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wandboard: Add support for Carrier Board MicroSD card

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Allow use of the carrier board MicroSD card available in the
Wandboard; this allow for loading alternative system from the other
card for testing or upgrade proposes.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Otavio Salvador 2013-04-19 03:42:02 +00:00 committed by Stefano Babic
parent 08f32f7d25
commit 5ed15738d9
3 changed files with 59 additions and 6 deletions
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7
arch/arm/include/asm/arch-mx6/mx6dl_pins.h
View file

@ -76,6 +76,7 @@ enum {
MX6_PAD_GPIO_17__GPIO_7_12 = IOMUX_PAD(0x05E8, 0x0218, 5, 0x0000, 0, 0),
MX6_PAD_GPIO_18__GPIO_7_13 = IOMUX_PAD(0x05EC, 0x021C, 5, 0x0000, 0, 0),
MX6_PAD_GPIO_19__GPIO_4_5 = IOMUX_PAD(0x05F0, 0x0220, 5, 0x0000, 0, 0),
MX6_PAD_GPIO_2__GPIO_1_2 = IOMUX_PAD(0x05F4, 0x0224, 5, 0x0000, 0, 0),
MX6_PAD_GPIO_5__GPIO_1_5 = IOMUX_PAD(0x0600, 0x0230, 5, 0x0000, 0, 0),
MX6_PAD_GPIO_5__I2C3_SCL = IOMUX_PAD(0x0600, 0x0230, 6 | IOMUX_CONFIG_SION, 0x0878, 2, 0),
MX6_PAD_KEY_COL3__I2C2_SCL = IOMUX_PAD(0x0638, 0x0250, 4 | IOMUX_CONFIG_SION, 0x0870, 1, 0),
@ -108,8 +109,14 @@ enum {
MX6_PAD_RGMII_TD3__ENET_RGMII_TD3 = IOMUX_PAD(0x06B8, 0x02D0, 1, 0x0000, 0, 0),
MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL = IOMUX_PAD(0x06BC, 0x02D4, 1, 0x0000, 0, 0),
MX6_PAD_RGMII_TXC__ENET_RGMII_TXC = IOMUX_PAD(0x06C0, 0x02D8, 1, 0x0000, 0, 0),
MX6_PAD_SD1_CLK__USDHC1_CLK = IOMUX_PAD(0x06C4, 0x02DC, 0, 0x0928, 1, 0),
MX6_PAD_SD1_CMD__USDHC1_CMD = IOMUX_PAD(0x06C8, 0x02E0, 0 | IOMUX_CONFIG_SION, 0x0000, 0, 0),
MX6_PAD_SD1_CMD__GPIO_1_18 = IOMUX_PAD(0x06C8, 0x02E0, 5, 0x0000, 0, 0),
MX6_PAD_SD1_DAT3__GPIO_1_21 = IOMUX_PAD(0x06D8, 0x02F0, 5, 0x0000, 0, 0),
MX6_PAD_SD1_DAT0__USDHC1_DAT0 = IOMUX_PAD(0x06CC, 0x02E4, 0, 0x0000, 0, 0),
MX6_PAD_SD1_DAT1__USDHC1_DAT1 = IOMUX_PAD(0x06D0, 0x02E8, 0, 0x0000, 0, 0),
MX6_PAD_SD1_DAT2__USDHC1_DAT2 = IOMUX_PAD(0x06D4, 0x02EC, 0, 0x0000, 0, 0),
MX6_PAD_SD1_DAT3__USDHC1_DAT3 = IOMUX_PAD(0x06D8, 0x02F0, 0, 0x0000, 0, 0),
MX6_PAD_SD3_CLK__USDHC3_CLK = IOMUX_PAD(0x06F4, 0x030C, 0, 0x0934, 1, 0),
MX6_PAD_SD3_CMD__USDHC3_CMD = IOMUX_PAD(0x06F8, 0x0310, 0 | IOMUX_CONFIG_SION, 0x0000, 0, 0),
MX6_PAD_SD3_DAT0__USDHC3_DAT0 = IOMUX_PAD(0x06FC, 0x0314, 0, 0x0000, 0, 0),

57
board/wandboard/wandboard.c
View file

@ -38,6 +38,7 @@ DECLARE_GLOBAL_DATA_PTR;
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define USDHC1_CD_GPIO IMX_GPIO_NR(1, 2)
#define USDHC3_CD_GPIO IMX_GPIO_NR(3, 9)
#define ETH_PHY_RESET IMX_GPIO_NR(3, 29)
@ -53,6 +54,17 @@ static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_CSI0_DAT11__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
};
iomux_v3_cfg_t const usdhc1_pads[] = {
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),
/* Carrier MicroSD Card Detect */
MX6_PAD_GPIO_2__GPIO_1_2 | 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),
@ -99,8 +111,9 @@ static void setup_iomux_enet(void)
gpio_set_value(ETH_PHY_RESET, 1);
}
static struct fsl_esdhc_cfg usdhc_cfg[1] = {
static struct fsl_esdhc_cfg usdhc_cfg[2] = {
{USDHC3_BASE_ADDR},
{USDHC1_BASE_ADDR},
};
int board_mmc_getcd(struct mmc *mmc)
@ -109,6 +122,9 @@ int board_mmc_getcd(struct mmc *mmc)
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;
@ -119,13 +135,42 @@ int board_mmc_getcd(struct mmc *mmc)
int board_mmc_init(bd_t *bis)
{
imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
s32 status = 0;
u32 index = 0;
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
usdhc_cfg[0].max_bus_width = 4;
gpio_direction_input(USDHC3_CD_GPIO);
/*
* Following map is done:
* (U-boot device node) (Physical Port)
* mmc0 SOM MicroSD
* mmc1 Carrier board MicroSD
*/
for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
switch (index) {
case 0:
imx_iomux_v3_setup_multiple_pads(
usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
usdhc_cfg[0].max_bus_width = 4;
gpio_direction_input(USDHC3_CD_GPIO);
break;
case 1:
imx_iomux_v3_setup_multiple_pads(
usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
usdhc_cfg[1].max_bus_width = 4;
gpio_direction_input(USDHC1_CD_GPIO);
break;
default:
printf("Warning: you configured more USDHC controllers"
"(%d) then supported by the board (%d)\n",
index + 1, CONFIG_SYS_FSL_USDHC_NUM);
return status;
}
return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
}
return status;
}
static int mx6_rgmii_rework(struct phy_device *phydev)

1
include/configs/wandboard.h
View file

@ -59,6 +59,7 @@
/* MMC Configuration */
#define CONFIG_FSL_ESDHC
#define CONFIG_FSL_USDHC
#define CONFIG_SYS_FSL_USDHC_NUM 2
#define CONFIG_SYS_FSL_ESDHC_ADDR 0
#define CONFIG_MMC