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| author | Fabio Estevam <fabio.estevam@freescale.com> | 2012-10-23 06:34:49 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2012-10-26 16:28:07 +0200 |
| commit | af2a4093cb141f9c5ea433c41ab06a528a7792a6 (patch) | |
| tree | c8d1d5645281c741c378e9561cf570d7497ecb00 /board/freescale | |
| parent | d6d94e73608c51ea9bdbd4c2012ebabefd9d1600 (diff) | |
| download | u-boot-imx-af2a4093cb141f9c5ea433c41ab06a528a7792a6.zip u-boot-imx-af2a4093cb141f9c5ea433c41ab06a528a7792a6.tar.gz u-boot-imx-af2a4093cb141f9c5ea433c41ab06a528a7792a6.tar.bz2 | |
mx25pdk: Add esdhc support
mx25pdk has a SD/MMC slot connected to esdhc1.
Add support for it and allow the environment variables to be saved into SD/MMC.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mx25pdk/mx25pdk.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/board/freescale/mx25pdk/mx25pdk.c b/board/freescale/mx25pdk/mx25pdk.c index 4a8352f..9bf2d48 100644 --- a/board/freescale/mx25pdk/mx25pdk.c +++ b/board/freescale/mx25pdk/mx25pdk.c @@ -19,12 +19,24 @@ #include <common.h> #include <asm/io.h> +#include <asm/gpio.h> #include <asm/arch/imx-regs.h> #include <asm/arch/imx25-pinmux.h> #include <asm/arch/sys_proto.h> +#include <asm/arch/clock.h> +#include <mmc.h> +#include <fsl_esdhc.h> + +#define CARD_DETECT IMX_GPIO_NR(2, 1) DECLARE_GLOBAL_DATA_PTR; +#ifdef CONFIG_FSL_ESDHC +struct fsl_esdhc_cfg esdhc_cfg[1] = { + {IMX_MMC_SDHC1_BASE}, +}; +#endif + int dram_init(void) { /* dram_init must store complete ramsize in gd->ram_size */ @@ -48,6 +60,47 @@ int board_init(void) return 0; } +#ifdef CONFIG_FSL_ESDHC +int board_mmc_getcd(struct mmc *mmc) +{ + struct iomuxc_mux_ctl *muxctl; + struct iomuxc_pad_ctl *padctl; + u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5); + + /* + * Set up the Card Detect pin. + * + * SD1_GPIO_CD: gpio2_1 is ALT 5 mode of pin A15 + * + */ + muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE; + padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE; + + writel(gpio_mux_mode, &muxctl->pad_a15); + writel(0x0, &padctl->pad_a15); + + gpio_direction_input(CARD_DETECT); + return !gpio_get_value(CARD_DETECT); +} + +int board_mmc_init(bd_t *bis) +{ + struct iomuxc_mux_ctl *muxctl; + u32 sdhc1_mux_mode = MX25_PIN_MUX_MODE(0) | MX25_PIN_MUX_SION; + + muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE; + writel(sdhc1_mux_mode, &muxctl->pad_sd1_cmd); + writel(sdhc1_mux_mode, &muxctl->pad_sd1_clk); + writel(sdhc1_mux_mode, &muxctl->pad_sd1_data0); + writel(sdhc1_mux_mode, &muxctl->pad_sd1_data1); + writel(sdhc1_mux_mode, &muxctl->pad_sd1_data2); + writel(sdhc1_mux_mode, &muxctl->pad_sd1_data3); + + esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK); + return fsl_esdhc_initialize(bis, &esdhc_cfg[0]); +} +#endif + int checkboard(void) { puts("Board: MX25PDK\n"); |