path: root/board/freescale/mx6qsabreauto/mx6qsabreauto.c

/*
 * Copyright (C) 2012-2014 Freescale Semiconductor, Inc.
 *
 * Author: Fabio Estevam <fabio.estevam@freescale.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.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/mxc_i2c.h>
#include <asm/imx-common/boot_mode.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/sys_proto.h>
#include <i2c.h>

#ifdef CONFIG_FASTBOOT
#include <fastboot.h>
#ifdef CONFIG_ANDROID_RECOVERY
#include <recovery.h>
#endif
#endif /*CONFIG_FASTBOOT*/

DECLARE_GLOBAL_DATA_PTR;

#define I2C_EXP_RST IMX_GPIO_NR(1, 15)
#define I2C3_STEER  IMX_GPIO_NR(5, 4)
#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)

/*Need more drive strength for SD1 slot on base board*/
#define USDHC1_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |            \
	PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |               \
	PAD_CTL_DSE_40ohm   | 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 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 PC MUX_PAD_CTRL(I2C_PAD_CTRL)

#define SPI_PAD_CTRL (PAD_CTL_HYS |				\
	PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED |		\
	PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)

int dram_init(void)
{
	gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);

	return 0;
}

iomux_v3_cfg_t const uart4_pads[] = {
	MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};

iomux_v3_cfg_t const enet_pads[] = {
	MX6_PAD_KEY_COL1__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_KEY_COL2__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_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),
	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	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),
};

/* I2C2 PMIC, iPod, Tuner, Codec, Touch, HDMI EDID, MIPI CSI2 card */
struct i2c_pads_info i2c_pad_info1 = {
	.scl = {
		.i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC,
		.gpio_mode = MX6_PAD_EIM_EB2__GPIO2_IO30 | PC,
		.gp = IMX_GPIO_NR(2, 30)
	},
	.sda = {
		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
		.gp = IMX_GPIO_NR(4, 13)
	}
};

/*
 * I2C3 MLB, Port Expanders (A, B, C), Video ADC, Light Sensor,
 * Compass Sensor, Accelerometer, Res Touch
 */
struct i2c_pads_info i2c_pad_info2 = {
	.scl = {
		.i2c_mode = MX6_PAD_GPIO_3__I2C3_SCL | PC,
		.gpio_mode = MX6_PAD_GPIO_3__GPIO1_IO03 | PC,
		.gp = IMX_GPIO_NR(1, 3)
	},
	.sda = {
		.i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
		.gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC,
		.gp = IMX_GPIO_NR(3, 18)
	}
};

iomux_v3_cfg_t const i2c3_pads[] = {
	MX6_PAD_EIM_A24__GPIO5_IO04		| MUX_PAD_CTRL(NO_PAD_CTRL),
};

iomux_v3_cfg_t const port_exp[] = {
	MX6_PAD_SD2_DAT0__GPIO1_IO15		| MUX_PAD_CTRL(NO_PAD_CTRL),
};

static void setup_iomux_enet(void)
{
	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
}

iomux_v3_cfg_t const usdhc1_pads[] = {
	/*To avoid pin conflict with NAND, set usdhc1 to 4 pins*/
	MX6_PAD_SD1_CLK__SD1_CLK	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),
	MX6_PAD_SD1_CMD__SD1_CMD	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),
	MX6_PAD_SD1_DAT0__SD1_DATA0	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),
	MX6_PAD_SD1_DAT1__SD1_DATA1	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),
	MX6_PAD_SD1_DAT2__SD1_DATA2	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),
	MX6_PAD_SD1_DAT3__SD1_DATA3	| MUX_PAD_CTRL(USDHC1_PAD_CTRL),

	/*CD pin*/
	MX6_PAD_GPIO_1__GPIO1_IO01 | MUX_PAD_CTRL(NO_PAD_CTRL),
};

iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__SD3_CLK	| MUX_PAD_CTRL(USDHC_PAD_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),
	MX6_PAD_SD3_DAT4__SD3_DATA4	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT5__SD3_DATA5	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT6__SD3_DATA6	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT7__SD3_DATA7	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_GPIO_18__SD3_VSELECT | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_NANDF_CS2__GPIO6_IO15   | MUX_PAD_CTRL(NO_PAD_CTRL),
};

