board/solidrun/mx6cuboxi/mx6cuboxi.c - platform/external/u-boot - Gitiles

 /*
  * Copyright (C) 2015 Freescale Semiconductor, Inc.
  *
  * Author: Fabio Estevam <fabio.estevam@freescale.com>
  *
  * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
  *
  * Based on SPL code from Solidrun tree, which is:
  * Author: Tungyi Lin <tungyilin1127@gmail.com>
  *
  * Derived from EDM_CF_IMX6 code by TechNexion,Inc
  * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/mx6-pins.h>
 #include <asm/arch/mxc_hdmi.h>
 #include <asm/errno.h>
 #include <asm/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
 #include <asm/imx-common/video.h>
 #include <mmc.h>
 #include <fsl_esdhc.h>
 #include <malloc.h>
 #include <miiphy.h>
 #include <netdev.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/io.h>
 #include <asm/arch/sys_proto.h>
 #include <spl.h>
 #include <usb.h>
 #include <usb/ehci-fsl.h>

 DECLARE_GLOBAL_DATA_PTR;

 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

 #define ENET_PAD_CTRL_PD  (PAD_CTL_PUS_100K_DOWN |		\
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

 #define ENET_PAD_CTRL_CLK  ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)

 #define ETH_PHY_RESET	IMX_GPIO_NR(4, 15)
 #define USB_H1_VBUS	IMX_GPIO_NR(1, 0)

 int dram_init(void)
 {
 	gd->ram_size = imx_ddr_size();
 	return 0;
 }

 static iomux_v3_cfg_t const uart1_pads[] = {
 	IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 	IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 };

 static iomux_v3_cfg_t const usdhc2_pads[] = {
 	IOMUX_PADS(PAD_SD2_CLK__SD2_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD2_CMD__SD2_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 };

 static iomux_v3_cfg_t const hb_cbi_sense[] = {
 	/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
 	IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09  | MUX_PAD_CTRL(UART_PAD_CTRL)),
 	IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04   | MUX_PAD_CTRL(UART_PAD_CTRL)),
 };

 static iomux_v3_cfg_t const usb_pads[] = {
 	IOMUX_PADS(PAD_GPIO_0__GPIO1_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };

 static void setup_iomux_uart(void)
 {
 	SETUP_IOMUX_PADS(uart1_pads);
 }

 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
 	{USDHC2_BASE_ADDR},
 };

 int board_mmc_getcd(struct mmc *mmc)
 {
 	return 1; /* uSDHC2 is always present */
 }

 int board_mmc_init(bd_t *bis)
 {
 	SETUP_IOMUX_PADS(usdhc2_pads);
 	usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 	gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;

 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
 }

 static iomux_v3_cfg_t const enet_pads[] = {
 	IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	/* AR8035 reset */
 	IOMUX_PADS(PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
 	/* AR8035 interrupt */
 	IOMUX_PADS(PAD_DI0_PIN2__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL)),
 	/* GPIO16 -> AR8035 25MHz */
 	IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK	  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC	  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
 	IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK)),
 	IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
 	IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
 	IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
 };

 static void setup_iomux_enet(void)
 {
 	SETUP_IOMUX_PADS(enet_pads);

 	gpio_direction_output(ETH_PHY_RESET, 0);
 	mdelay(2);
 	gpio_set_value(ETH_PHY_RESET, 1);
 }

 int board_phy_config(struct phy_device *phydev)
 {
 	if (phydev->drv->config)
 		phydev->drv->config(phydev);

 	return 0;
 }

 /* On Cuboxi Ethernet PHY can be located at addresses 0x0 or 0x4 */
 #define ETH_PHY_MASK	((1 << 0x0) | (1 << 0x4))

 int board_eth_init(bd_t *bis)
 {
 	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 	struct mii_dev *bus;
 	struct phy_device *phydev;

 	int ret = enable_fec_anatop_clock(ENET_25MHZ);
 	if (ret)
 		return ret;

 	/* set gpr1[ENET_CLK_SEL] */
 	setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);

 	setup_iomux_enet();

 	bus = fec_get_miibus(IMX_FEC_BASE, -1);
 	if (!bus)
 		return -EINVAL;

 	phydev = phy_find_by_mask(bus, ETH_PHY_MASK, PHY_INTERFACE_MODE_RGMII);
 	if (!phydev) {
 		ret = -EINVAL;
 		goto free_bus;
 	}

 	debug("using phy at address %d\n", phydev->addr);
 	ret = fec_probe(bis, -1, IMX_FEC_BASE, bus, phydev);
 	if (ret)
 		goto free_phydev;

 	return 0;

 free_phydev:
 	free(phydev);
 free_bus:
 	free(bus);
 	return ret;
 }

 #ifdef CONFIG_VIDEO_IPUV3
 static void do_enable_hdmi(struct display_info_t const *dev)
 {
 	imx_enable_hdmi_phy();
 }

 struct display_info_t const displays[] = {
 	{
 		.bus	= -1,
 		.addr	= 0,
 		.pixfmt	= IPU_PIX_FMT_RGB24,
 		.detect	= detect_hdmi,
 		.enable	= do_enable_hdmi,
 		.mode	= {
 			.name           = "HDMI",
 			/* 1024x768@60Hz (VESA)*/
 			.refresh        = 60,
 			.xres           = 1024,
 			.yres           = 768,
 			.pixclock       = 15384,
 			.left_margin    = 160,
 			.right_margin   = 24,
 			.upper_margin   = 29,
 			.lower_margin   = 3,
 			.hsync_len      = 136,
 			.vsync_len      = 6,
 			.sync           = FB_SYNC_EXT,
 			.vmode          = FB_VMODE_NONINTERLACED
 		}
 	}
 };

 size_t display_count = ARRAY_SIZE(displays);

 static int setup_display(void)
 {
 	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 	int reg;
 	int timeout = 100000;

 	enable_ipu_clock();
 	imx_setup_hdmi();

