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authorOtavio Salvador <otavio@ossystems.com.br>2013-04-19 03:42:02 +0000
committerStefano Babic <sbabic@denx.de>2013-04-25 21:34:28 +0200
commit5ed15738d915b75b6a2bd9c3095005481c4df3d1 (patch)
treec3670c269b703e9c793aebd73a5186bf9d01ac27 /board/wandboard/wandboard.c
parent08f32f7d25511f6efcbcb7ee9768a1334d2a57d0 (diff)
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wandboard: Add support for Carrier Board MicroSD card
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>
Diffstat (limited to 'board/wandboard/wandboard.c')
-rw-r--r--board/wandboard/wandboard.c59
1 files changed, 52 insertions, 7 deletions
diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c
index 8ec7eb9..2bf121c 100644
--- a/board/wandboard/wandboard.c
+++ b/board/wandboard/wandboard.c
@@ -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));
-
- usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
- usdhc_cfg[0].max_bus_width = 4;
- gpio_direction_input(USDHC3_CD_GPIO);
+ s32 status = 0;
+ u32 index = 0;
+
+ /*
+ * 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;
+ }
+
+ status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+ }
- return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+ return status;
}
static int mx6_rgmii_rework(struct phy_device *phydev)