odroid: add board file for Odroid X2/U3 based on Samsung Exynos4412

This board file supports standard features of Odroid X2 and U3 boards:
- Exynos4412 core clock set to 1000MHz and MPLL peripherial clock set to 800MHz,
- MAX77686 power regulator,
- USB PHY,
- enable XCL205 - power for board peripherials
- check board type: U3 or X2.
- enable Odroid U3 FAN cooler

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 470 insertions, 0 deletions

diff --git a/board/samsung/odroid/odroid.c b/board/samsung/odroid/odroid.c
new file mode 100644
index 0000000..ac19527
--- /dev/null
+++ b/board/samsung/odroid/odroid.c
@@ -0,0 +1,470 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/power.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
+#include <asm/arch/cpu.h>
+#include <power/pmic.h>
+#include <power/max77686_pmic.h>
+#include <errno.h>
+#include <usb.h>
+#include <usb/s3c_udc.h>
+#include <samsung/misc.h>
+#include "setup.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_BOARD_TYPES
+/* Odroid board types */
+enum {
+	ODROID_TYPE_U3,
+	ODROID_TYPE_X2,
+	ODROID_TYPES,
+};
+
+void set_board_type(void)
+{
+	/* Set GPA1 pin 1 to HI - enable XCL205 output */
+	writel(XCL205_EN_GPIO_CON_CFG, XCL205_EN_GPIO_CON);
+	writel(XCL205_EN_GPIO_DAT_CFG, XCL205_EN_GPIO_CON + 0x4);
+	writel(XCL205_EN_GPIO_PUD_CFG, XCL205_EN_GPIO_CON + 0x8);
+	writel(XCL205_EN_GPIO_DRV_CFG, XCL205_EN_GPIO_CON + 0xc);
+
+	/* Set GPC1 pin 2 to IN - check XCL205 output state */
+	writel(XCL205_STATE_GPIO_CON_CFG, XCL205_STATE_GPIO_CON);
+	writel(XCL205_STATE_GPIO_PUD_CFG, XCL205_STATE_GPIO_CON + 0x8);
+
+	/* XCL205 - needs some latch time */
+	sdelay(200000);
+
+	/* Check GPC1 pin2 - LED supplied by XCL205 - X2 only */
+	if (readl(XCL205_STATE_GPIO_DAT) & (1 << XCL205_STATE_GPIO_PIN))
+		gd->board_type = ODROID_TYPE_X2;
+	else
+		gd->board_type = ODROID_TYPE_U3;
+}
+
+const char *get_board_type(void)
+{
+	const char *board_type[] = {"u3", "x2"};
+
+	return board_type[gd->board_type];
+}
+#endif
+
+#ifdef CONFIG_SET_DFU_ALT_INFO
+char *get_dfu_alt_system(void)
+{
+	return getenv("dfu_alt_system");
+}
+
+char *get_dfu_alt_boot(void)
+{
+	char *alt_boot;
+
+	switch (get_boot_mode()) {
+	case BOOT_MODE_SD:
+		alt_boot = CONFIG_DFU_ALT_BOOT_SD;
+		break;
+	case BOOT_MODE_EMMC:
+	case BOOT_MODE_EMMC_SD:
+		alt_boot = CONFIG_DFU_ALT_BOOT_EMMC;
+		break;
+	default:
+		alt_boot = NULL;
+		break;
+	}
+	return alt_boot;
+}
+#endif
+
+static void board_clock_init(void)
+{
+	unsigned int set, clr, clr_src_cpu, clr_pll_con0, clr_src_dmc;
+	struct exynos4x12_clock *clk = (struct exynos4x12_clock *)
+						samsung_get_base_clock();
+
+	/*
+	 * CMU_CPU clocks src to MPLL
+	 * Bit values:                 0  ; 1
