There are three SD/MMC sockets on mx6slevk boards. Implements the full support for them. The default boot socket is USDHC2, so the MMC environment is set to that device.
Signed-off-by: Ye.Li B37916@freescale.com --- Changes since v2: - Resolve the checkpatch warnings
Changes since v1: - Correct the return value of board_mmc_init function
board/freescale/mx6slevk/mx6slevk.c | 105 +++++++++++++++++++++++++++++++++-- include/configs/mx6slevk.h | 6 ++- 2 files changed, 104 insertions(+), 7 deletions(-)
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index a500133..e76c343 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -52,6 +52,23 @@ static iomux_v3_cfg_t const uart1_pads[] = { MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), };
+static iomux_v3_cfg_t const usdhc1_pads[] = { + /* 8 bit SD */ + 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), + MX6_PAD_SD1_DAT4__USDHC1_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT5__USDHC1_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT6__USDHC1_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT7__USDHC1_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + + /*CD pin*/ + MX6_PAD_KEY_ROW7__GPIO_4_7 | MUX_PAD_CTRL(NO_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), @@ -59,6 +76,21 @@ static iomux_v3_cfg_t const usdhc2_pads[] = { MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + + /*CD pin*/ + MX6_PAD_SD2_DAT7__GPIO_5_0 | 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), + MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + + /*CD pin*/ + MX6_PAD_REF_CLK_32K__GPIO_3_22 | MUX_PAD_CTRL(NO_PAD_CTRL), };
static iomux_v3_cfg_t const fec_pads[] = { @@ -109,21 +141,82 @@ static void setup_iomux_fec(void) gpio_set_value(ETH_PHY_RESET, 1); }
-static struct fsl_esdhc_cfg usdhc_cfg[1] = { - {USDHC2_BASE_ADDR}, +#define USDHC1_CD_GPIO IMX_GPIO_NR(4, 7) +#define USDHC2_CD_GPIO IMX_GPIO_NR(5, 0) +#define USDHC3_CD_GPIO IMX_GPIO_NR(3, 22) + +static struct fsl_esdhc_cfg usdhc_cfg[3] = { + {USDHC1_BASE_ADDR}, + {USDHC2_BASE_ADDR, 0, 4}, + {USDHC3_BASE_ADDR, 0, 4}, };
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 USDHC1_BASE_ADDR: + ret = !gpio_get_value(USDHC1_CD_GPIO); + break; + case USDHC2_BASE_ADDR: + ret = !gpio_get_value(USDHC2_CD_GPIO); + break; + case USDHC3_BASE_ADDR: + ret = !gpio_get_value(USDHC3_CD_GPIO); + break; + } + + return ret; }
int board_mmc_init(bd_t *bis) { - imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); + int i, ret; + + /* + * According to the board_mmc_init() the following map is done: + * (U-boot device node) (Physical Port) + * mmc0 USDHC1 + * mmc1 USDHC2 + * mmc2 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( + usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); + gpio_direction_input(USDHC2_CD_GPIO); + usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + break; + case 2: + imx_iomux_v3_setup_multiple_pads( + usdhc3_pads, ARRAY_SIZE(usdhc3_pads)); + gpio_direction_input(USDHC3_CD_GPIO); + usdhc_cfg[2].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 -EINVAL; + } + + ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + if (ret) { + printf("Warning: failed to initialize " + "mmc dev %d\n", i); + return ret; + } + }
- usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); - return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); + return 0; }
#ifdef CONFIG_FEC_MXC diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h index fddedf1..4fcaf51 100644 --- a/include/configs/mx6slevk.h +++ b/include/configs/mx6slevk.h @@ -190,7 +190,6 @@ #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 @@ -210,4 +209,9 @@ #define CONFIG_SF_DEFAULT_MODE SPI_MODE_0 #endif
+#define CONFIG_SYS_FSL_USDHC_NUM 3 +#if defined(CONFIG_ENV_IS_IN_MMC) +#define CONFIG_SYS_MMC_ENV_DEV 1 /* SDHC2*/ +#endif + #endif /* __CONFIG_H */