 	/* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
 	setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);

 	reg = readl(&ccm->analog_pll_video);
 	reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
 	reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
 	reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
 	reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
 	writel(reg, &ccm->analog_pll_video);

 	writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
 	writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);

 	reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
 	writel(reg, &ccm->analog_pll_video);

 	while (timeout--)
 		if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
 			break;
 	if (timeout < 0) {
 		printf("Warning: video pll lock timeout!\n");
 		return -ETIMEDOUT;
 	}

 	reg = readl(&ccm->analog_pll_video);
 	reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
 	reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
 	writel(reg, &ccm->analog_pll_video);

 	/* gate ipu1_di0_clk */
 	clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);

 	/* select video_pll clock / 7  for ipu1_di0_clk -> 65MHz pixclock */
 	reg = readl(&ccm->chsccdr);
 	reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
 		 MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK |
 		 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
 	reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
 	       (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
 	       (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 	writel(reg, &ccm->chsccdr);

 	/* enable ipu1_di0_clk */
 	setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);

 	return 0;
 }
 #endif /* CONFIG_VIDEO_IPUV3 */

 #ifdef CONFIG_USB_EHCI_MX6
 static void setup_usb(void)
 {
 	SETUP_IOMUX_PADS(usb_pads);
 }

 int board_ehci_hcd_init(int port)
 {
 	if (port == 1)
 		gpio_direction_output(USB_H1_VBUS, 1);

 	return 0;
 }
 #endif

 int board_early_init_f(void)
 {
 	int ret = 0;
 	setup_iomux_uart();

 #ifdef CONFIG_VIDEO_IPUV3
 	ret = setup_display();
 #endif

 #ifdef CONFIG_USB_EHCI_MX6
 	setup_usb();
 #endif
 	return ret;
 }

 int board_init(void)
 {
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

 	return 0;
 }

 static bool is_hummingboard(void)
 {
 	int val1, val2;

 	SETUP_IOMUX_PADS(hb_cbi_sense);

 	gpio_direction_input(IMX_GPIO_NR(4, 9));
 	gpio_direction_input(IMX_GPIO_NR(3, 4));

 	val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
 	val2 = gpio_get_value(IMX_GPIO_NR(3, 4));

 	/*
 	 * Machine selection -
 	 * Machine        val1, val2
 	 * -------------------------
 	 * HB rev 3.x     x     0
 	 * CBi            0     1
 	 * HB             1     1
 	 */

 	if (val2 == 0)
 		return true;
 	else if (val1 == 0)
 		return false;
 	else
 		return true;
 }

 int checkboard(void)
 {
 	if (is_hummingboard())
 		puts("Board: MX6 Hummingboard\n");
 	else
 		puts("Board: MX6 Cubox-i\n");

 	return 0;
 }

 static bool is_mx6q(void)
 {
 	if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D))
 		return true;
 	else
 		return false;
 }

 int board_late_init(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	if (is_hummingboard())
 		setenv("board_name", "HUMMINGBOARD");
 	else
 		setenv("board_name", "CUBOXI");

 	if (is_mx6q())
 		setenv("board_rev", "MX6Q");
 	else
 		setenv("board_rev", "MX6DL");
 #endif

 	return 0;
 }

 #ifdef CONFIG_SPL_BUILD
 #include <asm/arch/mx6-ddr.h>
 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
 	.dram_sdclk_0 =  0x00020030,
 	.dram_sdclk_1 =  0x00020030,
 	.dram_cas =  0x00020030,
 	.dram_ras =  0x00020030,
 	.dram_reset =  0x00020030,
 	.dram_sdcke0 =  0x00003000,
 	.dram_sdcke1 =  0x00003000,
 	.dram_sdba2 =  0x00000000,
 	.dram_sdodt0 =  0x00003030,
 	.dram_sdodt1 =  0x00003030,
 	.dram_sdqs0 =  0x00000030,
 	.dram_sdqs1 =  0x00000030,
 	.dram_sdqs2 =  0x00000030,
 	.dram_sdqs3 =  0x00000030,
 	.dram_sdqs4 =  0x00000030,
 	.dram_sdqs5 =  0x00000030,
 	.dram_sdqs6 =  0x00000030,
 	.dram_sdqs7 =  0x00000030,
 	.dram_dqm0 =  0x00020030,
 	.dram_dqm1 =  0x00020030,
 	.dram_dqm2 =  0x00020030,
 	.dram_dqm3 =  0x00020030,
 	.dram_dqm4 =  0x00020030,
 	.dram_dqm5 =  0x00020030,
 	.dram_dqm6 =  0x00020030,
 	.dram_dqm7 =  0x00020030,
 };