+	 * MUX_APLL_SEL:        FIN_PLL   ; FOUT_APLL
+	 * MUX_CORE_SEL:        MOUT_APLL ; SCLK_MPLL
+	 * MUX_HPM_SEL:         MOUT_APLL ; SCLK_MPLL_USER_C
+	 * MUX_MPLL_USER_SEL_C: FIN_PLL   ; SCLK_MPLL
+	*/
+	clr_src_cpu = MUX_APLL_SEL(1) | MUX_CORE_SEL(1) |
+		      MUX_HPM_SEL(1) | MUX_MPLL_USER_SEL_C(1);
+	set = MUX_APLL_SEL(0) | MUX_CORE_SEL(1) | MUX_HPM_SEL(1) |
+	      MUX_MPLL_USER_SEL_C(1);
+
+	clrsetbits_le32(&clk->src_cpu, clr_src_cpu, set);
+
+	/* Wait for mux change */
+	while (readl(&clk->mux_stat_cpu) & MUX_STAT_CPU_CHANGING)
+		continue;
+
+	/* Set APLL to 1000MHz */
+	clr_pll_con0 = SDIV(7) | PDIV(63) | MDIV(1023) | FSEL(1);
+	set = SDIV(0) | PDIV(3) | MDIV(125) | FSEL(1);
+
+	clrsetbits_le32(&clk->apll_con0, clr_pll_con0, set);
+
+	/* Wait for PLL to be locked */
+	while (!(readl(&clk->apll_con0) & PLL_LOCKED_BIT))
+		continue;
+
+	/* Set CMU_CPU clocks src to APLL */
+	set = MUX_APLL_SEL(1) | MUX_CORE_SEL(0) | MUX_HPM_SEL(0) |
+	      MUX_MPLL_USER_SEL_C(1);
+	clrsetbits_le32(&clk->src_cpu, clr_src_cpu, set);
+
+	/* Wait for mux change */
+	while (readl(&clk->mux_stat_cpu) & MUX_STAT_CPU_CHANGING)
+		continue;
+
+	set = CORE_RATIO(0) | COREM0_RATIO(2) | COREM1_RATIO(5) |
+	      PERIPH_RATIO(0) | ATB_RATIO(4) | PCLK_DBG_RATIO(1) |
+	      APLL_RATIO(0) | CORE2_RATIO(0);
+	/*
+	 * Set dividers for MOUTcore = 1000 MHz
+	 * coreout =      MOUT / (ratio + 1) = 1000 MHz (0)
+	 * corem0 =     armclk / (ratio + 1) = 333 MHz (2)
+	 * corem1 =     armclk / (ratio + 1) = 166 MHz (5)
+	 * periph =     armclk / (ratio + 1) = 1000 MHz (0)
+	 * atbout =       MOUT / (ratio + 1) = 200 MHz (4)
+	 * pclkdbgout = atbout / (ratio + 1) = 100 MHz (1)
+	 * sclkapll = MOUTapll / (ratio + 1) = 1000 MHz (0)
+	 * core2out = core_out / (ratio + 1) = 1000 MHz (0) (armclk)
+	*/
+	clr = CORE_RATIO(7) | COREM0_RATIO(7) | COREM1_RATIO(7) |
+	      PERIPH_RATIO(7) | ATB_RATIO(7) | PCLK_DBG_RATIO(7) |
+	      APLL_RATIO(7) | CORE2_RATIO(7);
+
+	clrsetbits_le32(&clk->div_cpu0, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_cpu0) & DIV_STAT_CPU0_CHANGING)
+		continue;
+
+	/*
+	 * For MOUThpm = 1000 MHz (MOUTapll)
+	 * doutcopy = MOUThpm / (ratio + 1) = 200 (4)
+	 * sclkhpm = doutcopy / (ratio + 1) = 200 (4)
+	 * cores_out = armclk / (ratio + 1) = 1000 (0)
+	 */
+	clr = COPY_RATIO(7) | HPM_RATIO(7) | CORES_RATIO(7);
+	set = COPY_RATIO(4) | HPM_RATIO(4) | CORES_RATIO(0);
+
+	clrsetbits_le32(&clk->div_cpu1, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_cpu1) & DIV_STAT_CPU1_CHANGING)
+		continue;
+
+	/*
+	 * Set CMU_DMC clocks src to APLL
+	 * Bit values:             0  ; 1
+	 * MUX_C2C_SEL:      SCLKMPLL ; SCLKAPLL
+	 * MUX_DMC_BUS_SEL:  SCLKMPLL ; SCLKAPLL
+	 * MUX_DPHY_SEL:     SCLKMPLL ; SCLKAPLL
