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>

diff --git a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h
index f52c7103840b93fa4383b819f105966d065dca90..a4134a0d094f9f5a0850cf0e604498821f8080d4 100644 (file)
--- a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h
+++ b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h
@@ -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),

diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c
index 8ec7eb955bb87b37c7bc6e60befdf873807762f6..2bf121c15b5360d4c50b3e34f04bb4adaffe08a3 100644 (file)
--- 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)

diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index 0dc328687b76a3674d4f24689da480a793305b9f..9898f55d6c2782049e901949918ef44ab682f5c2 100644 (file)
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -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