RiOTboard and MarSBoard: add new boards support

RiOTboard is produced by Embest/Element 14 and is based on i.MX6 Solo
The following features are tested :
- UART2 (console)
- eMMC
- SDCard
- uSDCard
- Ethernet
- USB Host (through 4 ports hub)
- HDMI output
- I2C 1/2/3
- LVDS TFT with LCD8000-97C from Embest/Element 14

Boot on eMMC and through USB loader are tested.

For more informations on this board : http://www.riotboard.org/

MarSBoard is produced by Embest/Element 14 and is based on i.MX6 Dual
The following features are tested :
- UART2 (console)
- eMMC
- uSDCard
- Ethernet
- USB Host (through 2 ports hub)
- HDMI output
- I2C 1/2
- SPI NOR Flash
- LVDS TFT with LCD8000-97C from Embest/Element 14

Boot on SPI NOR and through USB loader are tested.

For more informations on this board :
http://www.embest-tech.com/shop/star/marsboard.html

Both boards are supported by the same code base as they are based on a
common trunk of schematics.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Stefano Babic <sbabic@denx.de>

2 files changed, 616 insertions, 0 deletions

diff --git a/board/embest/mx6boards/Makefile b/board/embest/mx6boards/Makefile
new file mode 100644
index 0000000..467fb50
--- /dev/null
+++ b/board/embest/mx6boards/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+#
+# (C) Copyright 2011 Freescale Semiconductor, Inc.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y  := mx6boards.o
diff --git a/board/embest/mx6boards/mx6boards.c b/board/embest/mx6boards/mx6boards.c
new file mode 100644
index 0000000..6d86961
--- /dev/null
+++ b/board/embest/mx6boards/mx6boards.c
@@ -0,0 +1,607 @@
+/*
+ * Copyright (C) 2014 Eukréa Electromatique
+ * Author: Eric Bénard <eric@eukrea.com>
+ *         Fabio Estevam <fabio.estevam@freescale.com>
+ *         Jon Nettleton <jon.nettleton@gmail.com>
+ *
+ * based on sabresd.c which is :
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ * and on hummingboard.c which is :
+ * Copyright (C) 2013 SolidRun ltd.
+ * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/boot_mode.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/imx-common/video.h>
+#include <i2c.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.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 USDHC_PAD_CLK_CTRL (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 I2C_PAD_CTRL	(PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
+	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
+		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+
+static int board_type = -1;
+#define BOARD_IS_MARSBOARD	0
+#define BOARD_IS_RIOTBOARD	1
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+	return 0;
+}
+
+static iomux_v3_cfg_t const uart2_pads[] = {
+	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
+}
+
+iomux_v3_cfg_t const enet_pads[] = {
+	MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	/* GPIO16 -> AR8035 25MHz */
+	MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
+	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK),
+	MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	/* AR8035 PHY Reset */
+	MX6_PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	/* AR8035 PHY Interrupt */
+	MX6_PAD_ENET_TX_EN__GPIO1_IO28 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+static void setup_iomux_enet(void)
+{
+	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
+
+	/* Reset AR8035 PHY */
+	gpio_direction_output(IMX_GPIO_NR(3, 31) , 0);
+	mdelay(2);
+	gpio_set_value(IMX_GPIO_NR(3, 31), 1);
+}
+
+int mx6_rgmii_rework(struct phy_device *phydev)
+{
+	/* from linux/arch/arm/mach-imx/mach-imx6q.c :
+	 * Ar803x phy SmartEEE feature cause link status generates glitch,
+	 * which cause ethernet link down/up issue, so disable SmartEEE
+	 */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x805d);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4003);
+
+	return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	mx6_rgmii_rework(phydev);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+iomux_v3_cfg_t const usdhc2_pads[] = {
+	MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
+	MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */
+	MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
+};
+
+iomux_v3_cfg_t const usdhc3_pads[] = {
+	MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
+	MX6_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+iomux_v3_cfg_t const riotboard_usdhc3_pads[] = {
+	MX6_PAD_SD3_DAT4__GPIO7_IO01 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */
+	MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
+};
+
+iomux_v3_cfg_t const usdhc4_pads[] = {
+	MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
+	MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	/* eMMC RST */
+	MX6_PAD_NANDF_ALE__GPIO6_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg usdhc_cfg[3] = {
+	{USDHC2_BASE_ADDR},
+	{USDHC3_BASE_ADDR},
+	{USDHC4_BASE_ADDR},
+};
+
+#define USDHC2_CD_GPIO	IMX_GPIO_NR(1, 4)
+#define USDHC3_CD_GPIO	IMX_GPIO_NR(7, 0)
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	int ret = 0;
+
+	switch (cfg->esdhc_base) {