+	 * MUX_MPLL_SEL:     FINPLL   ; MOUT_MPLL_FOUT
+	 * MUX_PWI_SEL:      0110 (MPLL); 0111 (EPLL); 1000 (VPLL); 0(XXTI)
+	 * MUX_G2D_ACP0_SEL: SCLKMPLL ; SCLKAPLL
+	 * MUX_G2D_ACP1_SEL: SCLKEPLL ; SCLKVPLL
+	 * MUX_G2D_ACP_SEL:  OUT_ACP0 ; OUT_ACP1
+	*/
+	clr_src_dmc = MUX_C2C_SEL(1) | MUX_DMC_BUS_SEL(1) |
+		      MUX_DPHY_SEL(1) | MUX_MPLL_SEL(1) |
+		      MUX_PWI_SEL(15) | MUX_G2D_ACP0_SEL(1) |
+		      MUX_G2D_ACP1_SEL(1) | MUX_G2D_ACP_SEL(1);
+	set = MUX_C2C_SEL(1) | MUX_DMC_BUS_SEL(1) | MUX_DPHY_SEL(1) |
+	      MUX_MPLL_SEL(0) | MUX_PWI_SEL(0) | MUX_G2D_ACP0_SEL(1) |
+	      MUX_G2D_ACP1_SEL(1) | MUX_G2D_ACP_SEL(1);
+
+	clrsetbits_le32(&clk->src_dmc, clr_src_dmc, set);
+
+	/* Wait for mux change */
+	while (readl(&clk->mux_stat_dmc) & MUX_STAT_DMC_CHANGING)
+		continue;
+
+	/* Set MPLL to 800MHz */
+	set = SDIV(0) | PDIV(3) | MDIV(100) | FSEL(0) | PLL_ENABLE(1);
+
+	clrsetbits_le32(&clk->mpll_con0, clr_pll_con0, set);
+
+	/* Wait for PLL to be locked */
+	while (!(readl(&clk->mpll_con0) & PLL_LOCKED_BIT))
+		continue;
+
+	/* Switch back CMU_DMC mux */
+	set = MUX_C2C_SEL(0) | MUX_DMC_BUS_SEL(0) | MUX_DPHY_SEL(0) |
+	      MUX_MPLL_SEL(1) | MUX_PWI_SEL(8) | MUX_G2D_ACP0_SEL(0) |
+	      MUX_G2D_ACP1_SEL(0) | MUX_G2D_ACP_SEL(0);
+
+	clrsetbits_le32(&clk->src_dmc, clr_src_dmc, set);
+
+	/* Wait for mux change */
+	while (readl(&clk->mux_stat_dmc) & MUX_STAT_DMC_CHANGING)
+		continue;
+
+	/* CLK_DIV_DMC0 */
+	clr = ACP_RATIO(7) | ACP_PCLK_RATIO(7) | DPHY_RATIO(7) |
+	      DMC_RATIO(7) | DMCD_RATIO(7) | DMCP_RATIO(7);
+	/*
+	 * For:
+	 * MOUTdmc = 800 MHz
+	 * MOUTdphy = 800 MHz
+	 *
+	 * aclk_acp = MOUTdmc / (ratio + 1) = 200 (3)
+	 * pclk_acp = aclk_acp / (ratio + 1) = 100 (1)
+	 * sclk_dphy = MOUTdphy / (ratio + 1) = 400 (1)
+	 * sclk_dmc = MOUTdmc / (ratio + 1) = 400 (1)
+	 * aclk_dmcd = sclk_dmc / (ratio + 1) = 200 (1)
+	 * aclk_dmcp = aclk_dmcd / (ratio + 1) = 100 (1)
+	 */
+	set = ACP_RATIO(3) | ACP_PCLK_RATIO(1) | DPHY_RATIO(1) |
+	      DMC_RATIO(1) | DMCD_RATIO(1) | DMCP_RATIO(1);
+
+	clrsetbits_le32(&clk->div_dmc0, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_dmc0) & DIV_STAT_DMC0_CHANGING)
+		continue;
+
+	/* CLK_DIV_DMC1 */
+	clr = G2D_ACP_RATIO(15) | C2C_RATIO(7) | PWI_RATIO(15) |
+	      C2C_ACLK_RATIO(7) | DVSEM_RATIO(127) | DPM_RATIO(127);
+	/*
+	 * For:
+	 * MOUTg2d = 800 MHz
+	 * MOUTc2c = 800 Mhz
+	 * MOUTpwi = 108 MHz
+	 *
+	 * sclk_g2d_acp = MOUTg2d / (ratio + 1) = 400 (1)
+	 * sclk_c2c = MOUTc2c / (ratio + 1) = 400 (1)
+	 * aclk_c2c = sclk_c2c / (ratio + 1) = 200 (1)
+	 * sclk_pwi = MOUTpwi / (ratio + 1) = 18 (5)
+	 */
+	set = G2D_ACP_RATIO(1) | C2C_RATIO(1) | PWI_RATIO(5) |
+	      C2C_ACLK_RATIO(1) | DVSEM_RATIO(1) | DPM_RATIO(1);
+
