From: Tom Warren Date: Wed, 21 Sep 2011 12:40:07 +0000 (+0000) Subject: tegra2: Enable MMC for Seaboard X-Git-Tag: v2011.12-rc1~343^2~81 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ccf7988b9ace671085a7ae6e7317c6a378c4a309;p=oweals%2Fu-boot.git tegra2: Enable MMC for Seaboard This adds the required GPIO and pinmux configuration to make eMMC / SD work on Seaboard. Signed-off-by: Simon Glass Tested-by: Tom Warren --- diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c index 5ba7bda33f..d13537d166 100644 --- a/board/nvidia/common/board.c +++ b/board/nvidia/common/board.c @@ -160,6 +160,7 @@ int board_mmc_init(bd_t *bd) /* Enable clocks, muxes, etc. for SDMMC controllers */ clock_init_mmc(); pin_mux_mmc(); + gpio_config_mmc(); debug("board_mmc_init: init eMMC\n"); /* init dev 0, eMMC chip, with 4-bit bus */ @@ -171,18 +172,6 @@ int board_mmc_init(bd_t *bd) return 0; } - -/* this is a weak define that we are overriding */ -int board_mmc_getcd(u8 *cd, struct mmc *mmc) -{ - debug("board_mmc_getcd called\n"); - /* - * Hard-code CD presence for now. Need to add GPIO inputs - * for Seaboard & Harmony (& Kaen/Aebl/Wario?) - */ - *cd = 1; - return 0; -} #endif #ifdef CONFIG_BOARD_EARLY_INIT_F diff --git a/board/nvidia/common/board.h b/board/nvidia/common/board.h index d649eb763a..344e70283e 100644 --- a/board/nvidia/common/board.h +++ b/board/nvidia/common/board.h @@ -26,6 +26,7 @@ void tegra2_start(void); void gpio_config_uart(void); +void gpio_config_mmc(void); int tegra2_mmc_init(int dev_index, int bus_width); #endif /* BOARD_H */ diff --git a/board/nvidia/harmony/harmony.c b/board/nvidia/harmony/harmony.c index f1ab050899..cbb30d6301 100644 --- a/board/nvidia/harmony/harmony.c +++ b/board/nvidia/harmony/harmony.c @@ -24,6 +24,9 @@ #include #include #include +#ifdef CONFIG_TEGRA2_MMC +#include +#endif /* * Routine: gpio_config_uart @@ -32,3 +35,26 @@ void gpio_config_uart(void) { } + +#ifdef CONFIG_TEGRA2_MMC +/* + * Routine: gpio_config_mmc + * Description: Set GPIOs for SD card + */ +void gpio_config_mmc(void) +{ + /* Not implemented for now */ +} + +/* this is a weak define that we are overriding */ +int board_mmc_getcd(u8 *cd, struct mmc *mmc) +{ + debug("board_mmc_getcd called\n"); + /* + * Hard-code CD presence for now. Need to add GPIO inputs + * for Harmony + */ + *cd = 1; + return 0; +} +#endif diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c index 4b9a8f33e8..bc67d0f94c 100644 --- a/board/nvidia/seaboard/seaboard.c +++ b/board/nvidia/seaboard/seaboard.c @@ -24,7 +24,10 @@ #include #include #include -#include +#include +#ifdef CONFIG_TEGRA2_MMC +#include +#endif /* * Routine: gpio_config_uart @@ -50,3 +53,33 @@ void gpio_config_uart(void) val |= 1 << GPIO_BIT(gp); writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]); } + +#ifdef CONFIG_TEGRA2_MMC +/* + * Routine: gpio_config_mmc + * Description: Set GPIOs for SDMMC3 SDIO slot. + */ +void gpio_config_mmc(void) +{ + /* Set EN_VDDIO_SD (GPIO I6) */ + gpio_direction_output(GPIO_PI6, 1); + + /* Config pin as GPI for Card Detect (GPIO I5) */ + gpio_direction_input(GPIO_PI5); +} + +/* this is a weak define that we are overriding */ +int board_mmc_getcd(u8 *cd, struct mmc *mmc) +{ + debug("board_mmc_getcd called\n"); + *cd = 1; /* Assume card is inserted, or eMMC */ + + if (IS_SD(mmc)) { + /* Seaboard SDMMC3 = SDIO3_CD = GPIO_PI5 */ + if (gpio_get_value(GPIO_PI5)) + *cd = 0; + } + + return 0; +} +#endif diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c index a71785cd7c..9e741f223c 100644 --- a/drivers/mmc/tegra2_mmc.c +++ b/drivers/mmc/tegra2_mmc.c @@ -452,7 +452,7 @@ static int tegra2_mmc_initialize(int dev_index, int bus_width) mmc->host_caps = MMC_MODE_8BIT; else mmc->host_caps = MMC_MODE_4BIT; - mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; + mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC; /* * min freq is for card identification, and is the highest