+	case USDHC2_BASE_ADDR:
+		ret = !gpio_get_value(USDHC2_CD_GPIO);
+		break;
+	case USDHC3_BASE_ADDR:
+		if (board_type == BOARD_IS_RIOTBOARD)
+			ret = !gpio_get_value(USDHC3_CD_GPIO);
+		else if (board_type == BOARD_IS_MARSBOARD)
+			ret = 1; /* eMMC/uSDHC3 is always present */
+		break;
+	case USDHC4_BASE_ADDR:
+		ret = 1; /* eMMC/uSDHC4 is always present */
+		break;
+	}
+
+	return ret;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	s32 status = 0;
+	int i;
+
+	/*
+	 * According to the board_mmc_init() the following map is done:
+	 * (U-boot device node)    (Physical Port)
+	 * ** RiOTboard :
+	 * mmc0                    SDCard slot (bottom)
+	 * mmc1                    uSDCard slot (top)
+	 * mmc2                    eMMC
+	 * ** MarSBoard :
+	 * mmc0                    uSDCard slot (bottom)
+	 * mmc1                    eMMC
+	 */
+	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+		switch (i) {
+		case 0:
+			imx_iomux_v3_setup_multiple_pads(
+				usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
+			gpio_direction_input(USDHC2_CD_GPIO);
+			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+			usdhc_cfg[0].max_bus_width = 4;
+			break;
+		case 1:
+			imx_iomux_v3_setup_multiple_pads(
+				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
+			if (board_type == BOARD_IS_RIOTBOARD) {
+				imx_iomux_v3_setup_multiple_pads(
+					riotboard_usdhc3_pads,
+					ARRAY_SIZE(riotboard_usdhc3_pads));
+				gpio_direction_input(USDHC3_CD_GPIO);
+				gpio_direction_output(IMX_GPIO_NR(7, 8) , 0);
+				udelay(250);
+				gpio_set_value(IMX_GPIO_NR(7, 8), 1);
+			}
+			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+			usdhc_cfg[1].max_bus_width = 4;
+			break;
+		case 2:
+			imx_iomux_v3_setup_multiple_pads(
+				usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
+			usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+			usdhc_cfg[2].max_bus_width = 4;
+			gpio_direction_output(IMX_GPIO_NR(6, 8) , 0);
+			udelay(250);
+			gpio_set_value(IMX_GPIO_NR(6, 8), 1);
+			break;
+		default:
+			printf("Warning: you configured more USDHC controllers"
+			       "(%d) then supported by the board (%d)\n",
+			       i + 1, CONFIG_SYS_FSL_USDHC_NUM);
+			return status;
+		}
+
+		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+	}
+
+	return status;
+}
+#endif
+
+#ifdef CONFIG_MXC_SPI
+iomux_v3_cfg_t const ecspi1_pads[] = {
+	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_spi(void)
+{
+	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
+}
+#endif
+
+struct i2c_pads_info i2c_pad_info1 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_CSI0_DAT9__GPIO5_IO27
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(5, 27)
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_CSI0_DAT8__I2C1_SDA
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_CSI0_DAT8__GPIO5_IO26
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(5, 26)
+	}
+};
+
+struct i2c_pads_info i2c_pad_info2 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(4, 12)
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(4, 13)
+	}
+};
+
+struct i2c_pads_info i2c_pad_info3 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(1, 5)
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_GPIO_6__I2C3_SDA
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6_PAD_GPIO_6__GPIO1_IO06
+				| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(1, 6)
+	}
+};
+
+iomux_v3_cfg_t const tft_pads_riot[] = {
+	/* LCD_PWR_EN */
+	MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* TOUCH_INT */
+	MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* LED_PWR_EN */
+	MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* BL LEVEL */
+	MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+iomux_v3_cfg_t const tft_pads_mars[] = {
+	/* LCD_PWR_EN */
+	MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* TOUCH_INT */
+	MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* LED_PWR_EN */
+	MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* BL LEVEL (PWM4) */
+	MX6_PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+#if defined(CONFIG_VIDEO_IPUV3)
+
+static void enable_lvds(struct display_info_t const *dev)
+{
+	struct iomuxc *iomux = (struct iomuxc *)
+				IOMUXC_BASE_ADDR;
+	setbits_le32(&iomux->gpr[2],
+		     IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT);
+	/* set backlight level to ON */
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 1);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 1);
+}
+
+static void disable_lvds(struct display_info_t const *dev)
+{
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	/* set backlight level to OFF */
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
+
+	clrbits_le32(&iomux->gpr[2],
+		     IOMUXC_GPR2_LVDS_CH0_MODE_MASK);
+}
+
+static int detect_hdmi(struct display_info_t const *dev)
+{
+	struct hdmi_regs *hdmi	= (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
+	return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
+}
+
+static void do_enable_hdmi(struct display_info_t const *dev)
+{
+	disable_lvds(dev);
+	imx_enable_hdmi_phy();
+}
+