 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
 	.dram_sdclk_0 = 0x00000028,
 	.dram_sdclk_1 = 0x00000028,
 	.dram_cas =	0x00000028,
 	.dram_ras =	0x00000028,
 	.dram_reset =	0x000c0028,
 	.dram_sdcke0 =	0x00003000,
 	.dram_sdcke1 =	0x00003000,
 	.dram_sdba2 =	0x00000000,
 	.dram_sdodt0 =	0x00003030,
 	.dram_sdodt1 =	0x00003030,
 	.dram_sdqs0 =	0x00000028,
 	.dram_sdqs1 =	0x00000028,
 	.dram_sdqs2 =	0x00000028,
 	.dram_sdqs3 =	0x00000028,
 	.dram_sdqs4 =	0x00000028,
 	.dram_sdqs5 =	0x00000028,
 	.dram_sdqs6 =	0x00000028,
 	.dram_sdqs7 =	0x00000028,
 	.dram_dqm0 =	0x00000028,
 	.dram_dqm1 =	0x00000028,
 	.dram_dqm2 =	0x00000028,
 	.dram_dqm3 =	0x00000028,
 	.dram_dqm4 =	0x00000028,
 	.dram_dqm5 =	0x00000028,
 	.dram_dqm6 =	0x00000028,
 	.dram_dqm7 =	0x00000028,
 };

 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
 	.grp_ddr_type =  0x000C0000,
 	.grp_ddrmode_ctl =  0x00020000,
 	.grp_ddrpke =  0x00000000,
 	.grp_addds =  0x00000030,
 	.grp_ctlds =  0x00000030,
 	.grp_ddrmode =  0x00020000,
 	.grp_b0ds =  0x00000030,
 	.grp_b1ds =  0x00000030,
 	.grp_b2ds =  0x00000030,
 	.grp_b3ds =  0x00000030,
 	.grp_b4ds =  0x00000030,
 	.grp_b5ds =  0x00000030,
 	.grp_b6ds =  0x00000030,
 	.grp_b7ds =  0x00000030,
 };

 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 	.grp_ddr_type = 0x000c0000,
 	.grp_ddrmode_ctl = 0x00020000,
 	.grp_ddrpke = 0x00000000,
 	.grp_addds = 0x00000028,
 	.grp_ctlds = 0x00000028,
 	.grp_ddrmode = 0x00020000,
 	.grp_b0ds = 0x00000028,
 	.grp_b1ds = 0x00000028,
 	.grp_b2ds = 0x00000028,
 	.grp_b3ds = 0x00000028,
 	.grp_b4ds = 0x00000028,
 	.grp_b5ds = 0x00000028,
 	.grp_b6ds = 0x00000028,
 	.grp_b7ds = 0x00000028,
 };

 /* microSOM with Dual processor and 1GB memory */
 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
 	.p0_mpwldectrl0 =  0x00000000,
 	.p0_mpwldectrl1 =  0x00000000,
 	.p1_mpwldectrl0 =  0x00000000,
 	.p1_mpwldectrl1 =  0x00000000,
 	.p0_mpdgctrl0 =    0x0314031c,
 	.p0_mpdgctrl1 =    0x023e0304,
 	.p1_mpdgctrl0 =    0x03240330,
 	.p1_mpdgctrl1 =    0x03180260,
 	.p0_mprddlctl =    0x3630323c,
 	.p1_mprddlctl =    0x3436283a,
 	.p0_mpwrdlctl =    0x36344038,
 	.p1_mpwrdlctl =    0x422a423c,
 };

 /* microSOM with Quad processor and 2GB memory */
 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
 	.p0_mpwldectrl0 =  0x00000000,
 	.p0_mpwldectrl1 =  0x00000000,
 	.p1_mpwldectrl0 =  0x00000000,
 	.p1_mpwldectrl1 =  0x00000000,
 	.p0_mpdgctrl0 =    0x0314031c,
 	.p0_mpdgctrl1 =    0x023e0304,
 	.p1_mpdgctrl0 =    0x03240330,
 	.p1_mpdgctrl1 =    0x03180260,
 	.p0_mprddlctl =    0x3630323c,
 	.p1_mprddlctl =    0x3436283a,
 	.p0_mpwrdlctl =    0x36344038,
 	.p1_mpwrdlctl =    0x422a423c,
 };

 /* microSOM with Solo processor and 512MB memory */
 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
 	.p0_mpwldectrl0 = 0x0045004D,
 	.p0_mpwldectrl1 = 0x003A0047,
 	.p0_mpdgctrl0 =   0x023C0224,
 	.p0_mpdgctrl1 =   0x02000220,
 	.p0_mprddlctl =   0x44444846,
 	.p0_mpwrdlctl =   0x32343032,
 };

