board/freescale/mx6slevk/mx6slevk.c - u-boot - Git at Google

 /*
  * Copyright (C) 2013 Freescale Semiconductor, Inc.
  *
  * Author: Fabio Estevam <fabio.estevam@freescale.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/mx6-pins.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
 #include <asm/imx-common/spi.h>
 #include <asm/io.h>
 #include <linux/sizes.h>
 #include <common.h>
 #include <fsl_esdhc.h>
 #include <mmc.h>
 #include <netdev.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_22K_UP |			\
 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

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

 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
 		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)

 #define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)

 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);

 	return 0;
 }

 static iomux_v3_cfg_t const uart1_pads[] = {
 	MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
 	MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
 };

 static iomux_v3_cfg_t const usdhc1_pads[] = {
 	/* 8 bit SD */
 	MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT4__USDHC1_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT5__USDHC1_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT6__USDHC1_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD1_DAT7__USDHC1_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

 	/*CD pin*/
 	MX6_PAD_KEY_ROW7__GPIO_4_7 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };

 static iomux_v3_cfg_t const usdhc2_pads[] = {
 	MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

 	/*CD pin*/
 	MX6_PAD_SD2_DAT7__GPIO_5_0 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };

 static iomux_v3_cfg_t const usdhc3_pads[] = {
 	MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

 	/*CD pin*/
 	MX6_PAD_REF_CLK_32K__GPIO_3_22 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };

 static iomux_v3_cfg_t const fec_pads[] = {
 	MX6_PAD_FEC_MDC__FEC_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_MDIO__FEC_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_CRS_DV__FEC_RX_DV | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_RXD0__FEC_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_RXD1__FEC_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_TX_EN__FEC_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_TXD0__FEC_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_TXD1__FEC_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_REF_CLK__FEC_REF_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL),
 	MX6_PAD_FEC_RX_ER__GPIO_4_19 | MUX_PAD_CTRL(NO_PAD_CTRL),
 	MX6_PAD_FEC_TX_CLK__GPIO_4_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };

 #ifdef CONFIG_MXC_SPI
 static iomux_v3_cfg_t ecspi1_pads[] = {
 	MX6_PAD_ECSPI1_MISO__ECSPI_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 	MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 	MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 	MX6_PAD_ECSPI1_SS0__GPIO4_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL),
 };

 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 {
 	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(4, 11)) : -1;
 }

 static void setup_spi(void)
 {
 	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
 }
 #endif

 static void setup_iomux_uart(void)
 {
 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 }

 static void setup_iomux_fec(void)
 {
 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));

 	/* Reset LAN8720 PHY */
 	gpio_direction_output(ETH_PHY_RESET , 0);
 	udelay(1000);
 	gpio_set_value(ETH_PHY_RESET, 1);
 }

 #define USDHC1_CD_GPIO	IMX_GPIO_NR(4, 7)
 #define USDHC2_CD_GPIO	IMX_GPIO_NR(5, 0)
 #define USDHC3_CD_GPIO	IMX_GPIO_NR(3, 22)

 static struct fsl_esdhc_cfg usdhc_cfg[3] = {
 	{USDHC1_BASE_ADDR},
 	{USDHC2_BASE_ADDR, 0, 4},
 	{USDHC3_BASE_ADDR, 0, 4},
 };

 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 USDHC1_BASE_ADDR:
 		ret = !gpio_get_value(USDHC1_CD_GPIO);
 		break;
 	case USDHC2_BASE_ADDR:
 		ret = !gpio_get_value(USDHC2_CD_GPIO);
 		break;
 	case USDHC3_BASE_ADDR:
 		ret = !gpio_get_value(USDHC3_CD_GPIO);
 		break;
 	}

 	return ret;
 }

 int board_mmc_init(bd_t *bis)
 {
 	int i, ret;

 	/*
 	 * According to the board_mmc_init() the following map is done:
 	 * (U-boot device node)    (Physical Port)
 	 * mmc0                    USDHC1
 	 * mmc1                    USDHC2
 	 * mmc2                    USDHC3
 	 */
 	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 		switch (i) {
 		case 0:
 			imx_iomux_v3_setup_multiple_pads(
 				usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
 			gpio_direction_input(USDHC1_CD_GPIO);
 			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 			break;
 		case 1:
 			imx_iomux_v3_setup_multiple_pads(
 				usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 			gpio_direction_input(USDHC2_CD_GPIO);
 			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 			break;
 		case 2:
 			imx_iomux_v3_setup_multiple_pads(
 				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 			gpio_direction_input(USDHC3_CD_GPIO);
 			usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 			break;
 		default:
 			printf("Warning: you configured more USDHC controllers"
 				"(%d) than supported by the board\n", i + 1);
 			return -EINVAL;
 			}

 			ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 			if (ret) {
 				printf("Warning: failed to initialize "
 					"mmc dev %d\n", i);
 				return ret;
 			}
 	}

 	return 0;
 }

 #ifdef CONFIG_FEC_MXC
 int board_eth_init(bd_t *bis)
 {
 	setup_iomux_fec();

 	return cpu_eth_init(bis);
 }

 static int setup_fec(void)
 {
 	struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;

