board/samsung/odroid/odroid.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2014 Samsung Electronics
  * Przemyslaw Marczak <p.marczak@samsung.com>
  */

 #include <config.h>
 #include <log.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/power.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/gpio.h>
 #include <asm/global_data.h>
 #include <asm/gpio.h>
 #include <asm/arch/cpu.h>
 #include <dm.h>
 #include <env.h>
 #include <linux/printk.h>
 #include <power/pmic.h>
 #include <power/regulator.h>
 #include <power/max77686_pmic.h>
 #include <errno.h>
 #include <mmc.h>
 #include <usb.h>
 #include <usb/dwc2_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;
 }

 void set_board_revision(void)
 {
 	/*
 	 * Revision already set by set_board_type() because it can be
 	 * executed early.
 	 */
 }

 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(char *interface, char *devstr)
 {
 	return env_get("dfu_alt_system");
 }

 char *get_dfu_alt_boot(char *interface, char *devstr)
 {
 	struct mmc *mmc;
 	char *alt_boot;
 	int dev_num;

 	dev_num = dectoul(devstr, NULL);

 	mmc = find_mmc_device(dev_num);
 	if (!mmc)
 		return NULL;

 	if (mmc_init(mmc))
 		return NULL;

 	alt_boot = IS_SD(mmc) ? CFG_DFU_ALT_BOOT_SD :
 				CFG_DFU_ALT_BOOT_EMMC;

 	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) = 200 (4)
 	 */
 	clr = COPY_RATIO(7) | HPM_RATIO(7) | CORES_RATIO(7);
 	set = COPY_RATIO(4) | HPM_RATIO(4) | CORES_RATIO(4);

 	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) = 200 (3)
 	 * 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(3) | 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_request(EXYNOS4X12_GPIO_K12, "eMMC Reset");

 	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_request(EXYNOS4X12_GPIO_D00, "FAN Control");

 	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_request(EXYNOS4X12_GPIO_L20, "OTG Vbus");

 	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_request(EXYNOS4X12_GPIO_X31, "OTG INT");

 	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);

 	/* Blue LED (Odroid X2/U2/U3) */
 	gpio_request(EXYNOS4X12_GPIO_C10, "Blue LED");

 	gpio_direction_output(EXYNOS4X12_GPIO_C10, 0);

 #ifdef CONFIG_CMD_USB
 	/* USB3503A Reference frequency */
 	gpio_request(EXYNOS4X12_GPIO_X30, "USB3503A RefFreq");

 	/* USB3503A Connect */
 	gpio_request(EXYNOS4X12_GPIO_X34, "USB3503A Connect");

 	/* USB3503A Reset */
 	gpio_request(EXYNOS4X12_GPIO_X35, "USB3503A Reset");
 #endif
 }

 int exynos_early_init_f(void)
 {
 	board_clock_init();

 	return 0;
 }

 void exynos_init(void)
 {
 	board_gpio_init();
 }

 int exynos_power_init(void)
 {
 	const char *mmc_regulators[] = {
 		"VDDQ_EMMC_1.8V",
 		"VDDQ_EMMC_2.8V",
 		"TFLASH_2.8V",
 		NULL,
 	};

 	if (regulator_list_autoset(mmc_regulators, NULL, true))
 		pr_err("Unable to init all mmc regulators\n");

 	return 0;
 }

 #ifdef CONFIG_USB_GADGET
 static int s5pc210_phy_control(int on)
 {
 	struct udevice *dev;
 	int ret;

 	ret = regulator_get_by_platname("VDD_UOTG_3.0V", &dev);
 	if (ret) {
 		pr_err("Regulator get error: %d\n", ret);
 		return ret;
 	}

 	if (on)
 		return regulator_set_mode(dev, OPMODE_ON);
 	else
 		return regulator_set_mode(dev, OPMODE_LPM);
 }

 struct dwc2_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,
 };
 #endif

 #if defined(CONFIG_USB_GADGET) || defined(CONFIG_CMD_USB)