 /* microSOM with Dual lite processor and 1GB memory */
 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
 	.p0_mpwldectrl0 =  0x0045004D,
 	.p0_mpwldectrl1 =  0x003A0047,
 	.p1_mpwldectrl0 =  0x001F001F,
 	.p1_mpwldectrl1 =  0x00210035,
 	.p0_mpdgctrl0 =    0x023C0224,
 	.p0_mpdgctrl1 =    0x02000220,
 	.p1_mpdgctrl0 =    0x02200220,
 	.p1_mpdgctrl1 =    0x02000220,
 	.p0_mprddlctl =    0x44444846,
 	.p1_mprddlctl =    0x4042463C,
 	.p0_mpwrdlctl =    0x32343032,
 	.p1_mpwrdlctl =    0x36363430,
 };

 static struct mx6_ddr3_cfg mem_ddr_2g = {
 	.mem_speed = 1600,
 	.density   = 2,
 	.width     = 16,
 	.banks     = 8,
 	.rowaddr   = 14,
 	.coladdr   = 10,
 	.pagesz    = 2,
 	.trcd      = 1375,
 	.trcmin    = 4875,
 	.trasmin   = 3500,
 	.SRT       = 1,
 };

 static struct mx6_ddr3_cfg mem_ddr_4g = {
 	.mem_speed = 1600,
 	.density = 4,
 	.width = 16,
 	.banks = 8,
 	.rowaddr = 15,
 	.coladdr = 10,
 	.pagesz = 2,
 	.trcd = 1375,
 	.trcmin = 4875,
 	.trasmin = 3500,
 };

 static void ccgr_init(void)
 {
 	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

 	writel(0x00C03F3F, &ccm->CCGR0);
 	writel(0x0030FC03, &ccm->CCGR1);
 	writel(0x0FFFC000, &ccm->CCGR2);
 	writel(0x3FF00000, &ccm->CCGR3);
 	writel(0x00FFF300, &ccm->CCGR4);
 	writel(0x0F0000C3, &ccm->CCGR5);
 	writel(0x000003FF, &ccm->CCGR6);
 }

 static void gpr_init(void)
 {
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;

 	/* enable AXI cache for VDOA/VPU/IPU */
 	writel(0xF00000CF, &iomux->gpr[4]);
 	/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
 	writel(0x007F007F, &iomux->gpr[6]);
 	writel(0x007F007F, &iomux->gpr[7]);
 }

 /*
  * This section requires the differentiation between Solidrun mx6 boards, but
  * for now, it will configure only for the mx6dual hummingboard version.
  */
 static void spl_dram_init(int width)
 {
 	struct mx6_ddr_sysinfo sysinfo = {
 		/* width of data bus: 0=16, 1=32, 2=64 */
 		.dsize = width / 32,
 		/* config for full 4GB range so that get_mem_size() works */
 		.cs_density = 32,	/* 32Gb per CS */
 		.ncs = 1,		/* single chip select */
 		.cs1_mirror = 0,
 		.rtt_wr = 1 /*DDR3_RTT_60_OHM*/,	/* RTT_Wr = RZQ/4 */
 		.rtt_nom = 1 /*DDR3_RTT_60_OHM*/,	/* RTT_Nom = RZQ/4 */
 		.walat = 1,	/* Write additional latency */
 		.ralat = 5,	/* Read additional latency */
 		.mif3_mode = 3,	/* Command prediction working mode */
 		.bi_on = 1,	/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
 	};

 	if (is_cpu_type(MXC_CPU_MX6D) || is_cpu_type(MXC_CPU_MX6Q))
 		mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
 	else
 		mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);

 	if (is_cpu_type(MXC_CPU_MX6D))
 		mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
 	else if (is_cpu_type(MXC_CPU_MX6Q))
 		mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
 	else if (is_cpu_type(MXC_CPU_MX6DL))
 		mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
 	else if (is_cpu_type(MXC_CPU_MX6SOLO))
 		mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
 }

 void board_init_f(ulong dummy)
 {
 	/* setup AIPS and disable watchdog */
 	arch_cpu_init();

 	ccgr_init();
 	gpr_init();

 	/* iomux and setup of i2c */
 	board_early_init_f();

 	/* setup GP timer */
 	timer_init();

 	/* UART clocks enabled and gd valid - init serial console */
 	preloader_console_init();

 	/* DDR initialization */
 	if (is_cpu_type(MXC_CPU_MX6SOLO))
 		spl_dram_init(32);
 	else
 		spl_dram_init(64);

 	/* Clear the BSS. */
 	memset(__bss_start, 0, __bss_end - __bss_start);

 	/* load/boot image from boot device */
 	board_init_r(NULL, 0);
 }
 #endif
	/*
	* Copyright (C) 2015 Freescale Semiconductor, Inc.
	*
	* Author: Fabio Estevam <fabio.estevam@freescale.com>
	*
	* Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
	*
	* Based on SPL code from Solidrun tree, which is:
	* Author: Tungyi Lin <tungyilin1127@gmail.com>
	*
	* Derived from EDM_CF_IMX6 code by TechNexion,Inc
	* Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <asm/arch/clock.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/iomux.h>
	#include <asm/arch/mx6-pins.h>
	#include <asm/arch/mxc_hdmi.h>
	#include <asm/errno.h>
	#include <asm/gpio.h>
	#include <asm/imx-common/iomux-v3.h>
	#include <asm/imx-common/video.h>
	#include <mmc.h>
	#include <fsl_esdhc.h>
	#include <malloc.h>
	#include <miiphy.h>
	#include <netdev.h>
	#include <asm/arch/crm_regs.h>
	#include <asm/io.h>
	#include <asm/arch/sys_proto.h>
	#include <spl.h>
	#include <usb.h>
	#include <usb/ehci-fsl.h>

