctl_com->cr); +} + +static void auto_detect_dram_size(struct dram_para *para) +{ + u8 orig_rank = para->rank; + int rows, columns; + + /* Row detect */ + para->page_size = 512; + para->seq = 1; + para->rows = 16; + para->rank = 1; + mctl_set_cr(para); + for (rows = 11 ; rows < 16 ; rows++) { + if (mctl_mem_matches(1 << (rows + 9))) /* row-column */ + break; + } + + /* Column (page size) detect */ + para->rows = 11; + para->page_size = 8192; + mctl_set_cr(para); + for (columns = 9 ; columns < 13 ; columns++) { + if (mctl_mem_matches(1 << columns)) + break; + } + + para->seq = 0; + para->rank = orig_rank; + para->rows = rows; + para->page_size = 1 << columns; + mctl_set_cr(para); +} + +static inline int ns_to_t(int nanoseconds) +{ + const unsigned int ctrl_freq = + CONFIG_DRAM_CLK * DRAM_CLK_MUL / DRAM_CLK_DIV; + + return (ctrl_freq * nanoseconds + 999) / 1000; +} + +static void auto_set_timing_para(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + u32 reg_val; + + u8 tccd = 2; + u8 tfaw = ns_to_t(50); + u8 trrd = max(ns_to_t(10), 4); + u8 trcd = ns_to_t(15); + u8 trc = ns_to_t(53); + u8 txp = max(ns_to_t(8), 3); + u8 twtr = max(ns_to_t(8), 4); + u8 trtp = max(ns_to_t(8), 4); + u8 twr = max(ns_to_t(15), 3); + u8 trp = ns_to_t(15); + u8 tras = ns_to_t(38); + + u16 trefi = ns_to_t(7800) / 32; + u16 trfc = ns_to_t(350); + + /* Fixed timing parameters */ + u8 tmrw = 0; + u8 tmrd = 4; + u8 tmod = 12; + u8 tcke = 3; + u8 tcksrx = 5; + u8 tcksre = 5; + u8 tckesr = 4; + u8 trasmax = 24; + u8 tcl = 6; /* CL 12 */ + u8 tcwl = 4; /* CWL 8 */ + u8 t_rdata_en = 4; + u8 wr_latency = 2; + + u32 tdinit0 = (500 * CONFIG_DRAM_CLK) + 1; /* 500us */ + u32 tdinit1 = (360 * CONFIG_DRAM_CLK) / 1000 + 1; /* 360ns */ + u32 tdinit2 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */ + u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */ + + u8 twtp = tcwl + 2 + twr; /* WL + BL / 2 + tWR */ + u8 twr2rd = tcwl + 2 + twtr; /* WL + BL / 2 + tWTR */ + u8 trd2wr = tcl + 2 + 1 - tcwl; /* RL + BL / 2 + 2 - WL */ + + /* Set work mode register */ + mctl_set_cr(para); + /* Set mode register */ + if (para->dram_type == DRAM_TYPE_DDR3) { + writel(MCTL_MR0, &mctl_ctl->mr0); + writel(MCTL_MR1, &mctl_ctl->mr1); + writel(MCTL_MR2, &mctl_ctl->mr2); + writel(MCTL_MR3, &mctl_ctl->mr3); + } else if (para->dram_type == DRAM_TYPE_LPDDR3) { + writel(MCTL_LPDDR3_MR0, &mctl_ctl->mr0); + writel(MCTL_LPDDR3_MR1, &mctl_ctl->mr1); + writel(MCTL_LPDDR3_MR2, &mctl_ctl->mr2); + writel(MCTL_LPDDR3_MR3, &mctl_ctl->mr3); + + /* timing parameters for LPDDR3 */ + tfaw = max(ns_to_t(50), 4); + trrd = max(ns_to_t(10), 2); + trcd = max(ns_to_t(24), 2); + trc = ns_to_t(70); + txp = max(ns_to_t(8), 2); + twtr = max(ns_to_t(8), 2); + trtp = max(ns_to_t(8), 2); + trp = max(ns_to_t(27), 2); + tras = ns_to_t(42); + trefi = ns_to_t(3900) / 32; + trfc = ns_to_t(210); + tmrw = 5; + tmrd = 5; + tckesr = 5; + tcwl = 3; /* CWL 8 */ + t_rdata_en = 5; + tdinit0 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */ + tdinit1 = (100 * CONFIG_DRAM_CLK) / 1000 + 1; /* 100ns */ + tdinit2 = (11 * CONFIG_DRAM_CLK) + 1; /* 200us */ + tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */ + twtp = tcwl + 4 + twr + 1; /* CWL + BL/2 + tWR */ + twr2rd = tcwl + 4 + 1 + twtr; /* WL + BL / 2 + tWTR */ + trd2wr = tcl + 4 + 5 - tcwl + 1; /* RL + BL / 2 + 2 - WL */ + } + /* Set dram timing */ + reg_val = (twtp << 24) | (tfaw << 16) | (trasmax << 8) | (tras << 0); + writel(reg_val, &mctl_ctl->dramtmg0); + reg_val = (txp << 16) | (trtp << 8) | (trc << 0); + writel(reg_val, &mctl_ctl->dramtmg1); + reg_val = (tcwl << 24) | (tcl << 16) | (trd2wr << 8) | (twr2rd << 0); + writel(reg_val, &mctl_ctl->dramtmg2); + reg_val = (tmrw << 16) | (tmrd << 12) | (tmod << 0); + writel(reg_val, &mctl_ctl->dramtmg3); + reg_val = (trcd << 24) | (tccd << 16) | (trrd << 8) | (trp << 0); + writel(reg_val, &mctl_ctl->dramtmg4); + reg_val = (tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | (tcke << 0); + writel(reg_val, &mctl_ctl->dramtmg5); + /* Set two rank timing and exit self-refresh timing */ + reg_val = readl(&mctl_ctl->dramtmg8); + reg_val &= ~(0xff << 8); + reg_val &= ~(0xff << 0); + reg_val |= (0x33 << 8); + reg_val |= (0x8 << 0); + writel(reg_val, &mctl_ctl->dramtmg8); + /* Set phy interface time */ + reg_val = (0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) + | (wr_latency << 0); + /* PHY interface write latency and read latency configure */ + writel(reg_val, &mctl_ctl->pitmg0); + /* Set phy time PTR0-2 use default */ + writel(((tdinit0 << 0) | (tdinit1 << 20)), &mctl_ctl->ptr3); + writel(((tdinit2 << 0) | (tdinit3 << 20)), &mctl_ctl->ptr4); + /* Set refresh timing */ + reg_val = (trefi << 16) | (trfc << 0); + writel(reg_val, &mctl_ctl->rfshtmg); +} + +static void mctl_set_pir(u32 val) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + writel(val, &mctl_ctl->pir); + mctl_await_completion(&mctl_ctl->pgsr0, 0x1, 0x1); +} + +static void mctl_data_train_cfg(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + if (para->rank == 2) + clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x3 << 24); + else + clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x1 << 24); +} + +static int mctl_train_dram(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + mctl_data_train_cfg(para); + mctl_set_pir(0x5f3); + + return ((readl(&mctl_ctl->pgsr0) >> 20) & 0xff) ? -EIO : 0; +} + +static void set_master_priority(void) +{ + writel(0x00a0000d, MCTL_MASTER_CFG0(0)); + writel(0x00500064, MCTL_MASTER_CFG1(0)); + writel(0x07000009, MCTL_MASTER_CFG0(1)); + writel(0x00000600, MCTL_MASTER_CFG1(1)); + writel(0x01000009, MCTL_MASTER_CFG0(3)); + writel(0x00000064, MCTL_MASTER_CFG1(3)); + writel(0x08000009, MCTL_MASTER_CFG0(4)); + writel(0x00000640, MCTL_MASTER_CFG1(4)); + writel(0x20000308, MCTL_MASTER_CFG0(8)); + writel(0x00001000, MCTL_MASTER_CFG1(8)); + writel(0x02800009, MCTL_MASTER_CFG0(9)); + writel(0x00000100, MCTL_MASTER_CFG1(9)); + writel(0x01800009, MCTL_MASTER_CFG0(5)); + writel(0x00000100, MCTL_MASTER_CFG1(5)); + writel(0x01800009, MCTL_MASTER_CFG0(7)); + writel(0x00000100, MCTL_MASTER_CFG1(7)); + writel(0x00640009, MCTL_MASTER_CFG0(6)); + writel(0x00000032, MCTL_MASTER_CFG1(6)); + writel(0x0100000d, MCTL_MASTER_CFG0(2)); + writel(0x00500080, MCTL_MASTER_CFG1(2)); +} + +static int mctl_channel_init(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + u32 low_data_lines_status; /* Training status of datalines 0 - 7 */ + u32 high_data_lines_status; /* Training status of datalines 8 - 15 */ + u32 i, rval; + + auto_set_timing_para(para); + + /* Set dram master access priority */ + writel(0x000101a0, &mctl_com->bwcr); + /* set cpu high priority */ + writel(0x1, &mctl_com->mapr); + set_master_priority(); + udelay(250); + + /* Disable dram VTC */ + clrbits_le32(&mctl_ctl->pgcr0, 0x3f << 0 | 0x1 << 30); + clrsetbits_le32(&mctl_ctl->pgcr1, 0x1 << 24, 0x1 << 26); + + writel(0x94be6fa3, MCTL_PROTECT); + udelay(100); + clrsetbits_le32(MX_UPD2, 0xfff << 16, 0x50 << 16); + writel(0x0, MCTL_PROTECT); + udelay(100); + + + /* Set ODT */ + if (IS_ENABLED(CONFIG_DRAM_ODT_EN)) + rval = 0x0; + else + rval = 0x2; + + for (i = 0 ; i < 11 ; i++) { + clrsetbits_le32(DATX0IOCR(i), (0x3 << 24) | (0x3 << 16), + rval << 24); + clrsetbits_le32(DATX1IOCR(i), (0x3 << 24) | (0x3 << 16), + rval << 24); + clrsetbits_le32(DATX2IOCR(i), (0x3 << 24) | (0x3 << 16), + rval << 24); + clrsetbits_le32(DATX3IOCR(i), (0x3 << 24) | (0x3 << 16), + rval << 24); + } + + for (i = 0; i < 31; i++) + clrsetbits_le32(CAIOCR(i), 0x3 << 26 | 0x3 << 16, 0x2 << 26); + + /* set PLL configuration */ + if (CONFIG_DRAM_CLK >= 480) + setbits_le32(&mctl_ctl->pllgcr, 0x1 << 19); + else + setbits_le32(&mctl_ctl->pllgcr, 0x3 << 19); + + /* Auto detect dram config, set 2 rank and 16bit bus-width */ + para->cs1 = 0; + para->rank = 2; + para->bus_width = 16; + mctl_set_cr(para); + + /* Open DQS gating */ + clrbits_le32(&mctl_ctl->pgcr2, (0x3 << 6)); + clrbits_le32(&mctl_ctl->dqsgmr, (0x1 << 8) | (0x7)); + + if (para->dram_type == DRAM_TYPE_LPDDR3) + clrsetbits_le32(&mctl_ctl->dxccr, (0x1 << 27) | (0x3<<6) , + 0x1 << 31); + if (readl(&mctl_com->cr) & 0x1) + writel(0x00000303, &mctl_ctl->odtmap); + else + writel(0x00000201, &mctl_ctl->odtmap); + + mctl_data_train_cfg(para); + /* ZQ calibration */ + clrsetbits_le32(ZQnPR(0), 0x000000ff, CONFIG_DRAM_ZQ & 0xff); + clrsetbits_le32(ZQnPR(1), 0x000000ff, (CONFIG_DRAM_ZQ >> 8) & 0xff); + /* CA calibration */ + + if (para->dram_type == DRAM_TYPE_DDR3) + mctl_set_pir(0x0201f3 | 0x1<<10); + else + mctl_set_pir(0x020173 | 0x1<<10); + + /* DQS gate training */ + if (mctl_train_dram(para) != 0) { + low_data_lines_status = (readl(DXnGSR0(0)) >> 24) & 0x03; + high_data_lines_status = (readl(DXnGSR0(1)) >> 24) & 0x03; + + if (low_data_lines_status == 0x3) + return -EIO; + + /* DRAM has only one rank */ + para->rank = 1; + mctl_set_cr(para); + + if (low_data_lines_status == high_data_lines_status) + goto done; /* 16 bit bus, 1 rank */ + + if (!(low_data_lines_status & high_data_lines_status)) { + /* Retry 16 bit bus-width with CS1 set */ + para->cs1 = 1; + mctl_set_cr(para); + if (mctl_train_dram(para) == 0) + goto done; + } + + /* Try 8 bit bus-width */ + writel(0x0, DXnGCR0(1)); /* Disable high DQ */ + para->cs1 = 0; + para->bus_width = 8; + mctl_set_cr(para); + if (mctl_train_dram(para) != 0) + return -EIO; + } +done: + /* Check the dramc status */ + mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1); + + /* Close DQS gating */ + setbits_le32(&mctl_ctl->pgcr2, 0x3 << 6); + + /* set PGCR3,CKE polarity */ + writel(0x00aa0060, &mctl_ctl->pgcr3); + /* Enable master access */ + writel(0xffffffff, &mctl_com->maer); + + return 0; +} + +static void mctl_sys_init(struct dram_para *para) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + clrbits_le32(&ccm->mbus_clk_cfg, MBUS_CLK_GATE); + clrbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); + clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); + clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + clrbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_EN); + udelay(1000); + clrbits_le32(&ccm->dram_clk_cfg, 0x01<<31); + + clock_set_pll5(CONFIG_DRAM_CLK * 1000000 * DRAM_CLK_MUL); + + clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV_MASK, + CCM_DRAMCLK_CFG_DIV(DRAM_CLK_DIV) | + CCM_DRAMCLK_CFG_RST | CCM_DRAMCLK_CFG_UPD); + mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0); + + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); + setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); + setbits_le32(&ccm->mbus_clk_cfg, MBUS_CLK_GATE); + + para->rank = 2; + para->bus_width = 16; + mctl_set_cr(para); + + /* Set dram master access priority */ + writel(0x0000e00f, &mctl_ctl->clken); /* normal */ + + udelay(250); +} + +unsigned long sunxi_dram_init(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + struct dram_para para = { + .cs1 = 0, + .bank = 1, + .rank = 1, + .rows = 15, + .bus_width = 16, + .page_size = 2048, + }; + +#if defined(CONFIG_MACH_SUN8I_A83T) +#if (CONFIG_DRAM_TYPE == 3) || (CONFIG_DRAM_TYPE == 7) + para.dram_type = CONFIG_DRAM_TYPE; +#else +#error Unsupported DRAM type, Please set DRAM type (3:DDR3, 7:LPDDR3) +#endif +#endif + setbits_le32(SUNXI_PRCM_BASE + 0x1e0, 0x1 << 8); + + writel(0, (SUNXI_PRCM_BASE + 0x1e8)); + udelay(10); + + mctl_sys_init(¶); + + if (mctl_channel_init(¶) != 0) + return 0; + + auto_detect_dram_size(¶); + + /* Enable master software clk */ + writel(readl(&mctl_com->swonr) | 0x3ffff, &mctl_com->swonr); + + /* Set DRAM ODT MAP */ + if (para.rank == 2) + writel(0x00000303, &mctl_ctl->odtmap); + else + writel(0x00000201, &mctl_ctl->odtmap); + + return