Add full support for USDHC2, USDHC3, USDHC4 on mx6sx sabresd board.
The default boot socket is USDHC4, so the MMC environment is set to
this device.
Signed-off-by: Ye.Li <b37...@freescale.com>
---
Changes since v1:
- Modify the function return value
board/freescale/mx6sxsabresd/mx6sxsabresd.c | 99 +++++++++++++++++++++++++--
include/configs/mx6sxsabresd.h | 6 ++-
2 files changed, 99 insertions(+), 6 deletions(-)
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 68d3718..f799998 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -68,6 +68,34 @@ static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_GPIO1_IO05__UART1_RX | MUX_PAD_CTRL(UART_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_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_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_DATA0__USDHC3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA1__USDHC3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA2__USDHC3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA3__USDHC3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA4__USDHC3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA5__USDHC3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA6__USDHC3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD3_DATA7__USDHC3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+
+ /* CD pin */
+ MX6_PAD_KEY_COL0__GPIO2_IO_10 | MUX_PAD_CTRL(NO_PAD_CTRL),
+
+ /* RST_B, used for power reset cycle */
+ MX6_PAD_KEY_COL1__GPIO2_IO_11 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
static iomux_v3_cfg_t const usdhc4_pads[] = {
MX6_PAD_SD4_CLK__USDHC4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD4_CMD__USDHC4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
@@ -255,23 +283,84 @@ int board_early_init_f(void)
return 0;
}
-static struct fsl_esdhc_cfg usdhc_cfg[1] = {
+static struct fsl_esdhc_cfg usdhc_cfg[3] = {
+ {USDHC2_BASE_ADDR, 0, 4},
+ {USDHC3_BASE_ADDR},
{USDHC4_BASE_ADDR},
};
+#define USDHC3_CD_GPIO IMX_GPIO_NR(2, 10)
+#define USDHC3_PWR_GPIO IMX_GPIO_NR(2, 11)
+#define USDHC4_CD_GPIO IMX_GPIO_NR(6, 21)
+
int board_mmc_getcd(struct mmc *mmc)
{
- return 1; /* Assume boot SD always present */
+ struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+ int ret = 0;
+
+ switch (cfg->esdhc_base) {
+ case USDHC2_BASE_ADDR:
+ ret = 1; /* Assume uSDHC2 is always present */
+ break;
+ case USDHC3_BASE_ADDR:
+ ret = !gpio_get_value(USDHC3_CD_GPIO);
+ break;
+ case USDHC4_BASE_ADDR:
+ ret = !gpio_get_value(USDHC4_CD_GPIO);
+ break;
+ }
+
+ return ret;
}
int board_mmc_init(bd_t *bis)
{
- imx_iomux_v3_setup_multiple_pads(usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
+ int i, ret;
- usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
- return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+ /*
+ * According to the board_mmc_init() the following map is done:
+ * (U-boot device node) (Physical Port)
+ * mmc0 USDHC2
+ * mmc1 USDHC3
+ * mmc2 USDHC4
+ */
+ for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+ switch (i) {
+ case 0:
+ imx_iomux_v3_setup_multiple_pads(
+ usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
+ usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+ break;
+ case 1:
+ imx_iomux_v3_setup_multiple_pads(
+ usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
+ gpio_direction_input(USDHC3_CD_GPIO);
+ gpio_direction_output(USDHC3_PWR_GPIO, 1);
+ usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+ break;
+ case 2:
+ imx_iomux_v3_setup_multiple_pads(
+ usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
+ gpio_direction_input(USDHC4_CD_GPIO);
+ usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC4_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;
}
+
int board_init(void)
{
/* Address of boot parameters */
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index e02ea18..5bbc8da 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -214,7 +214,6 @@
#define CONFIG_ENV_OFFSET (6 * SZ_64K)
#define CONFIG_ENV_SIZE SZ_8K
#define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_SYS_MMC_ENV_DEV 0
#define CONFIG_OF_LIBFDT
#define CONFIG_CMD_BOOTZ
@@ -223,4 +222,9 @@
#define CONFIG_CMD_CACHE
#endif
+#define CONFIG_SYS_FSL_USDHC_NUM 3
+#if defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_SYS_MMC_ENV_DEV 2 /*USDHC4*/
+#endif
+
#endif /* __CONFIG_H */
--
1.7.4.1
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