	DECLARE_GLOBAL_DATA_PTR;

	#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP \| \
	PAD_CTL_SPEED_MED \| PAD_CTL_DSE_40ohm \| \
	PAD_CTL_SRE_FAST \| PAD_CTL_HYS)

	#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP \| \
	PAD_CTL_SPEED_LOW \| PAD_CTL_DSE_80ohm \| \
	PAD_CTL_SRE_FAST \| PAD_CTL_HYS)

	#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP \| \
	PAD_CTL_SPEED_MED \| PAD_CTL_DSE_40ohm \| PAD_CTL_HYS)

	#define ENET_PAD_CTRL_PD (PAD_CTL_PUS_100K_DOWN \| \
	PAD_CTL_SPEED_MED \| PAD_CTL_DSE_40ohm \| PAD_CTL_HYS)

	#define ENET_PAD_CTRL_CLK ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) \| \
	PAD_CTL_SPEED_MED \| PAD_CTL_DSE_40ohm \| PAD_CTL_SRE_FAST)

	#define ETH_PHY_RESET IMX_GPIO_NR(4, 15)
	#define USB_H1_VBUS IMX_GPIO_NR(1, 0)

	int dram_init(void)
	{
	gd->ram_size = imx_ddr_size();
	return 0;
	}

	static iomux_v3_cfg_t const uart1_pads[] = {
	IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA \| MUX_PAD_CTRL(UART_PAD_CTRL)),
	IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA \| MUX_PAD_CTRL(UART_PAD_CTRL)),
	};

	static iomux_v3_cfg_t const usdhc2_pads[] = {
	IOMUX_PADS(PAD_SD2_CLK__SD2_CLK \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD2_CMD__SD2_CMD \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	};

	static iomux_v3_cfg_t const hb_cbi_sense[] = {
	/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
	IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 \| MUX_PAD_CTRL(UART_PAD_CTRL)),
	IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 \| MUX_PAD_CTRL(UART_PAD_CTRL)),
	};

	static iomux_v3_cfg_t const usb_pads[] = {
	IOMUX_PADS(PAD_GPIO_0__GPIO1_IO00 \| MUX_PAD_CTRL(NO_PAD_CTRL)),
	};

	static void setup_iomux_uart(void)
	{
	SETUP_IOMUX_PADS(uart1_pads);
	}

	static struct fsl_esdhc_cfg usdhc_cfg[1] = {
	{USDHC2_BASE_ADDR},
	};

	int board_mmc_getcd(struct mmc *mmc)
	{
	return 1; /* uSDHC2 is always present */
	}

	int board_mmc_init(bd_t *bis)
	{
	SETUP_IOMUX_PADS(usdhc2_pads);
	usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
	gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;

	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
	}

	static iomux_v3_cfg_t const enet_pads[] = {
	IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_ENET_MDC__ENET_MDC \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	/* AR8035 reset */
	IOMUX_PADS(PAD_KEY_ROW4__GPIO4_IO15 \| MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
	/* AR8035 interrupt */
	IOMUX_PADS(PAD_DI0_PIN2__GPIO4_IO18 \| MUX_PAD_CTRL(NO_PAD_CTRL)),
	/* GPIO16 -> AR8035 25MHz */
	IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK \| MUX_PAD_CTRL(NO_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC \| MUX_PAD_CTRL(NO_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
	IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK \| MUX_PAD_CTRL(ENET_PAD_CTRL_CLK)),
	IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 \| MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
	IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 \| MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
	IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 \| MUX_PAD_CTRL(ENET_PAD_CTRL)),
	IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL \| MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
	};

	static void setup_iomux_enet(void)
	{
	SETUP_IOMUX_PADS(enet_pads);

	gpio_direction_output(ETH_PHY_RESET, 0);
	mdelay(2);
	gpio_set_value(ETH_PHY_RESET, 1);
	}

	int board_phy_config(struct phy_device *phydev)
	{
	if (phydev->drv->config)
	phydev->drv->config(phydev);

	return 0;
	}

	/* On Cuboxi Ethernet PHY can be located at addresses 0x0 or 0x4 */
	#define ETH_PHY_MASK ((1 << 0x0) \| (1 << 0x4))

	int board_eth_init(bd_t *bis)
	{
	struct iomuxc const iomuxc_regs = (struct iomuxc )IOMUXC_BASE_ADDR;
	struct mii_dev *bus;
	struct phy_device *phydev;

	int ret = enable_fec_anatop_clock(ENET_25MHZ);
	if (ret)
	return ret;