para.page_size * (para.bus_width / 8) * + (1 << (para.bank + para.rank + para.rows)); +} diff --git a/arch/arm/mach-sunxi/dram_sun8i_h3.c b/arch/arm/mach-sunxi/dram_sun8i_h3.c new file mode 100644 index 0000000..2020d75 --- /dev/null +++ b/arch/arm/mach-sunxi/dram_sun8i_h3.c @@ -0,0 +1,469 @@ +/* + * sun8i H3 platform dram controller init + * + * (C) Copyright 2007-2015 Allwinner Technology Co. + * Jerry Wang <wangflord@allwinnertech.com> + * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com> + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * (C) Copyright 2015 Jens Kuske <jenskuske@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/dram.h> +#include <linux/kconfig.h> + +struct dram_para { + u32 read_delays; + u32 write_delays; + u16 page_size; + u8 bus_width; + u8 dual_rank; + u8 row_bits; +}; + +static inline int ns_to_t(int nanoseconds) +{ + const unsigned int ctrl_freq = CONFIG_DRAM_CLK / 2; + + return DIV_ROUND_UP(ctrl_freq * nanoseconds, 1000); +} + +static u32 bin_to_mgray(int val) +{ + static const u8 lookup_table[32] = { + 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05, + 0x0c, 0x0d, 0x0e, 0x0f, 0x0a, 0x0b, 0x08, 0x09, + 0x18, 0x19, 0x1a, 0x1b, 0x1e, 0x1f, 0x1c, 0x1d, + 0x14, 0x15, 0x16, 0x17, 0x12, 0x13, 0x10, 0x11, + }; + + return lookup_table[clamp(val, 0, 31)]; +} + +static int mgray_to_bin(u32 val) +{ + static const u8 lookup_table[32] = { + 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05, + 0x0e, 0x0f, 0x0c, 0x0d, 0x08, 0x09, 0x0a, 0x0b, + 0x1e, 0x1f, 0x1c, 0x1d, 0x18, 0x19, 0x1a, 0x1b, + 0x10, 0x11, 0x12, 0x13, 0x16, 0x17, 0x14, 0x15, + }; + + return lookup_table[val & 0x1f]; +} + +static void mctl_phy_init(u32 val) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + writel(val | PIR_INIT, &mctl_ctl->pir); + mctl_await_completion(&mctl_ctl->pgsr[0], PGSR_INIT_DONE, 0x1); +} + +static void mctl_dq_delay(u32 read, u32 write) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + int i, j; + u32 val; + + for (i = 0; i < 4; i++) { + val = DATX_IOCR_WRITE_DELAY((write >> (i * 4)) & 0xf) | + DATX_IOCR_READ_DELAY(((read >> (i * 4)) & 0xf) * 2); + + for (j = DATX_IOCR_DQ(0); j <= DATX_IOCR_DM; j++) + writel(val, &mctl_ctl->datx[i].iocr[j]); + } + + clrbits_le32(&mctl_ctl->pgcr[0], 1 << 26); + + for (i = 0; i < 4; i++) { + val = DATX_IOCR_WRITE_DELAY((write >> (16 + i * 4)) & 0xf) | + DATX_IOCR_READ_DELAY((read >> (16 + i * 4)) & 0xf); + + writel(val, &mctl_ctl->datx[i].iocr[DATX_IOCR_DQS]); + writel(val, &mctl_ctl->datx[i].iocr[DATX_IOCR_DQSN]); + } + + setbits_le32(&mctl_ctl->pgcr[0], 1 << 26); + + udelay(1); +} + +static void mctl_set_master_priority(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + + /* enable bandwidth limit windows and set windows size 1us */ + writel(0x00010190, &mctl_com->bwcr); + + /* set cpu high priority */ + writel(0x00000001, &mctl_com->mapr); + + writel(0x0200000d, &mctl_com->mcr[0][0]); + writel(0x00800100, &mctl_com->mcr[0][1]); + writel(0x06000009, &mctl_com->mcr[1][0]); + writel(0x01000400, &mctl_com->mcr[1][1]); + writel(0x0200000d, &mctl_com->mcr[2][0]); + writel(0x00600100, &mctl_com->mcr[2][1]); + writel(0x0100000d, &mctl_com->mcr[3][0]); + writel(0x00200080, &mctl_com->mcr[3][1]); + writel(0x07000009, &mctl_com->mcr[4][0]); + writel(0x01000640, &mctl_com->mcr[4][1]); + writel(0x0100000d, &mctl_com->mcr[5][0]); + writel(0x00200080, &mctl_com->mcr[5][1]); + writel(0x01000009, &mctl_com->mcr[6][0]); + writel(0x00400080, &mctl_com->mcr[6][1]); + writel(0x0100000d, &mctl_com->mcr[7][0]); + writel(0x00400080, &mctl_com->mcr[7][1]); + writel(0x0100000d, &mctl_com->mcr[8][0]); + writel(0x00400080, &mctl_com->mcr[8][1]); + writel(0x04000009, &mctl_com->mcr[9][0]); + writel(0x00400100, &mctl_com->mcr[9][1]); + writel(0x2000030d, &mctl_com->mcr[10][0]); + writel(0x04001800, &mctl_com->mcr[10][1]); + writel(0x04000009, &mctl_com->mcr[11][0]); + writel(0x00400120, &mctl_com->mcr[11][1]); +} + +static void mctl_set_timing_params(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + u8 tccd = 2; + u8 tfaw = ns_to_t(50); + u8 trrd = max(ns_to_t(10), 4); + u8 trcd = ns_to_t(15); + u8 trc = ns_to_t(53); + u8 txp = max(ns_to_t(8), 3); + u8 twtr = max(ns_to_t(8), 4); + u8 trtp = max(ns_to_t(8), 4); + u8 twr = max(ns_to_t(15), 3); + u8 trp = ns_to_t(15); + u8 tras = ns_to_t(38); + u16 trefi = ns_to_t(7800) / 32; + u16 trfc = ns_to_t(350); + + u8 tmrw = 0; + u8 tmrd = 4; + u8 tmod = 12; + u8 tcke = 3; + u8 tcksrx = 5; + u8 tcksre = 5; + u8 tckesr = 4; + u8 trasmax = 24; + + u8 tcl = 6; /* CL 12 */ + u8 tcwl = 4; /* CWL 8 */ + u8 t_rdata_en = 4; + u8 wr_latency = 2; + + u32 tdinit0 = (500 * CONFIG_DRAM_CLK) + 1; /* 500us */ + u32 tdinit1 = (360 * CONFIG_DRAM_CLK) / 1000 + 1; /* 360ns */ + u32 tdinit2 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */ + u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */ + + u8 twtp = tcwl + 2 + twr; /* WL + BL / 2 + tWR */ + u8 twr2rd = tcwl + 2 + twtr; /* WL + BL / 2 + tWTR */ + u8 trd2wr = tcl + 2 + 1 - tcwl; /* RL + BL / 2 + 2 - WL */ + + /* set mode register */ + writel(0x1c70, &mctl_ctl->mr[0]); /* CL=11, WR=12 */ + writel(0x40, &mctl_ctl->mr[1]); + writel(0x18, &mctl_ctl->mr[2]); /* CWL=8 */ + writel(0x0, &mctl_ctl->mr[3]); + + /* set DRAM timing */ + writel(DRAMTMG0_TWTP(twtp) | DRAMTMG0_TFAW(tfaw) | + DRAMTMG0_TRAS_MAX(trasmax) | DRAMTMG0_TRAS(tras), + &mctl_ctl->dramtmg[0]); + writel(DRAMTMG1_TXP(txp) | DRAMTMG1_TRTP(trtp) | DRAMTMG1_TRC(trc), + &mctl_ctl->dramtmg[1]); + writel(DRAMTMG2_TCWL(tcwl) | DRAMTMG2_TCL(tcl) | + DRAMTMG2_TRD2WR(trd2wr) | DRAMTMG2_TWR2RD(twr2rd), + &mctl_ctl->dramtmg[2]); + writel(DRAMTMG3_TMRW(tmrw) | DRAMTMG3_TMRD(tmrd) | DRAMTMG3_TMOD(tmod), + &mctl_ctl->dramtmg[3]); + writel(DRAMTMG4_TRCD(trcd) | DRAMTMG4_TCCD(tccd) | DRAMTMG4_TRRD(trrd) | + DRAMTMG4_TRP(trp), &mctl_ctl->dramtmg[4]); + writel(DRAMTMG5_TCKSRX(tcksrx) | DRAMTMG5_TCKSRE(tcksre) | + DRAMTMG5_TCKESR(tckesr) | DRAMTMG5_TCKE(tcke), + &mctl_ctl->dramtmg[5]); + + /* set