diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/clock-k2l.c | 138 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock-k2l.h | 89 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock.h | 4 |
4 files changed, 232 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/keystone/Makefile b/arch/arm/cpu/armv7/keystone/Makefile index 3d8fb70..4750371 100644 --- a/arch/arm/cpu/armv7/keystone/Makefile +++ b/arch/arm/cpu/armv7/keystone/Makefile @@ -10,6 +10,7 @@ obj-y += psc.o obj-y += clock.o obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o obj-$(CONFIG_SOC_K2E) += clock-k2e.o +obj-$(CONFIG_SOC_K2L) += clock-k2l.o obj-y += cmd_clock.o obj-y += cmd_mon.o obj-y += msmc.o diff --git a/arch/arm/cpu/armv7/keystone/clock-k2l.c b/arch/arm/cpu/armv7/keystone/clock-k2l.c new file mode 100644 index 0000000..1c5e4d5 --- /dev/null +++ b/arch/arm/cpu/armv7/keystone/clock-k2l.c @@ -0,0 +1,138 @@ +/* + * Keystone2: get clk rate for K2L + * + * (C) Copyright 2012-2014 + * Texas Instruments Incorporated, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/clock_defs.h> + +const struct keystone_pll_regs keystone_pll_regs[] = { + [CORE_PLL] = {KS2_MAINPLLCTL0, KS2_MAINPLLCTL1}, + [PASS_PLL] = {KS2_PASSPLLCTL0, KS2_PASSPLLCTL1}, + [TETRIS_PLL] = {KS2_ARMPLLCTL0, KS2_ARMPLLCTL1}, + [DDR3_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1}, +}; + +int dev_speeds[] = { + SPD800, + SPD1000, + SPD1200, + SPD800, + SPD800, + SPD800, + SPD800, + SPD800, + SPD1200, + SPD1000, + SPD800, + SPD800, + SPD800, +}; + +int arm_speeds[] = { + SPD800, + SPD1000, + SPD1200, + SPD1350, + SPD1400, + SPD800, + SPD1400, + SPD1350, + SPD1200, + SPD1000, + SPD800, + SPD800, + SPD800, +}; + +/** + * pll_freq_get - get pll frequency + * Fout = Fref * NF(mult) / NR(prediv) / OD + * @pll: pll identifier + */ +static unsigned long pll_freq_get(int pll) +{ + unsigned long mult = 1, prediv = 1, output_div = 2; + unsigned long ret; + u32 tmp, reg; + + if (pll == CORE_PLL) { + ret = external_clk[sys_clk]; + if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN) { + /* PLL mode */ + tmp = __raw_readl(KS2_MAINPLLCTL0); + prediv = (tmp & PLL_DIV_MASK) + 1; + mult = (((tmp & PLLM_MULT_HI_SMASK) >> 6) | + (pllctl_reg_read(pll, mult) & + PLLM_MULT_LO_MASK)) + 1; + output_div = ((pllctl_reg_read(pll, secctl) >> + PLL_CLKOD_SHIFT) & PLL_CLKOD_MASK) + 1; + + ret = ret / prediv / output_div * mult; + } + } else { + switch (pll) { + case PASS_PLL: + ret = external_clk[pa_clk]; + reg = KS2_PASSPLLCTL0; + break; + case TETRIS_PLL: + ret = external_clk[tetris_clk]; + reg = KS2_ARMPLLCTL0; + break; + case DDR3_PLL: + ret = external_clk[ddr3_clk]; + reg = KS2_DDR3APLLCTL0; + break; + default: + return 0; + } + + tmp = __raw_readl(reg); + if (!(tmp & PLLCTL_BYPASS)) { + /* Bypass disabled */ + prediv = (tmp & PLL_DIV_MASK) + 1; + mult = ((tmp >> PLL_MULT_SHIFT) & PLL_MULT_MASK) + 1; + output_div = ((tmp >> PLL_CLKOD_SHIFT) & + PLL_CLKOD_MASK) + 1; + ret = ((ret / prediv) * mult) / output_div; + } + } + + return ret; +} + +unsigned long clk_get_rate(unsigned int clk) +{ + switch (clk) { + case core_pll_clk: return pll_freq_get(CORE_PLL); + case pass_pll_clk: return pll_freq_get(PASS_PLL); + case tetris_pll_clk: return pll_freq_get(TETRIS_PLL); + case ddr3_pll_clk: return pll_freq_get(DDR3_PLL); + case sys_clk0_1_clk: + case sys_clk0_clk: return pll_freq_get(CORE_PLL) / pll0div_read(1); + case sys_clk1_clk: return pll_freq_get(CORE_PLL) / pll0div_read(2); + case sys_clk2_clk: return