+	clrsetbits_le32(&clk->div_dmc1, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_dmc1) & DIV_STAT_DMC1_CHANGING)
+		continue;
+
+	/* CLK_SRC_PERIL0 */
+	clr = UART0_SEL(15) | UART1_SEL(15) | UART2_SEL(15) |
+	      UART3_SEL(15) | UART4_SEL(15);
+	/*
+	 * Set CLK_SRC_PERIL0 clocks src to MPLL
+	 * src values: 0(XXTI); 1(XusbXTI); 2(SCLK_HDMI24M); 3(SCLK_USBPHY0);
+	 *             5(SCLK_HDMIPHY); 6(SCLK_MPLL_USER_T); 7(SCLK_EPLL);
+	 *             8(SCLK_VPLL)
+	 *
+	 * Set all to SCLK_MPLL_USER_T
+	 */
+	set = UART0_SEL(6) | UART1_SEL(6) | UART2_SEL(6) | UART3_SEL(6) |
+	      UART4_SEL(6);
+
+	clrsetbits_le32(&clk->src_peril0, clr, set);
+
+	/* CLK_DIV_PERIL0 */
+	clr = UART0_RATIO(15) | UART1_RATIO(15) | UART2_RATIO(15) |
+	      UART3_RATIO(15) | UART4_RATIO(15);
+	/*
+	 * For MOUTuart0-4: 800MHz
+	 *
+	 * SCLK_UARTx = MOUTuartX / (ratio + 1) = 100 (7)
+	*/
+	set = UART0_RATIO(7) | UART1_RATIO(7) | UART2_RATIO(7) |
+	      UART3_RATIO(7) | UART4_RATIO(7);
+
+	clrsetbits_le32(&clk->div_peril0, clr, set);
+
+	while (readl(&clk->div_stat_peril0) & DIV_STAT_PERIL0_CHANGING)
+		continue;
+
+	/* CLK_DIV_FSYS1 */
+	clr = MMC0_RATIO(15) | MMC0_PRE_RATIO(255) | MMC1_RATIO(15) |
+	      MMC1_PRE_RATIO(255);
+	/*
+	 * For MOUTmmc0-3 = 800 MHz (MPLL)
+	 *
+	 * DOUTmmc1 = MOUTmmc1 / (ratio + 1) = 100 (7)
+	 * sclk_mmc1 = DOUTmmc1 / (ratio + 1) = 50 (1)
+	 * DOUTmmc0 = MOUTmmc0 / (ratio + 1) = 100 (7)
+	 * sclk_mmc0 = DOUTmmc0 / (ratio + 1) = 50 (1)
+	*/
+	set = MMC0_RATIO(7) | MMC0_PRE_RATIO(1) | MMC1_RATIO(7) |
+	      MMC1_PRE_RATIO(1);
+
+	clrsetbits_le32(&clk->div_fsys1, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_fsys1) & DIV_STAT_FSYS1_CHANGING)
+		continue;
+
+	/* CLK_DIV_FSYS2 */
+	clr = MMC2_RATIO(15) | MMC2_PRE_RATIO(255) | MMC3_RATIO(15) |
+	      MMC3_PRE_RATIO(255);
+	/*
+	 * For MOUTmmc0-3 = 800 MHz (MPLL)
+	 *
+	 * DOUTmmc3 = MOUTmmc3 / (ratio + 1) = 100 (7)
+	 * sclk_mmc3 = DOUTmmc3 / (ratio + 1) = 50 (1)
+	 * DOUTmmc2 = MOUTmmc2 / (ratio + 1) = 100 (7)
+	 * sclk_mmc2 = DOUTmmc2 / (ratio + 1) = 50 (1)
+	*/
+	set = MMC2_RATIO(7) | MMC2_PRE_RATIO(1) | MMC3_RATIO(7) |
+	      MMC3_PRE_RATIO(1);
+
+	clrsetbits_le32(&clk->div_fsys2, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_fsys2) & DIV_STAT_FSYS2_CHANGING)
+		continue;
+
+	/* CLK_DIV_FSYS3 */
+	clr = MMC4_RATIO(15) | MMC4_PRE_RATIO(255);
+	/*
+	 * For MOUTmmc4 = 800 MHz (MPLL)
+	 *
+	 * DOUTmmc4 = MOUTmmc4 / (ratio + 1) = 100 (7)
+	 * sclk_mmc4 = DOUTmmc4 / (ratio + 1) = 100 (0)
+	*/
+	set = MMC4_RATIO(7) | MMC4_PRE_RATIO(0);
+
+	clrsetbits_le32(&clk->div_fsys3, clr, set);
+
+	/* Wait for divider ready status */
+	while (readl(&clk->div_stat_fsys3) & DIV_STAT_FSYS3_CHANGING)
+		continue;
+
+	return;
+}