two rank timing */ + clrsetbits_le32(&mctl_ctl->dramtmg[8], (0xff << 8) | (0xff << 0), + (0x66 << 8) | (0x10 << 0)); + + /* set PHY interface timing, write latency and read latency configure */ + writel((0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) | + (wr_latency << 0), &mctl_ctl->pitmg[0]); + + /* set PHY timing, PTR0-2 use default */ + writel(PTR3_TDINIT0(tdinit0) | PTR3_TDINIT1(tdinit1), &mctl_ctl->ptr[3]); + writel(PTR4_TDINIT2(tdinit2) | PTR4_TDINIT3(tdinit3), &mctl_ctl->ptr[4]); + + /* set refresh timing */ + writel(RFSHTMG_TREFI(trefi) | RFSHTMG_TRFC(trfc), &mctl_ctl->rfshtmg); +} + +static void mctl_zq_calibration(struct dram_para *para) +{ + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + int i; + u16 zq_val[6]; + u8 val; + + writel(0x0a0a0a0a, &mctl_ctl->zqdr[2]); + + for (i = 0; i < 6; i++) { + u8 zq = (CONFIG_DRAM_ZQ >> (i * 4)) & 0xf; + + writel((zq << 20) | (zq << 16) | (zq << 12) | + (zq << 8) | (zq << 4) | (zq << 0), + &mctl_ctl->zqcr); + + writel(PIR_CLRSR, &mctl_ctl->pir); + mctl_phy_init(PIR_ZCAL); + + zq_val[i] = readl(&mctl_ctl->zqdr[0]) & 0xff; + writel(REPEAT_BYTE(zq_val[i]), &mctl_ctl->zqdr[2]); + + writel(PIR_CLRSR, &mctl_ctl->pir); + mctl_phy_init(PIR_ZCAL); + + val = readl(&mctl_ctl->zqdr[0]) >> 24; + zq_val[i] |= bin_to_mgray(mgray_to_bin(val) - 1) << 8; + } + + writel((zq_val[1] << 16) | zq_val[0], &mctl_ctl->zqdr[0]); + writel((zq_val[3] << 16) | zq_val[2], &mctl_ctl->zqdr[1]); + writel((zq_val[5] << 16) | zq_val[4], &mctl_ctl->zqdr[2]); +} + +static void mctl_set_cr(struct dram_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + + writel(MCTL_CR_BL8 | MCTL_CR_2T | MCTL_CR_DDR3 | MCTL_CR_INTERLEAVED | + MCTL_CR_EIGHT_BANKS | MCTL_CR_BUS_WIDTH(para->bus_width) | + (para->dual_rank ? MCTL_CR_DUAL_RANK : MCTL_CR_SINGLE_RANK) | + MCTL_CR_PAGE_SIZE(para->page_size) | + MCTL_CR_ROW_BITS(para->row_bits), &mctl_com->cr); +} + +static void mctl_sys_init(struct dram_para *para) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + clrbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE); + clrbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); + clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); + clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + clrbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_EN); + udelay(10); + + clrbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST); + udelay(1000); + + clock_set_pll5(CONFIG_DRAM_CLK * 2 * 1000000, false); + clrsetbits_le32(&ccm->dram_clk_cfg, + CCM_DRAMCLK_CFG_DIV_MASK | CCM_DRAMCLK_CFG_SRC_MASK, + CCM_DRAMCLK_CFG_DIV(1) | CCM_DRAMCLK_CFG_SRC_PLL5 | + CCM_DRAMCLK_CFG_UPD); + mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0); + + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL); + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL); + setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET); + setbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE); + + setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST); + udelay(10); + + writel(0xc00e, &mctl_ctl->clken); + udelay(500); +} + +static int mctl_channel_init(struct dram_para *para) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + unsigned int i; + + mctl_set_cr(para); + mctl_set_timing_params(para); + mctl_set_master_priority(); + + /* setting VTC, default disable all VT */ + clrbits_le32(&mctl_ctl->pgcr[0], (1 << 30) | 0x3f); + clrsetbits_le32(&mctl_ctl->pgcr[1], 1 << 24, 1 << 26); + + /* increase DFI_PHY_UPD clock */ + writel(PROTECT_MAGIC, &mctl_com->protect); + udelay(100); + clrsetbits_le32(&mctl_ctl->upd2, 0xfff << 16, 0x50 << 16); + writel(0x0, &mctl_com->protect); + udelay(100); + + /* set dramc odt */ + for (i = 0; i < 4; i++) + clrsetbits_le32(&mctl_ctl->datx[i].gcr, (0x3 << 4) | + (0x1 << 1) | (0x3 << 2) | (0x3 << 12) | + (0x3 << 14), + IS_ENABLED(CONFIG_DRAM_ODT_EN) ? 0x0 : 0x2); + + /* AC PDR should always ON */ + setbits_le32(&mctl_ctl->aciocr, 0x1 << 1); + + /* set DQS auto gating PD mode */ + setbits_le32(&mctl_ctl->pgcr[2], 0x3 << 6); + + /* dx ddr_clk & hdr_clk dynamic mode */ + clrbits_le32(&mctl_ctl->pgcr[0], (0x3 << 14) | (0x3 << 12)); + + /* dphy & aphy phase select 270 degree */ + clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8), + (0x1 << 10) | (0x2 << 8)); + + /* set half DQ */ + if (para->bus_width != 32) { + writel(0x0, &mctl_ctl->datx[2].gcr); + writel(0x0, &mctl_ctl->datx[3].gcr); + } + + /* data training configuration */ + clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24, + (para->dual_rank ? 0x3 : 0x1) << 24); + + + if (para->read_delays || para->write_delays) { + mctl_dq_delay(para->read_delays, para->write_delays); + udelay(50); + } + + mctl_zq_calibration(para); + + mctl_phy_init(PIR_PLLINIT | PIR_DCAL | PIR_PHYRST | PIR_DRAMRST | + PIR_DRAMINIT | PIR_QSGATE); + + /* detect ranks and bus width */ + if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20)) { + /* only one rank */ + if (((readl(&mctl_ctl->datx[0].gsr[0]) >> 24) & 0x2) || + ((readl(&mctl_ctl->datx[1].gsr[0]) >> 24) & 0x2)) { + clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24, 0x1 << 24); + para->dual_rank = 0; + } + + /* only half DQ width */ + if (((readl(&mctl_ctl->datx[2].gsr[0]) >> 24) & 0x1) || + ((readl(&mctl_ctl->datx[3].gsr[0]) >> 24) & 0x1)) { + writel(0x0, &mctl_ctl->datx[2].gcr); + writel(0x0, &mctl_ctl->datx[3].gcr); + para->bus_width = 16; + } + + mctl_set_cr(para); + udelay(20); + + /* re-train */ + mctl_phy_init(PIR_QSGATE); + if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20)) + return 1; + } + + /* check the dramc status */ + mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1); + + /* liuke added