 static void set_usb3503_ref_clk(void)
 {
 #ifdef CONFIG_BOARD_TYPES
 	/*
 	 * gpx3-0 chooses primary (low) or secondary (high) reference clock
 	 * frequencies table.  The choice of clock is done through hard-wired
 	 * REF_SEL pins.
 	 * The Odroid Us have reference clock at 24 MHz (00 entry from secondary
 	 * table) and Odroid Xs have it at 26 MHz (01 entry from primary table).
 	 */
 	if (gd->board_type == ODROID_TYPE_U3)
 		gpio_direction_output(EXYNOS4X12_GPIO_X30, 0);
 	else
 		gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
 #else
 	/* Choose Odroid Xs frequency without board types */
 	gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
 #endif /* CONFIG_BOARD_TYPES */
 }

 int board_usb_init(int index, enum usb_init_type init)
 {
 #ifdef CONFIG_CMD_USB
 	struct udevice *dev;
 	int ret;

 	set_usb3503_ref_clk();

 	/* Disconnect, Reset, Connect */
 	gpio_direction_output(EXYNOS4X12_GPIO_X34, 0);
 	gpio_direction_output(EXYNOS4X12_GPIO_X35, 0);
 	gpio_direction_output(EXYNOS4X12_GPIO_X35, 1);
 	gpio_direction_output(EXYNOS4X12_GPIO_X34, 1);

 	/* Power off and on BUCK8 for LAN9730 */
 	debug("LAN9730 - Turning power buck 8 OFF and ON.\n");

 	ret = regulator_get_by_platname("VCC_P3V3_2.85V", &dev);
 	if (ret) {
 		pr_err("Regulator get error: %d\n", ret);
 		return ret;
 	}

 	ret = regulator_set_enable(dev, true);
 	if (ret) {
 		pr_err("Regulator %s enable setting error: %d\n", dev->name, ret);
 		return ret;
 	}

 	ret = regulator_set_value(dev, 750000);
 	if (ret) {
 		pr_err("Regulator %s value setting error: %d\n", dev->name, ret);
 		return ret;
 	}

 	ret = regulator_set_value(dev, 3300000);
 	if (ret) {
 		pr_err("Regulator %s value setting error: %d\n", dev->name, ret);
 		return ret;
 	}
 #endif
 	debug("USB_udc_probe\n");
 	return dwc2_udc_probe(&s5pc210_otg_data);
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2014 Samsung Electronics
	* Przemyslaw Marczak <p.marczak@samsung.com>
	*/

	#include <config.h>
	#include <log.h>
	#include <asm/arch/pinmux.h>
	#include <asm/arch/power.h>
	#include <asm/arch/clock.h>
	#include <asm/arch/gpio.h>
	#include <asm/global_data.h>
	#include <asm/gpio.h>
	#include <asm/arch/cpu.h>
	#include <dm.h>
	#include <env.h>
	#include <linux/printk.h>
	#include <power/pmic.h>
	#include <power/regulator.h>
	#include <power/max77686_pmic.h>
	#include <errno.h>
	#include <mmc.h>
	#include <usb.h>
	#include <usb/dwc2_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;
	}

	void set_board_revision(void)
	{
	/*
	* Revision already set by set_board_type() because it can be
	* executed early.
	*/
	}

	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(char interface, char *devstr)
	{
	return env_get("dfu_alt_system");
	}

	char get_dfu_alt_boot(char interface, char *devstr)
	{
	struct mmc *mmc;
	char *alt_boot;
	int dev_num;

	dev_num = dectoul(devstr, NULL);

	mmc = find_mmc_device(dev_num);
	if (!mmc)
	return NULL;

	if (mmc_init(mmc))
	return NULL;

	alt_boot = IS_SD(mmc) ? CFG_DFU_ALT_BOOT_SD :
	CFG_DFU_ALT_BOOT_EMMC;

	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) = 200 (4)
	*/
	clr = COPY_RATIO(7) \| HPM_RATIO(7) \| CORES_RATIO(7);
	set = COPY_RATIO(4) \| HPM_RATIO(4) \| CORES_RATIO(4);

	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) = 200 (3)
	* 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(3) \| 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_request(EXYNOS4X12_GPIO_K12, "eMMC Reset");

	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_request(EXYNOS4X12_GPIO_D00, "FAN Control");

	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_request(EXYNOS4X12_GPIO_L20, "OTG Vbus");