pll_freq_get(CORE_PLL) / pll0div_read(3); + case sys_clk3_clk: return pll_freq_get(CORE_PLL) / pll0div_read(4); + case sys_clk0_2_clk: return clk_get_rate(sys_clk0_clk) / 2; + case sys_clk0_3_clk: return clk_get_rate(sys_clk0_clk) / 3; + case sys_clk0_4_clk: return clk_get_rate(sys_clk0_clk) / 4; + case sys_clk0_6_clk: return clk_get_rate(sys_clk0_clk) / 6; + case sys_clk0_8_clk: return clk_get_rate(sys_clk0_clk) / 8; + case sys_clk0_12_clk: return clk_get_rate(sys_clk0_clk) / 12; + case sys_clk0_24_clk: return clk_get_rate(sys_clk0_clk) / 24; + case sys_clk1_3_clk: return clk_get_rate(sys_clk1_clk) / 3; + case sys_clk1_4_clk: return clk_get_rate(sys_clk1_clk) / 4; + case sys_clk1_6_clk: return clk_get_rate(sys_clk1_clk) / 6; + case sys_clk1_12_clk: return clk_get_rate(sys_clk1_clk) / 12; + default: + break; + } + + return 0; +} diff --git a/arch/arm/include/asm/arch-keystone/clock-k2l.h b/arch/arm/include/asm/arch-keystone/clock-k2l.h new file mode 100644 index 0000000..ad2e407 --- /dev/null +++ b/arch/arm/include/asm/arch-keystone/clock-k2l.h @@ -0,0 +1,89 @@ +/* + * K2L: Clock management APIs + * + * (C) Copyright 2012-2014 + * Texas Instruments Incorporated, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_ARCH_CLOCK_K2L_H +#define __ASM_ARCH_CLOCK_K2L_H + +enum ext_clk_e { + sys_clk, + alt_core_clk, + pa_clk, + tetris_clk, + ddr3_clk, + pcie_clk, + sgmii_clk, + usb_clk, + rp1_clk, + ext_clk_count /* number of external clocks */ +}; + +extern unsigned int external_clk[ext_clk_count]; + +#define CLK_LIST(CLK)\ + CLK(0, core_pll_clk)\ + CLK(1, pass_pll_clk)\ + CLK(2, tetris_pll_clk)\ + CLK(3, ddr3_pll_clk)\ + CLK(4, sys_clk0_clk)\ + CLK(5, sys_clk0_1_clk)\ + CLK(6, sys_clk0_2_clk)\ + CLK(7, sys_clk0_3_clk)\ + CLK(8, sys_clk0_4_clk)\ + CLK(9, sys_clk0_6_clk)\ + CLK(10, sys_clk0_8_clk)\ + CLK(11, sys_clk0_12_clk)\ + CLK(12, sys_clk0_24_clk)\ + CLK(13, sys_clk1_clk)\ + CLK(14, sys_clk1_3_clk)\ + CLK(15, sys_clk1_4_clk)\ + CLK(16, sys_clk1_6_clk)\ + CLK(17, sys_clk1_12_clk)\ + CLK(18, sys_clk2_clk)\ + CLK(19, sys_clk3_clk)\ + +#define PLLSET_CMD_LIST "<pa|arm|ddr3>" + +#define KS2_CLK1_6 sys_clk0_6_clk + +/* PLL identifiers */ +enum pll_type_e { + CORE_PLL, + PASS_PLL, + TETRIS_PLL, + DDR3_PLL, +}; + +enum { + SPD800, + SPD1000, + SPD1200, + SPD1350, + SPD1400, + SPD_RSV +}; + +#define CORE_PLL_799 {CORE_PLL, 13, 1, 2} +#define CORE_PLL_983 {CORE_PLL, 16, 1, 2} +#define CORE_PLL_1167 {CORE_PLL, 19, 1, 2} +#define CORE_PLL_1228 {CORE_PLL, 20, 1, 2} +#define PASS_PLL_1228 {PASS_PLL, 20, 1, 2} +#define PASS_PLL_983 {PASS_PLL, 16, 1, 2} +#define PASS_PLL_1050 {PASS_PLL, 205, 12, 2} +#define TETRIS_PLL_491 {TETRIS_PLL, 8, 1, 2} +#define TETRIS_PLL_737 {TETRIS_PLL, 12, 1, 2} +#define TETRIS_PLL_799 {TETRIS_PLL, 13, 1, 2} +#define TETRIS_PLL_983 {TETRIS_PLL, 16, 1, 2} +#define TETRIS_PLL_1167 {TETRIS_PLL, 19, 1, 2} +#define TETRIS_PLL_1228 {TETRIS_PLL, 20, 1, 2} +#define DDR3_PLL_200 {DDR3_PLL, 4, 1, 2} +#define DDR3_PLL_400 {DDR3_PLL, 16, 1, 4} +#define DDR3_PLL_800 {DDR3_PLL, 16, 1, 2} +#define DDR3_PLL_333 {DDR3_PLL, 20, 1, 6} + +#endif diff --git a/arch/arm/include/asm/arch-keystone/clock.h b/arch/arm/include/asm/arch-keystone/clock.h index c5efc69..7218230 100644 --- a/arch/arm/include/asm/arch-keystone/clock.h +++ b/arch/arm/include/asm/arch-keystone/clock.h @@ -20,6 +20,10 @@ #include <asm/arch/clock-k2e.h> #endif +#ifdef CONFIG_SOC_K2L +#include <asm/arch/clock-k2l.h> +#endif + #define MAIN_PLL CORE_PLL #include <asm/types.h> |