for refresh debug */ + setbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31); + udelay(10); + clrbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31); + udelay(10); + + /* set PGCR3, CKE polarity */ + writel(0x00aa0060, &mctl_ctl->pgcr[3]); + + /* power down zq calibration module for power save */ + setbits_le32(&mctl_ctl->zqcr, ZQCR_PWRDOWN); + + /* enable master access */ + writel(0xffffffff, &mctl_com->maer); + + return 0; +} + +static void mctl_auto_detect_dram_size(struct dram_para *para) +{ + /* detect row address bits */ + para->page_size = 512; + para->row_bits = 16; + mctl_set_cr(para); + + for (para->row_bits = 11; para->row_bits < 16; para->row_bits++) + if (mctl_mem_matches((1 << (para->row_bits + 3)) * para->page_size)) + break; + + /* detect page size */ + para->page_size = 8192; + mctl_set_cr(para); + + for (para->page_size = 512; para->page_size < 8192; para->page_size *= 2) + if (mctl_mem_matches(para->page_size)) + break; +} + +unsigned long sunxi_dram_init(void) +{ + struct sunxi_mctl_com_reg * const mctl_com = + (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; + struct sunxi_mctl_ctl_reg * const mctl_ctl = + (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; + + struct dram_para para = { + .read_delays = 0x00007979, /* dram_tpr12 */ + .write_delays = 0x6aaa0000, /* dram_tpr11 */ + .dual_rank = 0, + .bus_width = 32, + .row_bits = 15, + .page_size = 4096, + }; + + mctl_sys_init(¶); + if (mctl_channel_init(¶)) + return 0; + + if (para.dual_rank) + writel(0x00000303, &mctl_ctl->odtmap); + else + writel(0x00000201, &mctl_ctl->odtmap); + udelay(1); + + /* odt delay */ + writel(0x0c000400, &mctl_ctl->odtcfg); + + /* clear credit value */ + setbits_le32(&mctl_com->cccr, 1 << 31); + udelay(10); + + mctl_auto_detect_dram_size(¶); + mctl_set_cr(¶); + + return (1 << (para.row_bits + 3)) * para.page_size * + (para.dual_rank ? 2 : 1); +} diff --git a/arch/arm/mach-sunxi/p2wi.c b/arch/arm/mach-sunxi/p2wi.c new file mode 100644 index 0000000..26a9cfc --- /dev/null +++ b/arch/arm/mach-sunxi/p2wi.c @@ -0,0 +1,117 @@ +/* + * Sunxi A31 Power Management Unit + * + * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> + * http://linux-sunxi.org + * + * Based on sun6i sources and earlier U-Boot Allwiner A10 SPL work + * + * (C) Copyright 2006-2013 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing <bergxing@allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/gpio.h> +#include <asm/arch/p2wi.h> +#include <asm/arch/prcm.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> + +void p2wi_init(void) +{ + struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE; + + /* Enable p2wi and PIO clk, and de-assert their resets */ + prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_P2WI); + + sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN6I_GPL0_R_P2WI_SCK); + sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN6I_GPL1_R_P2WI_SDA); + + /* Reset p2wi controller and set clock to CLKIN(12)/8 = 1.5 MHz */ + writel(P2WI_CTRL_RESET, &p2wi->ctrl); + sdelay(0x100); + writel(P2WI_CC_SDA_OUT_DELAY(1) | P2WI_CC_CLK_DIV(8), + &p2wi->cc); +} + +int p2wi_change_to_p2wi_mode(u8 slave_addr, u8 ctrl_reg, u8 init_data) +{ + struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE; + unsigned long tmo = timer_get_us() + 1000000; + + writel(P2WI_PM_DEV_ADDR(slave_addr) | + P2WI_PM_CTRL_ADDR(ctrl_reg) | + P2WI_PM_INIT_DATA(init_data) | + P2WI_PM_INIT_SEND, + &p2wi->pm); + + while ((readl(&p2wi->pm) & P2WI_PM_INIT_SEND)) { + if (timer_get_us() > tmo) + return -ETIME; + } + + return 0; +} + +static int p2wi_await_trans(void) +{ + struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE; + unsigned long tmo = timer_get_us() + 1000000; + int ret; + u8 reg; + + while (1) { + reg = readl(&p2wi->status); + if (reg & P2WI_STAT_TRANS_ERR) { + ret = -EIO; + break; + } + if (reg & P2WI_STAT_TRANS_DONE) { + ret = 0; + break; + } + if (timer_get_us() > tmo) { + ret = -ETIME; + break; + } + } + writel(reg, &p2wi->status); /* Clear status bits */ + return ret; +} + +int p2wi_read(const u8 addr, u8 *data) +{ + struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE; + int ret; + + writel(P2WI_DATADDR_BYTE_1(addr), &p2wi->dataddr0); + writel(P2WI_DATA_NUM_BYTES(1) | + P2WI_DATA_NUM_BYTES_READ, &p2wi->numbytes); + writel(P2WI_STAT_TRANS_DONE, &p2wi->status); + writel(P2WI_CTRL_TRANS_START, &p2wi->ctrl); + + ret = p2wi_await_trans(); + + *data = readl(&p2wi->data0) & P2WI_DATA_BYTE_1_MASK; + return ret; +} + +int p2wi_write(const u8 addr, u8 data) +{ + struct sunxi_p2wi_reg *p2wi = (struct sunxi_p2wi_reg *)SUN6I_P2WI_BASE; + + writel(P2WI_DATADDR_BYTE_1(addr), &p2wi->dataddr0); + writel(P2WI_DATA_BYTE_1(data), &p2wi->data0); + writel(P2WI_DATA_NUM_BYTES(1), &p2wi->numbytes); + writel(P2WI_STAT_TRANS_DONE, &p2wi->status); + writel(P2WI_CTRL_TRANS_START, &p2wi->ctrl); + + return p2wi_await_trans(); +} diff --git a/arch/arm/mach-sunxi/pinmux.c b/arch/arm/mach-sunxi/pinmux.c new file mode 100644 index 0000000..b026f78 --- /dev/null +++ b/arch/arm/mach-sunxi/pinmux.c @@ -0,0 +1,71 @@ +/* + * (C) Copyright 2007-2011 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/gpio.h> + +void sunxi_gpio_set_cfgbank(struct sunxi_gpio *pio, int bank_offset, u32 val) +{ + u32 index = GPIO_CFG_INDEX(bank_offset); + u32 offset = GPIO_CFG_OFFSET(bank_offset); + + clrsetbits_le32(&pio->cfg[0] + index, 0xf << offset, val << offset); +} + +void sunxi_gpio_set_cfgpin(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + sunxi_gpio_set_cfgbank(pio, pin, val); +} + +int sunxi_gpio_get_cfgbank(struct sunxi_gpio *pio, int bank_offset) +{ + u32 index = GPIO_CFG_INDEX(bank_offset); + u32 offset = GPIO_CFG_OFFSET(bank_offset); + u32 cfg; + + cfg = readl(&pio->cfg[0] + index); + cfg >>= offset; + + return cfg & 0xf; +} + +int sunxi_gpio_get_cfgpin(u32 