#ifdef CONFIG_SYS_I2C_MXC
static int setup_pmic_voltages(void)
{
	unsigned char value, rev_id = 0 ;
	i2c_set_bus_num(1);
	if (!i2c_probe(0x8)) {
		if (i2c_read(0x8, 0, 1, &value, 1)) {
			printf("Read device ID error!\n");
			return -1;
		}
		if (i2c_read(0x8, 3, 1, &rev_id, 1)) {
			printf("Read Rev ID error!\n");
			return -1;
		}
		printf("Found PFUZE100! deviceid=%x,revid=%x\n", value, rev_id);
		/* set SW1AB staby volatage 0.975V*/
		if (i2c_read(0x8, 0x21, 1, &value, 1)) {
			printf("Read SW1ABSTBY error!\n");
			return -1;
		}
		value &= ~0x3f;
		value |= 0x1b;
		if (i2c_write(0x8, 0x21, 1, &value, 1)) {
			printf("Set SW1ABSTBY error!\n");
			return -1;
		}
		/* set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
		if (i2c_read(0x8, 0x24, 1, &value, 1)) {
			printf("Read SW1ABSTBY error!\n");
			return -1;
		}
		value &= ~0xc0;
		value |= 0x40;
		if (i2c_write(0x8, 0x24, 1, &value, 1)) {
			printf("Set SW1ABSTBY error!\n");
			return -1;
		}

		/* set SW1C staby volatage 0.975V*/
		if (i2c_read(0x8, 0x2f, 1, &value, 1)) {
			printf("Read SW1CSTBY error!\n");
			return -1;
		}
		value &= ~0x3f;
		value |= 0x1b;
		if (i2c_write(0x8, 0x2f, 1, &value, 1)) {
			printf("Set SW1CSTBY error!\n");
			return -1;
		}

		/* set SW1C/VDDSOC step ramp up time to from 16us to 4us/25mV */
		if (i2c_read(0x8, 0x32, 1, &value, 1)) {
			printf("Read SW1ABSTBY error!\n");
			return -1;
		}
		value &= ~0xc0;
		value |= 0x40;
		if (i2c_write(0x8, 0x32, 1, &value, 1)) {
			printf("Set SW1ABSTBY error!\n");
			return -1;
		}
	}

	return 0;
}

#ifdef CONFIG_LDO_BYPASS_CHECK
void ldo_mode_set(int ldo_bypass)
{
	unsigned char value;
	/* increase VDDARM/VDDSOC to support 1.2G chip */
	if (check_1_2G()) {
		ldo_bypass = 0;	/* ldo_enable on 1.2G chip */
		printf("1.2G chip, increase VDDARM_IN/VDDSOC_IN\n");
		/* increase VDDARM to 1.425V */
		if (i2c_read(0x8, 0x20, 1, &value, 1)) {
			printf("Read SW1AB error!\n");
			return;
		}
		value &= ~0x3f;
		value |= 0x2d;
		if (i2c_write(0x8, 0x20, 1, &value, 1)) {
			printf("Set SW1AB error!\n");
			return;
		}
		/* increase VDDSOC to 1.425V */
		if (i2c_read(0x8, 0x2e, 1, &value, 1)) {
			printf("Read SW1C error!\n");
			return;
		}
		value &= ~0x3f;
		value |= 0x2d;
		if (i2c_write(0x8, 0x2e, 1, &value, 1)) {
			printf("Set SW1C error!\n");
			return;
		}
	}
}
#endif
#endif

static void setup_iomux_uart(void)
{
	imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
}

#ifdef CONFIG_FSL_ESDHC

#define USDHC1_CD_GPIO	IMX_GPIO_NR(1, 1)
#define USDHC3_CD_GPIO	IMX_GPIO_NR(6, 15)

struct fsl_esdhc_cfg usdhc_cfg[2] = {
	{USDHC1_BASE_ADDR, 0, 4},
	{USDHC3_BASE_ADDR},
};

int mmc_get_env_devno(void)
{
	u32 soc_sbmr = readl(SRC_BASE_ADDR + 0x4);
	u32 dev_no;

	/* BOOT_CFG2[3] and BOOT_CFG2[4] */
	dev_no = (soc_sbmr & 0x00001800) >> 11;

	/* need ubstract 1 to map to the mmc3 device id
	 * see the comments in board_mmc_init function
	 */
	if (2 == dev_no)
		dev_no--;

	return dev_no;
}

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 USDHC3_BASE_ADDR:
		ret = !gpio_get_value(USDHC3_CD_GPIO);
		break;
	}

	return ret;
}

int board_mmc_init(bd_t *bis)
{
	int i;

	/*
	* According to the board_mmc_init() the following map is done:
	* (U-boot device node)    (Physical Port)
	* mmc0				USDHC1
	* mmc1				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(
				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
			gpio_direction_input(USDHC3_CD_GPIO);
			usdhc_cfg[1].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 0;
			}

