diff options
| author | Otavio Salvador <otavio@ossystems.com.br> | 2013-04-19 03:42:01 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2013-04-25 21:34:02 +0200 |
| commit | 08f32f7d25511f6efcbcb7ee9768a1334d2a57d0 (patch) | |
| tree | 2c7b922ee99026651ecd5b614ca2ab44f42193f7 /board/wandboard | |
| parent | 0798d5785d3fe71f1e2b30dab908fc9a9b40e016 (diff) | |
wandboard: Add card detection for SOM MicroSD card
This add support to identify if the card is connected or not; so it
does not try to communicate with the controller if no card is
available.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Diffstat (limited to 'board/wandboard')
| -rw-r--r-- | board/wandboard/wandboard.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index ac7b89aaec1..8ec7eb955bb 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 USDHC3_CD_GPIO IMX_GPIO_NR(3, 9) #define ETH_PHY_RESET IMX_GPIO_NR(3, 29) int dram_init(void) @@ -59,6 +60,8 @@ static iomux_v3_cfg_t const usdhc3_pads[] = { 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), + /* SOM MicroSD Card Detect */ + MX6_PAD_EIM_DA9__GPIO_3_9 | MUX_PAD_CTRL(NO_PAD_CTRL), }; static iomux_v3_cfg_t const enet_pads[] = { @@ -100,12 +103,27 @@ static struct fsl_esdhc_cfg usdhc_cfg[1] = { {USDHC3_BASE_ADDR}, }; +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + int ret = 0; + + switch (cfg->esdhc_base) { + 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(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); return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); } |