pin) +{ + u32 bank = GPIO_BANK(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + return sunxi_gpio_get_cfgbank(pio, pin); +} + +int sunxi_gpio_set_drv(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_DRV_INDEX(pin); + u32 offset = GPIO_DRV_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + clrsetbits_le32(&pio->drv[0] + index, 0x3 << offset, val << offset); + + return 0; +} + +int sunxi_gpio_set_pull(u32 pin, u32 val) +{ + u32 bank = GPIO_BANK(pin); + u32 index = GPIO_PULL_INDEX(pin); + u32 offset = GPIO_PULL_OFFSET(pin); + struct sunxi_gpio *pio = BANK_TO_GPIO(bank); + + clrsetbits_le32(&pio->pull[0] + index, 0x3 << offset, val << offset); + + return 0; +} diff --git a/arch/arm/mach-sunxi/pmic_bus.c b/arch/arm/mach-sunxi/pmic_bus.c new file mode 100644 index 0000000..5b81a8d --- /dev/null +++ b/arch/arm/mach-sunxi/pmic_bus.c @@ -0,0 +1,113 @@ +/* + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * Sunxi PMIC bus access helpers + * + * The axp152 & axp209 use an i2c bus, the axp221 uses the p2wi bus and the + * axp223 uses the rsb bus, these functions abstract this. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/p2wi.h> +#include <asm/arch/rsb.h> +#include <i2c.h> +#include <asm/arch/pmic_bus.h> + +#define AXP152_I2C_ADDR 0x30 + +#define AXP209_I2C_ADDR 0x34 + +#define AXP221_CHIP_ADDR 0x68 +#define AXP221_CTRL_ADDR 0x3e +#define AXP221_INIT_DATA 0x3e + +/* AXP818 device and runtime addresses are same as AXP223 */ +#define AXP223_DEVICE_ADDR 0x3a3 +#define AXP223_RUNTIME_ADDR 0x2d + +int pmic_bus_init(void) +{ + /* This cannot be 0 because it is used in SPL before BSS is ready */ + static int needs_init = 1; + __maybe_unused int ret; + + if (!needs_init) + return 0; + +#if defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER +# ifdef CONFIG_MACH_SUN6I + p2wi_init(); + ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, + AXP221_INIT_DATA); +# else + ret = rsb_init(); + if (ret) + return ret; + + ret = rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR); +# endif + if (ret) + return ret; +#endif + + needs_init = 0; + return 0; +} + +int pmic_bus_read(u8 reg, u8 *data) +{ +#ifdef CONFIG_AXP152_POWER + return i2c_read(AXP152_I2C_ADDR, reg, 1, data, 1); +#elif defined CONFIG_AXP209_POWER + return i2c_read(AXP209_I2C_ADDR, reg, 1, data, 1); +#elif defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER +# ifdef CONFIG_MACH_SUN6I + return p2wi_read(reg, data); +# else + return rsb_read(AXP223_RUNTIME_ADDR, reg, data); +# endif +#endif +} + +int pmic_bus_write(u8 reg, u8 data) +{ +#ifdef CONFIG_AXP152_POWER + return i2c_write(AXP152_I2C_ADDR, reg, 1, &data, 1); +#elif defined CONFIG_AXP209_POWER + return i2c_write(AXP209_I2C_ADDR, reg, 1, &data, 1); +#elif defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER +# ifdef CONFIG_MACH_SUN6I + return p2wi_write(reg, data); +# else + return rsb_write(AXP223_RUNTIME_ADDR, reg, data); +# endif +#endif +} + +int pmic_bus_setbits(u8 reg, u8 bits) +{ + int ret; + u8 val; + + ret = pmic_bus_read(reg, &val); + if (ret) + return ret; + + val |= bits; + return pmic_bus_write(reg, val); +} + +int pmic_bus_clrbits(u8 reg, u8 bits) +{ + int ret; + u8 val; + + ret = pmic_bus_read(reg, &val); + if (ret) + return ret; + + val &= ~bits; + return pmic_bus_write(reg, val); +} diff --git a/arch/arm/mach-sunxi/prcm.c b/arch/arm/mach-sunxi/prcm.c new file mode 100644 index 0000000..e1d091f --- /dev/null +++ b/arch/arm/mach-sunxi/prcm.c @@ -0,0 +1,47 @@ +/* + * Sunxi A31 Power Management Unit + * + * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> + * http://linux-sunxi.org + * + * Based on sun6i sources and earlier U-Boot Allwinner A10 SPL work + * + * (C) Copyright 2006-2013 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * Berg Xing <bergxing@allwinnertech.com> + * Tom Cubie <tangliang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +/* APB0 clock gate and reset bit offsets are the same. */ +void prcm_apb0_enable(u32 flags) +{ + struct sunxi_prcm_reg *prcm = + (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; + + /* open the clock for module */ + setbits_le32(&prcm->apb0_gate, flags); + + /* deassert reset for module */ + setbits_le32(&prcm->apb0_reset, flags); +} + +void prcm_apb0_disable(u32 flags) +{ + struct sunxi_prcm_reg *prcm = + (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; + + /* assert reset for module */ + clrbits_le32(&prcm->apb0_reset, flags); + + /* close the clock for module */ + clrbits_le32(&prcm->apb0_gate, flags); +} diff --git a/arch/arm/mach-sunxi/rsb.c b/arch/arm/mach-sunxi/rsb.c new file mode 100644 index 0000000..6fd11f1 --- /dev/null +++ b/arch/arm/mach-sunxi/rsb.c @@ -0,0 +1,175 @@ +/* + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> + * + * Based on allwinner u-boot sources rsb code which is: + * (C) Copyright 2007-2013 + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * lixiang <lixiang@allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/arch/cpu.h> +#include <asm/arch/gpio.h> +#include <asm/arch/prcm.h> +#include <asm/arch/rsb.h> + +static int rsb_set_device_mode(void); + +static void rsb_cfg_io(void) +{ +#ifdef CONFIG_MACH_SUN8I + sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL_R_RSB); + sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL_R_RSB); + sunxi_gpio_set_pull(SUNXI_GPL(0), 1); + sunxi_gpio_set_pull(SUNXI_GPL(1), 1); + sunxi_gpio_set_drv(SUNXI_GPL(0), 2); + sunxi_gpio_set_drv(SUNXI_GPL(1), 2); +#elif defined CONFIG_MACH_SUN9I + sunxi_gpio_set_cfgpin(SUNXI_GPN(0), SUN9I_GPN_R_RSB); + sunxi_gpio_set_cfgpin(SUNXI_GPN(1), SUN9I_GPN_R_RSB); + sunxi_gpio_set_pull(SUNXI_GPN(0), 1); + sunxi_gpio_set_pull(SUNXI_GPN(1), 1); + sunxi_gpio_set_drv(SUNXI_GPN(0), 2); + sunxi_gpio_set_drv(SUNXI_GPN(1), 2); +#else +#error unsupported MACH_SUNXI +#endif +} + +static