+
+static void board_gpio_init(void)
+{
+	/* eMMC Reset Pin */
+	gpio_cfg_pin(EXYNOS4X12_GPIO_K12, S5P_GPIO_FUNC(0x1));
+	gpio_set_pull(EXYNOS4X12_GPIO_K12, S5P_GPIO_PULL_NONE);
+	gpio_set_drv(EXYNOS4X12_GPIO_K12, S5P_GPIO_DRV_4X);
+
+	/* Enable FAN (Odroid U3) */
+	gpio_set_pull(EXYNOS4X12_GPIO_D00, S5P_GPIO_PULL_UP);
+	gpio_set_drv(EXYNOS4X12_GPIO_D00, S5P_GPIO_DRV_4X);
+	gpio_direction_output(EXYNOS4X12_GPIO_D00, 1);
+
+	/* OTG Vbus output (Odroid U3+) */
+	gpio_set_pull(EXYNOS4X12_GPIO_L20, S5P_GPIO_PULL_NONE);
+	gpio_set_drv(EXYNOS4X12_GPIO_L20, S5P_GPIO_DRV_4X);
+	gpio_direction_output(EXYNOS4X12_GPIO_L20, 0);
+
+	/* OTG INT (Odroid U3+) */
+	gpio_set_pull(EXYNOS4X12_GPIO_X31, S5P_GPIO_PULL_UP);
+	gpio_set_drv(EXYNOS4X12_GPIO_X31, S5P_GPIO_DRV_4X);
+	gpio_direction_input(EXYNOS4X12_GPIO_X31);
+}
+
+static int pmic_init_max77686(void)
+{
+	struct pmic *p = pmic_get("MAX77686_PMIC");
+
+	if (pmic_probe(p))
+		return -ENODEV;
+
+	/* Set LDO Voltage */
+	max77686_set_ldo_voltage(p, 20, 1800000);	/* LDO20 eMMC */
+	max77686_set_ldo_voltage(p, 21, 2800000);	/* LDO21 SD */
+	max77686_set_ldo_voltage(p, 22, 2800000);	/* LDO22 eMMC */
+
+	return 0;
+}
+
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+static void board_init_i2c(void)
+{
+	/* I2C_0 */
+	if (exynos_pinmux_config(PERIPH_ID_I2C0, PINMUX_FLAG_NONE))
+		debug("I2C%d not configured\n", (I2C_0));
+}
+#endif
+
+int exynos_early_init_f(void)
+{
+	board_clock_init();
+	board_gpio_init();
+
+	return 0;
+}
+
+int exynos_init(void)
+{
+	/* The last MB of memory is reserved for secure firmware */
+	gd->ram_size -= SZ_1M;
+	gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= SZ_1M;
+
+	return 0;
+}
+
+int exynos_power_init(void)
+{
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+	board_init_i2c();
+#endif
+	pmic_init(I2C_0);
+	pmic_init_max77686();
+
+	return 0;
+}
+
+#ifdef CONFIG_USB_GADGET
+static int s5pc210_phy_control(int on)
+{
+	struct pmic *p_pmic;
+
+	p_pmic = pmic_get("MAX77686_PMIC");
+	if (!p_pmic)
+		return -ENODEV;
+
+	if (pmic_probe(p_pmic))
+		return -1;
+
+	if (on)
+		return max77686_set_ldo_mode(p_pmic, 12, OPMODE_ON);
+	else
+		return max77686_set_ldo_mode(p_pmic, 12, OPMODE_LPM);
+}
+
+struct s3c_plat_otg_data s5pc210_otg_data = {
+	.phy_control	= s5pc210_phy_control,
+	.regs_phy	= EXYNOS4X12_USBPHY_BASE,
+	.regs_otg	= EXYNOS4X12_USBOTG_BASE,
+	.usb_phy_ctrl	= EXYNOS4X12_USBPHY_CONTROL,
+	.usb_flags	= PHY0_SLEEP,
+};
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	debug("USB_udc_probe\n");
+	return s3c_udc_probe(&s5pc210_otg_data);
+}
+#endif
+
+void reset_misc(void)
+{
+	/* Reset eMMC*/
+	gpio_set_value(EXYNOS4X12_GPIO_K12, 0);
+	mdelay(10);
+	gpio_set_value(EXYNOS4X12_GPIO_K12, 1);
+}