	/* set gpr1[ENET_CLK_SEL] */
	setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);

	setup_iomux_enet();

	bus = fec_get_miibus(IMX_FEC_BASE, -1);
	if (!bus)
	return -EINVAL;

	phydev = phy_find_by_mask(bus, ETH_PHY_MASK, PHY_INTERFACE_MODE_RGMII);
	if (!phydev) {
	ret = -EINVAL;
	goto free_bus;
	}

	debug("using phy at address %d\n", phydev->addr);
	ret = fec_probe(bis, -1, IMX_FEC_BASE, bus, phydev);
	if (ret)
	goto free_phydev;

	return 0;

	free_phydev:
	free(phydev);
	free_bus:
	free(bus);
	return ret;
	}

	#ifdef CONFIG_VIDEO_IPUV3
	static void do_enable_hdmi(struct display_info_t const *dev)
	{
	imx_enable_hdmi_phy();
	}

	struct display_info_t const displays[] = {
	{
	.bus = -1,
	.addr = 0,
	.pixfmt = IPU_PIX_FMT_RGB24,
	.detect = detect_hdmi,
	.enable = do_enable_hdmi,
	.mode = {
	.name = "HDMI",
	/* 1024x768@60Hz (VESA)*/
	.refresh = 60,
	.xres = 1024,
	.yres = 768,
	.pixclock = 15384,
	.left_margin = 160,
	.right_margin = 24,
	.upper_margin = 29,
	.lower_margin = 3,
	.hsync_len = 136,
	.vsync_len = 6,
	.sync = FB_SYNC_EXT,
	.vmode = FB_VMODE_NONINTERLACED
	}
	}
	};

	size_t display_count = ARRAY_SIZE(displays);

	static int setup_display(void)
	{
	struct mxc_ccm_reg ccm = (struct mxc_ccm_reg )CCM_BASE_ADDR;
	int reg;
	int timeout = 100000;

	enable_ipu_clock();
	imx_setup_hdmi();

	/* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
	setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);

	reg = readl(&ccm->analog_pll_video);
	reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
	reg \|= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
	reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
	reg \|= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
	writel(reg, &ccm->analog_pll_video);

	writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
	writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);

	reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
	writel(reg, &ccm->analog_pll_video);

	while (timeout--)
	if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
	break;
	if (timeout < 0) {
	printf("Warning: video pll lock timeout!\n");
	return -ETIMEDOUT;
	}

	reg = readl(&ccm->analog_pll_video);
	reg \|= BM_ANADIG_PLL_VIDEO_ENABLE;
	reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
	writel(reg, &ccm->analog_pll_video);

	/* gate ipu1_di0_clk */
	clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);

	/* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */
	reg = readl(&ccm->chsccdr);
	reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK \|
	MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK \|
	MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
	reg \|= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) \|
	(6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) \|
	(0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
	writel(reg, &ccm->chsccdr);

	/* enable ipu1_di0_clk */
	setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);

	return 0;
	}
	#endif /* CONFIG_VIDEO_IPUV3 */

	#ifdef CONFIG_USB_EHCI_MX6
	static void setup_usb(void)
	{
	SETUP_IOMUX_PADS(usb_pads);
	}

	int board_ehci_hcd_init(int port)
	{
	if (port == 1)
	gpio_direction_output(USB_H1_VBUS, 1);

	return 0;
	}
	#endif

	int board_early_init_f(void)
	{
	int ret = 0;
	setup_iomux_uart();

	#ifdef CONFIG_VIDEO_IPUV3
	ret = setup_display();
	#endif

	#ifdef CONFIG_USB_EHCI_MX6
	setup_usb();
	#endif
	return ret;
	}

	int board_init(void)
	{
	/* address of boot parameters */
	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

	return 0;
	}

	static bool is_hummingboard(void)
	{
	int val1, val2;

	SETUP_IOMUX_PADS(hb_cbi_sense);

	gpio_direction_input(IMX_GPIO_NR(4, 9));
	gpio_direction_input(IMX_GPIO_NR(3, 4));

	val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
	val2 = gpio_get_value(IMX_GPIO_NR(3, 4));

	/*
	* Machine selection -
	* Machine val1, val2
	* -------------------------
	* HB rev 3.x x 0
	* CBi 0 1
	* HB 1 1
	*/

	if (val2 == 0)
	return true;
	else if (val1 == 0)
	return false;
	else
	return true;
	}

	int checkboard(void)
	{
	if (is_hummingboard())
	puts("Board: MX6 Hummingboard\n");
	else
	puts("Board: MX6 Cubox-i\n");

	return 0;
	}

	static bool is_mx6q(void)
	{
	if (is_cpu_type(MXC_CPU_MX6Q) \|\| is_cpu_type(MXC_CPU_MX6D))
	return true;
	else
	return false;
	}

	int board_late_init(void)
	{
	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	if (is_hummingboard())
	setenv("board_name", "HUMMINGBOARD");
	else
	setenv("board_name", "CUBOXI");

	if (is_mx6q())
	setenv("board_rev", "MX6Q");
	else
	setenv("board_rev", "MX6DL");
	#endif