void rsb_set_clk(void) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + u32 div = 0; + u32 cd_odly = 0; + + /* Source is Hosc24M, set RSB clk to 3Mhz */ + div = 24000000 / 3000000 / 2 - 1; + cd_odly = div >> 1; + if (!cd_odly) + cd_odly = 1; + + writel((cd_odly << 8) | div, &rsb->ccr); +} + +int rsb_init(void) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + + /* Enable RSB and PIO clk, and de-assert their resets */ + prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_RSB); + + /* Setup external pins */ + rsb_cfg_io(); + + writel(RSB_CTRL_SOFT_RST, &rsb->ctrl); + rsb_set_clk(); + + return rsb_set_device_mode(); +} + +static int rsb_await_trans(void) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + unsigned long tmo = timer_get_us() + 1000000; + u32 stat; + int ret; + + while (1) { + stat = readl(&rsb->stat); + if (stat & RSB_STAT_LBSY_INT) { + ret = -EBUSY; + break; + } + if (stat & RSB_STAT_TERR_INT) { + ret = -EIO; + break; + } + if (stat & RSB_STAT_TOVER_INT) { + ret = 0; + break; + } + if (timer_get_us() > tmo) { + ret = -ETIME; + break; + } + } + writel(stat, &rsb->stat); /* Clear status bits */ + + return ret; +} + +static int rsb_set_device_mode(void) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + unsigned long tmo = timer_get_us() + 1000000; + + writel(RSB_DMCR_DEVICE_MODE_START | RSB_DMCR_DEVICE_MODE_DATA, + &rsb->dmcr); + + while (readl(&rsb->dmcr) & RSB_DMCR_DEVICE_MODE_START) { + if (timer_get_us() > tmo) + return -ETIME; + } + + return rsb_await_trans(); +} + +static int rsb_do_trans(void) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + + setbits_le32(&rsb->ctrl, RSB_CTRL_START_TRANS); + return rsb_await_trans(); +} + +int rsb_set_device_address(u16 device_addr, u16 runtime_addr) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + + writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_addr) | + RSB_DEVADDR_DEVICE_ADDR(device_addr), &rsb->devaddr); + writel(RSB_CMD_SET_RTSADDR, &rsb->cmd); + + return rsb_do_trans(); +} + +int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + + writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_device_addr), &rsb->devaddr); + writel(reg_addr, &rsb->addr); + writel(data, &rsb->data); + writel(RSB_CMD_BYTE_WRITE, &rsb->cmd); + + return rsb_do_trans(); +} + +int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data) +{ + struct sunxi_rsb_reg * const rsb = + (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; + int ret; + + writel(RSB_DEVADDR_RUNTIME_ADDR(runtime_device_addr), &rsb->devaddr); + writel(reg_addr, &rsb->addr); + writel(RSB_CMD_BYTE_READ, &rsb->cmd); + + ret = rsb_do_trans(); + if (ret) + return ret; + + *data = readl(&rsb->data) & 0xff; + + return 0; +} diff --git a/arch/arm/mach-sunxi/usb_phy.c b/arch/arm/mach-sunxi/usb_phy.c new file mode 100644 index 0000000..fa375f1 --- /dev/null +++ b/arch/arm/mach-sunxi/usb_phy.c @@ -0,0 +1,400 @@ +/* + * Sunxi usb-phy code + * + * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com> + * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com> + * + * Based on code from + * Allwinner Technology Co., Ltd. <www.allwinnertech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/cpu.h> +#include <asm/arch/usb_phy.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <errno.h> + +#define SUNXI_USB_PMU_IRQ_ENABLE 0x800 +#ifdef CONFIG_MACH_SUN8I_A33 +#define SUNXI_USB_CSR 0x410 +#else +#define SUNXI_USB_CSR 0x404 +#endif +#define SUNXI_USB_PASSBY_EN 1 + +#define SUNXI_EHCI_AHB_ICHR8_EN (1 << 10) +#define SUNXI_EHCI_AHB_INCR4_BURST_EN (1 << 9) +#define SUNXI_EHCI_AHB_INCRX_ALIGN_EN (1 << 8) +#define SUNXI_EHCI_ULPI_BYPASS_EN (1 << 0) + +#define REG_PHY_UNK_H3 0x420 +#define REG_PMU_UNK_H3 0x810 + +/* A83T specific control bits for PHY0 */ +#define SUNXI_PHY_CTL_VBUSVLDEXT BIT(5) +#define SUNXI_PHY_CTL_SIDDQ BIT(3) + +/* A83T HSIC specific bits */ +#define SUNXI_EHCI_HS_FORCE BIT(20) +#define SUNXI_EHCI_CONNECT_DET BIT(17) +#define SUNXI_EHCI_CONNECT_INT BIT(16) +#define SUNXI_EHCI_HSIC BIT(1) + +static struct sunxi_usb_phy { + int usb_rst_mask; + int gpio_vbus; + int gpio_vbus_det; + int gpio_id_det; + int id; + int init_count; + int power_on_count; + int base; +} sunxi_usb_phy[] = { + { + .usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK, + .id = 0, + .base = SUNXI_USB0_BASE, + }, + { + .usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK, + .id = 1, + .base = SUNXI_USB1_BASE, + }, +#if CONFIG_SUNXI_USB_PHYS >= 3 + { +#ifdef CONFIG_MACH_SUN8I_A83T + .usb_rst_mask = CCM_USB_CTRL_HSIC_RST | CCM_USB_CTRL_HSIC_CLK | + CCM_USB_CTRL_12M_CLK, +#else + .usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK, +#endif + .id = 2, + .base = SUNXI_USB2_BASE, + }, +#endif +#if CONFIG_SUNXI_USB_PHYS >= 4 + { + .usb_rst_mask = CCM_USB_CTRL_PHY3_RST | CCM_USB_CTRL_PHY3_CLK, + .id = 3, + .base = SUNXI_USB3_BASE, + } +#endif +}; + +static int get_vbus_gpio(int index) +{ + switch (index) { + case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_PIN); + case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN); + case 2: return sunxi_name_to_gpio(CONFIG_USB2_VBUS_PIN); + case 3: return sunxi_name_to_gpio(CONFIG_USB3_VBUS_PIN); + } + return -EINVAL; +} + +static int get_vbus_detect_gpio(int index) +{ + switch (index) { + case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_DET); + } + return -EINVAL; +} + +static int get_id_detect_gpio(int index) +{ + switch (index) { + case 0: return sunxi_name_to_gpio(CONFIG_USB0_ID_DET); + } + return -EINVAL; +} + +__maybe_unused static void usb_phy_write(struct sunxi_usb_phy *phy, int addr, + int data, int len) +{ + int j = 0, usbc_bit = 0; + void *dest = (void *)SUNXI_USB0_BASE + SUNXI_USB_CSR; + +#ifdef CONFIG_MACH_SUN8I_A33 + /* CSR needs to be explicitly initialized to 0 on A33 */ + writel(0, dest); +#endif + + usbc_bit = 1 << (phy->id * 2); + for (j = 0; j < len; j++) { + /* set the bit address to be written */ + clrbits_le32(dest, 0xff << 8); + setbits_le32(dest, (addr + j) << 8); + + clrbits_le32(dest, usbc_bit); + /* set data bit */ + if (data & 0x1) + setbits_le32(dest, 1 << 7); + else + clrbits_le32(dest, 1 << 7); + + setbits_le32(dest, usbc_bit); + + clrbits_le32(dest, usbc_bit); + + data >>= 1; + } +} + +#if defined CONFIG_MACH_SUN8I_H3 +static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy) +{ + if (phy->id == 0) + clrbits_le32(SUNXI_USBPHY_BASE + REG_PHY_UNK_H3, 0x01); + + clrbits_le32(phy->base + REG_PMU_UNK_H3, 0x02); +} +#elif defined CONFIG_MACH_SUN8I_A83T +static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy) +{ +} +#else +static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy) +{ + /* The following comments are machine + * translated from Chinese, you have been warned! + */ + + /* Regulation 45 ohms */ + if (phy->id == 0) + usb_phy_write(phy, 0x0c, 0x01, 1); + + /* adjust PHY's magnitude and rate */ + usb_phy_write(phy, 0x20, 0x14, 5); + + /* threshold adjustment disconnect */ +#if defined CONFIG_MACH_SUN5I || defined CONFIG_MACH_SUN7I + usb_phy_write(phy, 0x2a, 2, 2); +#else + usb_phy_write(phy, 0x2a, 3, 2); +#endif + + return; +} +#endif + +static void sunxi_usb_phy_passby(struct sunxi_usb_phy *phy, int enable) +{ + unsigned long bits = 0; + void *addr; + + addr = (void *)phy->base + SUNXI_USB_PMU_IRQ_ENABLE; + + bits = SUNXI_EHCI_AHB_ICHR8_EN | + SUNXI_EHCI_AHB_INCR4_BURST_EN | + SUNXI_EHCI_AHB_INCRX_ALIGN_EN | + SUNXI_EHCI_ULPI_BYPASS_EN; + +#ifdef CONFIG_MACH_SUN8I_A83T + if (phy->id == 2) + bits |= SUNXI_EHCI_HS_FORCE | + SUNXI_EHCI_CONNECT_INT | + SUNXI_EHCI_HSIC; +#endif + + if (enable) + setbits_le32(addr, bits); + else + clrbits_le32(addr, bits); + + return; +} + +void sunxi_usb_phy_enable_squelch_detect(int index, int enable) +{ +#ifndef CONFIG_MACH_SUN8I_A83T + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + + usb_phy_write(phy, 0x3c, enable ? 0 : 2, 2); +#endif +} + +void sunxi_usb_phy_init(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + phy->init_count++; + if (phy->init_count != 1) + return; + + setbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); + + sunxi_usb_phy_config(phy); + + if (phy->id != 0) + sunxi_usb_phy_passby(phy, SUNXI_USB_PASSBY_EN); + +#ifdef CONFIG_MACH_SUN8I_A83T + if (phy->id == 0) { + setbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR, + SUNXI_PHY_CTL_VBUSVLDEXT); + clrbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR, + SUNXI_PHY_CTL_SIDDQ); + } +#endif +} + +void sunxi_usb_phy_exit(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + phy->init_count--; + if (phy->init_count != 0) + return; + + if (phy->id != 0) + sunxi_usb_phy_passby(phy, !SUNXI_USB_PASSBY_EN); + +#ifdef CONFIG_MACH_SUN8I_A83T + if (phy->id == 0) { + setbits_le32(SUNXI_USB0_BASE + SUNXI_USB_CSR, + SUNXI_PHY_CTL_SIDDQ); + } +#endif + + clrbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); +} + +void sunxi_usb_phy_power_on(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + + phy->power_on_count++; + if (phy->power_on_count != 1) + return; + + if (phy->gpio_vbus >= 0) + gpio_set_value(phy->gpio_vbus, 1); +} + +void sunxi_usb_phy_power_off(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + + phy->power_on_count--; + if (phy->power_on_count != 0) + return; + + if (phy->gpio_vbus >= 0) + gpio_set_value(phy->gpio_vbus, 0); +} + +int sunxi_usb_phy_power_is_on(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + + return phy->power_on_count > 0; +} + +int sunxi_usb_phy_vbus_detect(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + int err, retries = 3; + + if (phy->gpio_vbus_det < 0) + return phy->gpio_vbus_det; + + err = gpio_get_value(phy->gpio_vbus_det); + /* + * Vbus may have been provided by the board and just been turned of + * some milliseconds ago on reset, what we're measuring then is a + * residual charge on Vbus, sleep a bit and try again. + */ + while (err > 0 && retries--) { + mdelay(100); + err = gpio_get_value(phy->gpio_vbus_det); + } + + return err; +} + +int sunxi_usb_phy_id_detect(int index) +{ + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; + + if (phy->gpio_id_det < 0) + return phy->gpio_id_det; + + return gpio_get_value(phy->gpio_id_det); +} + +int sunxi_usb_phy_probe(void) +{ + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_usb_phy *phy; + int i, ret = 0; + + for (i = 0; i < CONFIG_SUNXI_USB_PHYS; i++) { + phy = &sunxi_usb_phy[i]; + + phy->gpio_vbus = get_vbus_gpio(i); + if (phy->gpio_vbus >= 0) { + ret = gpio_request(phy->gpio_vbus, "usb_vbus"); + if (ret) + return ret; + ret = gpio_direction_output(phy->gpio_vbus, 0); + if (ret) + return ret; + } + + phy->gpio_vbus_det = get_vbus_detect_gpio(i); + if (phy->gpio_vbus_det >= 0) { + ret = gpio_request(phy->gpio_vbus_det, "usb_vbus_det"); + if (ret) + return ret; + ret = gpio_direction_input(phy->gpio_vbus_det); + if (ret) + return ret; + } + + phy->gpio_id_det = get_id_detect_gpio(i); + if (phy->gpio_id_det >= 0) { + ret = gpio_request(phy->gpio_id_det, "usb_id_det"); + if (ret) + return ret; + ret = gpio_direction_input(phy->gpio_id_det); + if (ret) + return ret; + sunxi_gpio_set_pull(phy->gpio_id_det, + SUNXI_GPIO_PULL_UP); + } + } + + setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); + + return 0; +} + +int sunxi_usb_phy_remove(void) +{ + struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_usb_phy *phy; + int i; + + clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); + + for (i = 0; i < CONFIG_SUNXI_USB_PHYS; i++) { + phy = &sunxi_usb_phy[i]; + + if (phy->gpio_vbus >= 0) + gpio_free(phy->gpio_vbus); + + if (phy->gpio_vbus_det >= 0) + gpio_free(phy->gpio_vbus_det); + + if (phy->gpio_id_det >= 0) + gpio_free(phy->gpio_id_det); + } + + return 0; +} |