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

	return 0;
}

void board_late_mmc_env_init(void)
{
	char cmd[32];
	u32 dev_no = mmc_get_env_devno();

	setenv_ulong("mmcdev", dev_no);

	sprintf(cmd, "mmc dev %d", dev_no);
	run_command(cmd, 0);
}

#endif

#ifdef CONFIG_SYS_USE_SPINOR
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_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
	/* Steer logic */
	MX6_PAD_EIM_A24__GPIO5_IO04  | MUX_PAD_CTRL(NO_PAD_CTRL),
};

void setup_spinor(void)
{
	imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
					 ARRAY_SIZE(ecspi1_pads));
	gpio_direction_output(IMX_GPIO_NR(5, 4), 0);
	gpio_direction_output(IMX_GPIO_NR(3, 19), 0);
}
#endif

int mx6_rgmii_rework(struct phy_device *phydev)
{
	unsigned short val;

	/* To enable AR8031 ouput a 125MHz clk from CLK_25M */
	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);

	val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
	val &= 0xffe3;
	val |= 0x18;
	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);

	/* introduce tx clock delay */
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
	val |= 0x0100;
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);

	return 0;
}

int board_phy_config(struct phy_device *phydev)
{
	mx6_rgmii_rework(phydev);

	if (phydev->drv->config)
		phydev->drv->config(phydev);

	return 0;
}

int board_eth_init(bd_t *bis)
{
	setup_iomux_enet();

	return cpu_eth_init(bis);
}

#define BOARD_REV_B  0x200
#define BOARD_REV_A  0x100

static int mx6sabre_rev(void)
{
	/*
	 * Get Board ID information from OCOTP_GP1[15:8]
	 * i.MX6Q ARD RevA: 0x01
	 * i.MX6Q ARD RevB: 0x02
	 */
	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
	struct fuse_bank *bank = &ocotp->bank[4];
	struct fuse_bank4_regs *fuse =
			(struct fuse_bank4_regs *)bank->fuse_regs;
	int reg = readl(&fuse->gp1);
	int ret;

	switch (reg >> 8 & 0x0F) {
	case 0x02:
		ret = BOARD_REV_B;
		break;
	case 0x01:
	default:
		ret = BOARD_REV_A;
		break;
	}

	return ret;
}

u32 get_board_rev(void)
{
	int rev = mx6sabre_rev();

	return (get_cpu_rev() & ~(0xF << 8)) | rev;
}

int board_early_init_f(void)
{
	setup_iomux_uart();

#ifdef CONFIG_SYS_USE_SPINOR
	setup_spinor();
#endif
	return 0;
}

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

	/* I2C 2 and 3 setup - I2C 3 hw mux with EIM */
	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
	/* I2C 3 Steer */
	gpio_direction_output(IMX_GPIO_NR(5, 4), 1);
	imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);

	gpio_direction_output(IMX_GPIO_NR(1, 15), 1);
	imx_iomux_v3_setup_multiple_pads(port_exp, ARRAY_SIZE(port_exp));

	return 0;
}

#ifdef CONFIG_CMD_BMODE
static const struct boot_mode board_boot_modes[] = {
	/* 4 bit bus width */
	{"mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
	{NULL,   0},
};
#endif

int board_late_init(void)
{
	int ret;
#ifdef CONFIG_CMD_BMODE
	add_board_boot_modes(board_boot_modes);
#endif

#ifdef CONFIG_SYS_I2C_MXC
	setup_i2c(1, CONFIG_SYS_I2C_SPEED,
			CONFIG_SYS_I2C_SLAVE, &i2c_pad_info1);
	ret = setup_pmic_voltages();
	if (ret)
		return -1;
#endif