+static int detect_i2c(struct display_info_t const *dev)
+{
+	return (0 == i2c_set_bus_num(dev->bus)) &&
+		(0 == i2c_probe(dev->addr));
+}
+
+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",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 768,
+		.pixclock       = 15385,
+		.left_margin    = 220,
+		.right_margin   = 40,
+		.upper_margin   = 21,
+		.lower_margin   = 7,
+		.hsync_len      = 60,
+		.vsync_len      = 10,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} }, {
+	.bus	= 2,
+	.addr	= 0x1,
+	.pixfmt	= IPU_PIX_FMT_LVDS666,
+	.detect	= detect_i2c,
+	.enable	= enable_lvds,
+	.mode	= {
+		.name           = "LCD8000-97C",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 768,
+		.pixclock       = 15385,
+		.left_margin    = 100,
+		.right_margin   = 200,
+		.upper_margin   = 10,
+		.lower_margin   = 20,
+		.hsync_len      = 20,
+		.vsync_len      = 8,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} } };
+size_t display_count = ARRAY_SIZE(displays);
+
+static void setup_display(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	int reg;
+
+	enable_ipu_clock();
+	imx_setup_hdmi();
+
+	/* Turn on LDB0, IPU,IPU DI0 clocks */
+	setbits_le32(&mxc_ccm->CCGR3,
+		     MXC_CCM_CCGR3_LDB_DI0_MASK);
+
+	/* set LDB0 clk select to 011/011 */
+	clrsetbits_le32(&mxc_ccm->cs2cdr,
+			MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK,
+			(3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET));
+
+	setbits_le32(&mxc_ccm->cscmr2,
+		     MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
+
+	setbits_le32(&mxc_ccm->chsccdr,
+		     (CHSCCDR_CLK_SEL_LDB_DI0
+		     << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET));
+
+	reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
+	     | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
+	     | IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
+	     | IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
+	     | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
+	     | IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
+	     | IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
+	     | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
+	writel(reg, &iomux->gpr[2]);
+
+	clrsetbits_le32(&iomux->gpr[3],
+			IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
+			IOMUXC_GPR3_HDMI_MUX_CTL_MASK,
+			IOMUXC_GPR3_MUX_SRC_IPU1_DI0
+			<< IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
+}
+#endif /* CONFIG_VIDEO_IPUV3 */
+
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+	return 1;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	setup_iomux_enet();
+
+	return cpu_eth_init(bis);
+}
+
+int board_early_init_f(void)
+{
+	u32 cputype = cpu_type(get_cpu_rev());
+
+	switch (cputype) {
+	case MXC_CPU_MX6SOLO:
+		board_type = BOARD_IS_RIOTBOARD;
+		break;
+	case MXC_CPU_MX6D:
+		board_type = BOARD_IS_MARSBOARD;
+		break;
+	}
+
+	setup_iomux_uart();
+
+	if (board_type == BOARD_IS_RIOTBOARD)
+		imx_iomux_v3_setup_multiple_pads(
+			tft_pads_riot, ARRAY_SIZE(tft_pads_riot));
+	else if (board_type == BOARD_IS_MARSBOARD)
+		imx_iomux_v3_setup_multiple_pads(
+			tft_pads_mars, ARRAY_SIZE(tft_pads_mars));
+#if defined(CONFIG_VIDEO_IPUV3)
+	/* power ON LCD */
+	gpio_direction_output(IMX_GPIO_NR(1, 29) , 1);
+	/* touch interrupt is an input */
+	gpio_direction_input(IMX_GPIO_NR(6, 14));
+	/* power ON backlight */
+	gpio_direction_output(IMX_GPIO_NR(6, 15) , 1);
+	/* set backlight level to off */
+	if (board_type == BOARD_IS_RIOTBOARD)
+		gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
+	else if (board_type == BOARD_IS_MARSBOARD)
+		gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
+	setup_display();
+#endif
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+	/* i2c1 : PMIC, Audio codec on RiOT, Expansion connector on MarS */
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+	/* i2c2 : HDMI EDID */
+	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
+	/* i2c3 : LVDS, Expansion connector */
+	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3);
+#ifdef CONFIG_MXC_SPI
+	setup_spi();
+#endif
+	return 0;
+}
+
+#ifdef CONFIG_CMD_BMODE
+static const struct boot_mode riotboard_boot_modes[] = {
+	{"sd2",	 MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
+	{"sd3",	 MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+	{"emmc", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
+	{NULL,	 0},
+};
+static const struct boot_mode marsboard_boot_modes[] = {
+	{"sd2",	 MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
+	{"emmc", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+	{NULL,	 0},
+};
+#endif
+
+int board_late_init(void)
+{
+#ifdef CONFIG_CMD_BMODE
+	if (board_type == BOARD_IS_RIOTBOARD)
+		add_board_boot_modes(riotboard_boot_modes);
+	else if (board_type == BOARD_IS_RIOTBOARD)
+		add_board_boot_modes(marsboard_boot_modes);
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: ");
+	if (board_type == BOARD_IS_MARSBOARD)
+		puts("MarSBoard\n");
+	else if (board_type == BOARD_IS_RIOTBOARD)
+		puts("RIoTboard\n");
+	else
+		printf("unknown - cputype : %02x\n", cpu_type(get_cpu_rev()));
+
+	return 0;
+}