	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_request(EXYNOS4X12_GPIO_X31, "OTG INT");

	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);

	/* Blue LED (Odroid X2/U2/U3) */
	gpio_request(EXYNOS4X12_GPIO_C10, "Blue LED");

	gpio_direction_output(EXYNOS4X12_GPIO_C10, 0);

	#ifdef CONFIG_CMD_USB
	/* USB3503A Reference frequency */
	gpio_request(EXYNOS4X12_GPIO_X30, "USB3503A RefFreq");

	/* USB3503A Connect */
	gpio_request(EXYNOS4X12_GPIO_X34, "USB3503A Connect");

	/* USB3503A Reset */
	gpio_request(EXYNOS4X12_GPIO_X35, "USB3503A Reset");
	#endif
	}

	int exynos_early_init_f(void)
	{
	board_clock_init();

	return 0;
	}

	void exynos_init(void)
	{
	board_gpio_init();
	}

	int exynos_power_init(void)
	{
	const char *mmc_regulators[] = {
	"VDDQ_EMMC_1.8V",
	"VDDQ_EMMC_2.8V",
	"TFLASH_2.8V",
	NULL,
	};

	if (regulator_list_autoset(mmc_regulators, NULL, true))
	pr_err("Unable to init all mmc regulators\n");

	return 0;
	}

	#ifdef CONFIG_USB_GADGET
	static int s5pc210_phy_control(int on)
	{
	struct udevice *dev;
	int ret;

	ret = regulator_get_by_platname("VDD_UOTG_3.0V", &dev);
	if (ret) {
	pr_err("Regulator get error: %d\n", ret);
	return ret;
	}

	if (on)
	return regulator_set_mode(dev, OPMODE_ON);
	else
	return regulator_set_mode(dev, OPMODE_LPM);
	}

	struct dwc2_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,
	};
	#endif

	#if defined(CONFIG_USB_GADGET) \|\| defined(CONFIG_CMD_USB)

	static void set_usb3503_ref_clk(void)
	{
	#ifdef CONFIG_BOARD_TYPES
	/*
	* gpx3-0 chooses primary (low) or secondary (high) reference clock
	* frequencies table. The choice of clock is done through hard-wired
	* REF_SEL pins.
	* The Odroid Us have reference clock at 24 MHz (00 entry from secondary
	* table) and Odroid Xs have it at 26 MHz (01 entry from primary table).
	*/
	if (gd->board_type == ODROID_TYPE_U3)
	gpio_direction_output(EXYNOS4X12_GPIO_X30, 0);
	else
	gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
	#else
	/* Choose Odroid Xs frequency without board types */
	gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
	#endif /* CONFIG_BOARD_TYPES */
	}

	int board_usb_init(int index, enum usb_init_type init)
	{
	#ifdef CONFIG_CMD_USB
	struct udevice *dev;
	int ret;

	set_usb3503_ref_clk();

	/* Disconnect, Reset, Connect */
	gpio_direction_output(EXYNOS4X12_GPIO_X34, 0);
	gpio_direction_output(EXYNOS4X12_GPIO_X35, 0);
	gpio_direction_output(EXYNOS4X12_GPIO_X35, 1);
	gpio_direction_output(EXYNOS4X12_GPIO_X34, 1);

	/* Power off and on BUCK8 for LAN9730 */
	debug("LAN9730 - Turning power buck 8 OFF and ON.\n");

	ret = regulator_get_by_platname("VCC_P3V3_2.85V", &dev);
	if (ret) {
	pr_err("Regulator get error: %d\n", ret);
	return ret;
	}

	ret = regulator_set_enable(dev, true);
	if (ret) {
	pr_err("Regulator %s enable setting error: %d\n", dev->name, ret);
	return ret;
	}

	ret = regulator_set_value(dev, 750000);
	if (ret) {
	pr_err("Regulator %s value setting error: %d\n", dev->name, ret);
	return ret;
	}

	ret = regulator_set_value(dev, 3300000);
	if (ret) {
	pr_err("Regulator %s value setting error: %d\n", dev->name, ret);
	return ret;
	}
	#endif
	debug("USB_udc_probe\n");
	return dwc2_udc_probe(&s5pc210_otg_data);
	}
	#endif