#ifdef CONFIG_ENV_IS_IN_MMC
	board_late_mmc_env_init();
#endif

	return 0;
}

#ifdef CONFIG_FASTBOOT

void board_fastboot_setup(void)
{
	switch (get_boot_device()) {
#if defined(CONFIG_FASTBOOT_STORAGE_SATA)
	case SATA_BOOT:
		if (!getenv("fastboot_dev"))
			setenv("fastboot_dev", "sata");
		if (!getenv("bootcmd"))
			setenv("bootcmd", "booti sata");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_SATA*/
#if defined(CONFIG_FASTBOOT_STORAGE_MMC)
	case SD1_BOOT:
	case MMC1_BOOT:
		if (!getenv("fastboot_dev"))
			setenv("fastboot_dev", "mmc0");
		if (!getenv("bootcmd"))
			setenv("bootcmd", "booti mmc0");
		break;
	case SD3_BOOT:
	case MMC3_BOOT:
		if (!getenv("fastboot_dev"))
			setenv("fastboot_dev", "mmc1");
		if (!getenv("bootcmd"))
			setenv("bootcmd", "booti mmc1");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_MMC*/
#if defined(CONFIG_FASTBOOT_STORAGE_NAND)
	case NAND_BOOT:
		if (!getenv("fastboot_dev"))
			setenv("fastboot_dev", "nand");
		if (!getenv("fbparts"))
			setenv("fbparts",
			 "16m@16m(boot) 128m@32m(recovery) 810m@160m(android_root)ubifs");
		if (!getenv("bootcmd"))
			setenv("bootcmd",
				"nand read ${loadaddr} ${boot_nand_offset} "
				"${boot_nand_size};booti ${loadaddr}");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_NAND*/
	default:
		printf("unsupported boot devices\n");
		break;
	}
}

#ifdef CONFIG_ANDROID_RECOVERY

#define GPIO_VOL_DN_KEY IMX_GPIO_NR(5, 14)
iomux_v3_cfg_t const recovery_key_pads[] = {
	(MX6_PAD_DISP0_DAT20__GPIO_5_14 | MUX_PAD_CTRL(NO_PAD_CTRL)),
};

int check_recovery_cmd_file(void)
{
	int button_pressed = 0;
	int recovery_mode = 0;

	recovery_mode = recovery_check_and_clean_flag();

	/* Check Recovery Combo Button press or not. */
	imx_iomux_v3_setup_multiple_pads(recovery_key_pads,
		ARRAY_SIZE(recovery_key_pads));

	gpio_direction_input(GPIO_VOL_DN_KEY);

	if (gpio_get_value(GPIO_VOL_DN_KEY) == 0) { /* VOL_DN key is low assert */
		button_pressed = 1;
		printf("Recovery key pressed\n");
	}

	return recovery_mode || button_pressed;
}

void board_recovery_setup(void)
{
	int bootdev = get_boot_device();

	switch (bootdev) {
#if defined(CONFIG_FASTBOOT_STORAGE_SATA)
	case SATA_BOOT:
		if (!getenv("bootcmd_android_recovery"))
			setenv("bootcmd_android_recovery", "booti sata recovery");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_SATA*/
#if defined(CONFIG_FASTBOOT_STORAGE_MMC)
	case SD1_BOOT:
	case MMC1_BOOT:
		if (!getenv("bootcmd_android_recovery"))
			setenv("bootcmd_android_recovery", "booti mmc0 recovery");
		break;
	case SD3_BOOT:
	case MMC3_BOOT:
		if (!getenv("bootcmd_android_recovery"))
			setenv("bootcmd_android_recovery", "booti mmc1 recovery");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_MMC*/
#if defined(CONFIG_FASTBOOT_STORAGE_NAND)
	case NAND_BOOT:
		if (!getenv("bootcmd_android_recovery"))
			setenv("bootcmd_android_recovery",
				"nand read ${loadaddr} ${recovery_nand_offset} "
				"${recovery_nand_size};booti ${loadaddr}");
		break;
#endif /*CONFIG_FASTBOOT_STORAGE_NAND*/
	default:
		printf("Unsupported bootup device for recovery: dev: %d\n",
			bootdev);
		return;
	}

	printf("setup env for recovery..\n");
	setenv("bootcmd", "run bootcmd_android_recovery");
}
#endif /*CONFIG_ANDROID_RECOVERY*/

#endif /*CONFIG_FASTBOOT*/

int checkboard(void)
{
	int rev = mx6sabre_rev();
	char *revname;

	switch (rev) {
	case BOARD_REV_B:
		revname = "B";
		break;
	case BOARD_REV_A:
	default:
		revname = "A";
		break;
	}

	printf("Board: MX6-Sabreauto rev%s\n", revname);

	return 0;
}

#ifdef CONFIG_IMX_UDC
iomux_v3_cfg_t const otg_udc_pads[] = {
	(MX6_PAD_ENET_RX_ER__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
void udc_pins_setting(void)
{
	imx_iomux_v3_setup_multiple_pads(otg_udc_pads,
		ARRAY_SIZE(otg_udc_pads));

	/*set daisy chain for otg_pin_id on 6q. for 6dl, this bit is reserved*/
    mxc_iomux_set_gpr_register(1, 13, 1, 0);
}

#endif /*CONFIG_IMX_UDC*/