 	/* clear gpr1[14], gpr1[18:17] to select anatop clock */
 	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0);

 	return enable_fec_anatop_clock(ENET_50MHZ);
 }
 #endif

 #ifdef CONFIG_USB_EHCI_MX6
 #define USB_OTHERREGS_OFFSET	0x800
 #define UCTRL_PWR_POL		(1 << 9)

 static iomux_v3_cfg_t const usb_otg_pads[] = {
 	/* OTG1 */
 	MX6_PAD_KEY_COL4__USB_USBOTG1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 	MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
 	/* OTG2 */
 	MX6_PAD_KEY_COL5__USB_USBOTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL)
 };

 static void setup_usb(void)
 {
 	imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
 					 ARRAY_SIZE(usb_otg_pads));
 }

 int board_usb_phy_mode(int port)
 {
 	if (port == 1)
 		return USB_INIT_HOST;
 	else
 		return usb_phy_mode(port);
 }

 int board_ehci_hcd_init(int port)
 {
 	u32 *usbnc_usb_ctrl;

 	if (port > 1)
 		return -EINVAL;

 	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
 				 port * 4);

 	/* Set Power polarity */
 	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);

 	return 0;
 }
 #endif

 int board_early_init_f(void)
 {
 	setup_iomux_uart();
 #ifdef CONFIG_MXC_SPI
 	setup_spi();
 #endif
 	return 0;
 }

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

 #ifdef	CONFIG_FEC_MXC
 	setup_fec();
 #endif

 #ifdef CONFIG_USB_EHCI_MX6
 	setup_usb();
 #endif

 	return 0;
 }

 int checkboard(void)
 {
 	puts("Board: MX6SLEVK\n");

 	return 0;
 }
	/*
	* Copyright (C) 2013 Freescale Semiconductor, Inc.
	*
	* Author: Fabio Estevam <fabio.estevam@freescale.com>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <asm/arch/clock.h>
	#include <asm/arch/iomux.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/mx6-pins.h>
	#include <asm/arch/sys_proto.h>
	#include <asm/gpio.h>
	#include <asm/imx-common/iomux-v3.h>
	#include <asm/imx-common/spi.h>
	#include <asm/io.h>
	#include <linux/sizes.h>
	#include <common.h>
	#include <fsl_esdhc.h>
	#include <mmc.h>
	#include <netdev.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_22K_UP \| \
	PAD_CTL_SPEED_LOW \| PAD_CTL_DSE_80ohm \| \
	PAD_CTL_SRE_FAST \| PAD_CTL_HYS)

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

	#define SPI_PAD_CTRL (PAD_CTL_HYS \| PAD_CTL_SPEED_MED \| \
	PAD_CTL_DSE_40ohm \| PAD_CTL_SRE_FAST)

	#define ETH_PHY_RESET IMX_GPIO_NR(4, 21)

	int dram_init(void)
	{
	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);

	return 0;
	}

	static iomux_v3_cfg_t const uart1_pads[] = {
	MX6_PAD_UART1_TXD__UART1_TXD \| MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_UART1_RXD__UART1_RXD \| MUX_PAD_CTRL(UART_PAD_CTRL),
	};

	static iomux_v3_cfg_t const usdhc1_pads[] = {
	/* 8 bit SD */
	MX6_PAD_SD1_CLK__USDHC1_CLK \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_CMD__USDHC1_CMD \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT0__USDHC1_DAT0 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT1__USDHC1_DAT1 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT2__USDHC1_DAT2 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT3__USDHC1_DAT3 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT4__USDHC1_DAT4 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT5__USDHC1_DAT5 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT6__USDHC1_DAT6 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT7__USDHC1_DAT7 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),

	/CD pin/
	MX6_PAD_KEY_ROW7__GPIO_4_7 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	};

	static iomux_v3_cfg_t const usdhc2_pads[] = {
	MX6_PAD_SD2_CLK__USDHC2_CLK \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_CMD__USDHC2_CMD \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT0__USDHC2_DAT0 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT1__USDHC2_DAT1 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT2__USDHC2_DAT2 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT3__USDHC2_DAT3 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),

	/CD pin/
	MX6_PAD_SD2_DAT7__GPIO_5_0 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	};

	static iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__USDHC3_CLK \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_CMD__USDHC3_CMD \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT0__USDHC3_DAT0 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT1__USDHC3_DAT1 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT2__USDHC3_DAT2 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT3__USDHC3_DAT3 \| MUX_PAD_CTRL(USDHC_PAD_CTRL),

	/CD pin/
	MX6_PAD_REF_CLK_32K__GPIO_3_22 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	};

	static iomux_v3_cfg_t const fec_pads[] = {
	MX6_PAD_FEC_MDC__FEC_MDC \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_MDIO__FEC_MDIO \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_CRS_DV__FEC_RX_DV \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_RXD0__FEC_RX_DATA0 \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_RXD1__FEC_RX_DATA1 \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_TX_EN__FEC_TX_EN \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_TXD0__FEC_TX_DATA0 \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_TXD1__FEC_TX_DATA1 \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_REF_CLK__FEC_REF_OUT \| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_FEC_RX_ER__GPIO_4_19 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_FEC_TX_CLK__GPIO_4_21 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	};