	return 0;
	}

	#ifdef CONFIG_SPL_BUILD
	#include <asm/arch/mx6-ddr.h>
	static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
	.dram_sdclk_0 = 0x00020030,
	.dram_sdclk_1 = 0x00020030,
	.dram_cas = 0x00020030,
	.dram_ras = 0x00020030,
	.dram_reset = 0x00020030,
	.dram_sdcke0 = 0x00003000,
	.dram_sdcke1 = 0x00003000,
	.dram_sdba2 = 0x00000000,
	.dram_sdodt0 = 0x00003030,
	.dram_sdodt1 = 0x00003030,
	.dram_sdqs0 = 0x00000030,
	.dram_sdqs1 = 0x00000030,
	.dram_sdqs2 = 0x00000030,
	.dram_sdqs3 = 0x00000030,
	.dram_sdqs4 = 0x00000030,
	.dram_sdqs5 = 0x00000030,
	.dram_sdqs6 = 0x00000030,
	.dram_sdqs7 = 0x00000030,
	.dram_dqm0 = 0x00020030,
	.dram_dqm1 = 0x00020030,
	.dram_dqm2 = 0x00020030,
	.dram_dqm3 = 0x00020030,
	.dram_dqm4 = 0x00020030,
	.dram_dqm5 = 0x00020030,
	.dram_dqm6 = 0x00020030,
	.dram_dqm7 = 0x00020030,
	};

	static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
	.dram_sdclk_0 = 0x00000028,
	.dram_sdclk_1 = 0x00000028,
	.dram_cas = 0x00000028,
	.dram_ras = 0x00000028,
	.dram_reset = 0x000c0028,
	.dram_sdcke0 = 0x00003000,
	.dram_sdcke1 = 0x00003000,
	.dram_sdba2 = 0x00000000,
	.dram_sdodt0 = 0x00003030,
	.dram_sdodt1 = 0x00003030,
	.dram_sdqs0 = 0x00000028,
	.dram_sdqs1 = 0x00000028,
	.dram_sdqs2 = 0x00000028,
	.dram_sdqs3 = 0x00000028,
	.dram_sdqs4 = 0x00000028,
	.dram_sdqs5 = 0x00000028,
	.dram_sdqs6 = 0x00000028,
	.dram_sdqs7 = 0x00000028,
	.dram_dqm0 = 0x00000028,
	.dram_dqm1 = 0x00000028,
	.dram_dqm2 = 0x00000028,
	.dram_dqm3 = 0x00000028,
	.dram_dqm4 = 0x00000028,
	.dram_dqm5 = 0x00000028,
	.dram_dqm6 = 0x00000028,
	.dram_dqm7 = 0x00000028,
	};

	static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
	.grp_ddr_type = 0x000C0000,
	.grp_ddrmode_ctl = 0x00020000,
	.grp_ddrpke = 0x00000000,
	.grp_addds = 0x00000030,
	.grp_ctlds = 0x00000030,
	.grp_ddrmode = 0x00020000,
	.grp_b0ds = 0x00000030,
	.grp_b1ds = 0x00000030,
	.grp_b2ds = 0x00000030,
	.grp_b3ds = 0x00000030,
	.grp_b4ds = 0x00000030,
	.grp_b5ds = 0x00000030,
	.grp_b6ds = 0x00000030,
	.grp_b7ds = 0x00000030,
	};

	static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
	.grp_ddr_type = 0x000c0000,
	.grp_ddrmode_ctl = 0x00020000,
	.grp_ddrpke = 0x00000000,
	.grp_addds = 0x00000028,
	.grp_ctlds = 0x00000028,
	.grp_ddrmode = 0x00020000,
	.grp_b0ds = 0x00000028,
	.grp_b1ds = 0x00000028,
	.grp_b2ds = 0x00000028,
	.grp_b3ds = 0x00000028,
	.grp_b4ds = 0x00000028,
	.grp_b5ds = 0x00000028,
	.grp_b6ds = 0x00000028,
	.grp_b7ds = 0x00000028,
	};

	/* microSOM with Dual processor and 1GB memory */
	static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
	.p0_mpwldectrl0 = 0x00000000,
	.p0_mpwldectrl1 = 0x00000000,
	.p1_mpwldectrl0 = 0x00000000,
	.p1_mpwldectrl1 = 0x00000000,
	.p0_mpdgctrl0 = 0x0314031c,
	.p0_mpdgctrl1 = 0x023e0304,
	.p1_mpdgctrl0 = 0x03240330,
	.p1_mpdgctrl1 = 0x03180260,
	.p0_mprddlctl = 0x3630323c,
	.p1_mprddlctl = 0x3436283a,
	.p0_mpwrdlctl = 0x36344038,
	.p1_mpwrdlctl = 0x422a423c,
	};

	/* microSOM with Quad processor and 2GB memory */
	static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
	.p0_mpwldectrl0 = 0x00000000,
	.p0_mpwldectrl1 = 0x00000000,
	.p1_mpwldectrl0 = 0x00000000,
	.p1_mpwldectrl1 = 0x00000000,
	.p0_mpdgctrl0 = 0x0314031c,
	.p0_mpdgctrl1 = 0x023e0304,
	.p1_mpdgctrl0 = 0x03240330,
	.p1_mpdgctrl1 = 0x03180260,
	.p0_mprddlctl = 0x3630323c,
	.p1_mprddlctl = 0x3436283a,
	.p0_mpwrdlctl = 0x36344038,
	.p1_mpwrdlctl = 0x422a423c,
	};