	#ifdef CONFIG_MXC_SPI
	static iomux_v3_cfg_t ecspi1_pads[] = {
	MX6_PAD_ECSPI1_MISO__ECSPI_MISO \| MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI \| MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK \| MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_SS0__GPIO4_IO11 \| MUX_PAD_CTRL(NO_PAD_CTRL),
	};

	int board_spi_cs_gpio(unsigned bus, unsigned cs)
	{
	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(4, 11)) : -1;
	}

	static void setup_spi(void)
	{
	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
	}
	#endif

	static void setup_iomux_uart(void)
	{
	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
	}

	static void setup_iomux_fec(void)
	{
	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));

	/* Reset LAN8720 PHY */
	gpio_direction_output(ETH_PHY_RESET , 0);
	udelay(1000);
	gpio_set_value(ETH_PHY_RESET, 1);
	}

	#define USDHC1_CD_GPIO IMX_GPIO_NR(4, 7)
	#define USDHC2_CD_GPIO IMX_GPIO_NR(5, 0)
	#define USDHC3_CD_GPIO IMX_GPIO_NR(3, 22)

	static struct fsl_esdhc_cfg usdhc_cfg[3] = {
	{USDHC1_BASE_ADDR},
	{USDHC2_BASE_ADDR, 0, 4},
	{USDHC3_BASE_ADDR, 0, 4},
	};

	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 USDHC1_BASE_ADDR:
	ret = !gpio_get_value(USDHC1_CD_GPIO);
	break;
	case USDHC2_BASE_ADDR:
	ret = !gpio_get_value(USDHC2_CD_GPIO);
	break;
	case USDHC3_BASE_ADDR:
	ret = !gpio_get_value(USDHC3_CD_GPIO);
	break;
	}

	return ret;
	}

	int board_mmc_init(bd_t *bis)
	{
	int i, ret;

	/*
	* According to the board_mmc_init() the following map is done:
	* (U-boot device node) (Physical Port)
	* mmc0 USDHC1
	* mmc1 USDHC2
	* mmc2 USDHC3
	*/
	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
	switch (i) {
	case 0:
	imx_iomux_v3_setup_multiple_pads(
	usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
	gpio_direction_input(USDHC1_CD_GPIO);
	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
	break;
	case 1:
	imx_iomux_v3_setup_multiple_pads(
	usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
	gpio_direction_input(USDHC2_CD_GPIO);
	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
	break;
	case 2:
	imx_iomux_v3_setup_multiple_pads(
	usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
	gpio_direction_input(USDHC3_CD_GPIO);
	usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
	break;
	default:
	printf("Warning: you configured more USDHC controllers"
	"(%d) than supported by the board\n", i + 1);
	return -EINVAL;
	}

	ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
	if (ret) {
	printf("Warning: failed to initialize "
	"mmc dev %d\n", i);
	return ret;
	}
	}

	return 0;
	}

	#ifdef CONFIG_FEC_MXC
	int board_eth_init(bd_t *bis)
	{
	setup_iomux_fec();

	return cpu_eth_init(bis);
	}

	static int setup_fec(void)
	{
	struct iomuxc iomuxc_regs = (struct iomuxc )IOMUXC_BASE_ADDR;

	/* clear gpr1[14], gpr1[18:17] to select anatop clock */
	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0);

	return enable_fec_anatop_clock(ENET_50MHZ);
	}
	#endif

	#ifdef CONFIG_USB_EHCI_MX6
	#define USB_OTHERREGS_OFFSET 0x800
	#define UCTRL_PWR_POL (1 << 9)

	static iomux_v3_cfg_t const usb_otg_pads[] = {
	/* OTG1 */
	MX6_PAD_KEY_COL4__USB_USBOTG1_PWR \| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID \| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* OTG2 */
	MX6_PAD_KEY_COL5__USB_USBOTG2_PWR \| MUX_PAD_CTRL(NO_PAD_CTRL)
	};

	static void setup_usb(void)
	{
	imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
	ARRAY_SIZE(usb_otg_pads));
	}

	int board_usb_phy_mode(int port)
	{
	if (port == 1)
	return USB_INIT_HOST;
	else
	return usb_phy_mode(port);
	}

	int board_ehci_hcd_init(int port)
	{
	u32 *usbnc_usb_ctrl;

	if (port > 1)
	return -EINVAL;

	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
	port * 4);

	/* Set Power polarity */
	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);

	return 0;
	}
	#endif

	int board_early_init_f(void)
	{
	setup_iomux_uart();
	#ifdef CONFIG_MXC_SPI
	setup_spi();
	#endif
	return 0;
	}

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

	#ifdef CONFIG_FEC_MXC
	setup_fec();
	#endif

	#ifdef CONFIG_USB_EHCI_MX6
	setup_usb();
	#endif

	return 0;
	}

	int checkboard(void)
	{
	puts("Board: MX6SLEVK\n");

	return 0;
	}