	/* microSOM with Solo processor and 512MB memory */
	static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
	.p0_mpwldectrl0 = 0x0045004D,
	.p0_mpwldectrl1 = 0x003A0047,
	.p0_mpdgctrl0 = 0x023C0224,
	.p0_mpdgctrl1 = 0x02000220,
	.p0_mprddlctl = 0x44444846,
	.p0_mpwrdlctl = 0x32343032,
	};

	/* microSOM with Dual lite processor and 1GB memory */
	static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
	.p0_mpwldectrl0 = 0x0045004D,
	.p0_mpwldectrl1 = 0x003A0047,
	.p1_mpwldectrl0 = 0x001F001F,
	.p1_mpwldectrl1 = 0x00210035,
	.p0_mpdgctrl0 = 0x023C0224,
	.p0_mpdgctrl1 = 0x02000220,
	.p1_mpdgctrl0 = 0x02200220,
	.p1_mpdgctrl1 = 0x02000220,
	.p0_mprddlctl = 0x44444846,
	.p1_mprddlctl = 0x4042463C,
	.p0_mpwrdlctl = 0x32343032,
	.p1_mpwrdlctl = 0x36363430,
	};

	static struct mx6_ddr3_cfg mem_ddr_2g = {
	.mem_speed = 1600,
	.density = 2,
	.width = 16,
	.banks = 8,
	.rowaddr = 14,
	.coladdr = 10,
	.pagesz = 2,
	.trcd = 1375,
	.trcmin = 4875,
	.trasmin = 3500,
	.SRT = 1,
	};

	static struct mx6_ddr3_cfg mem_ddr_4g = {
	.mem_speed = 1600,
	.density = 4,
	.width = 16,
	.banks = 8,
	.rowaddr = 15,
	.coladdr = 10,
	.pagesz = 2,
	.trcd = 1375,
	.trcmin = 4875,
	.trasmin = 3500,
	};

	static void ccgr_init(void)
	{
	struct mxc_ccm_reg ccm = (struct mxc_ccm_reg )CCM_BASE_ADDR;

	writel(0x00C03F3F, &ccm->CCGR0);
	writel(0x0030FC03, &ccm->CCGR1);
	writel(0x0FFFC000, &ccm->CCGR2);
	writel(0x3FF00000, &ccm->CCGR3);
	writel(0x00FFF300, &ccm->CCGR4);
	writel(0x0F0000C3, &ccm->CCGR5);
	writel(0x000003FF, &ccm->CCGR6);
	}

	static void gpr_init(void)
	{
	struct iomuxc iomux = (struct iomuxc )IOMUXC_BASE_ADDR;

	/* enable AXI cache for VDOA/VPU/IPU */
	writel(0xF00000CF, &iomux->gpr[4]);
	/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
	writel(0x007F007F, &iomux->gpr[6]);
	writel(0x007F007F, &iomux->gpr[7]);
	}

	/*
	* This section requires the differentiation between Solidrun mx6 boards, but
	* for now, it will configure only for the mx6dual hummingboard version.
	*/
	static void spl_dram_init(int width)
	{
	struct mx6_ddr_sysinfo sysinfo = {
	/* width of data bus: 0=16, 1=32, 2=64 */
	.dsize = width / 32,
	/* config for full 4GB range so that get_mem_size() works */
	.cs_density = 32, /* 32Gb per CS */
	.ncs = 1, /* single chip select */
	.cs1_mirror = 0,
	.rtt_wr = 1 /DDR3_RTT_60_OHM/, /* RTT_Wr = RZQ/4 */
	.rtt_nom = 1 /DDR3_RTT_60_OHM/, /* RTT_Nom = RZQ/4 */
	.walat = 1, /* Write additional latency */
	.ralat = 5, /* Read additional latency */
	.mif3_mode = 3, /* Command prediction working mode */
	.bi_on = 1, /* Bank interleaving enabled */
	.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
	.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
	};

	if (is_cpu_type(MXC_CPU_MX6D) \|\| is_cpu_type(MXC_CPU_MX6Q))
	mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
	else
	mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);

	if (is_cpu_type(MXC_CPU_MX6D))
	mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
	else if (is_cpu_type(MXC_CPU_MX6Q))
	mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
	else if (is_cpu_type(MXC_CPU_MX6DL))
	mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
	else if (is_cpu_type(MXC_CPU_MX6SOLO))
	mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
	}

	void board_init_f(ulong dummy)
	{
	/* setup AIPS and disable watchdog */
	arch_cpu_init();

	ccgr_init();
	gpr_init();

	/* iomux and setup of i2c */
	board_early_init_f();

	/* setup GP timer */
	timer_init();

	/* UART clocks enabled and gd valid - init serial console */
	preloader_console_init();

	/* DDR initialization */
	if (is_cpu_type(MXC_CPU_MX6SOLO))
	spl_dram_init(32);
	else
	spl_dram_init(64);

	/* Clear the BSS. */
	memset(__bss_start, 0, __bss_end - __bss_start);

	/* load/boot image from boot device */
	board_init_r(NULL, 0);
	}
	#endif