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mx25pdk: Add esdhc support

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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>
This commit is contained in:
Fabio Estevam 2012-10-23 06:34:49 +00:00 committed by Stefano Babic
parent d6d94e7360
commit af2a4093cb
2 changed files with 68 additions and 1 deletions
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53
board/freescale/mx25pdk/mx25pdk.c
View File

@ -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");

16
include/configs/mx25pdk.h
View File

@ -22,6 +22,7 @@
#define CONFIG_MX25
#define CONFIG_SYS_HZ 1000
#define CONFIG_SYS_TEXT_BASE 0x81200000
#define CONFIG_MXC_GPIO
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
@ -65,9 +66,10 @@
/* No NOR flash present */
#define CONFIG_ENV_OFFSET (6 * 64 * 1024)
#define CONFIG_ENV_SIZE (8 * 1024)
#define CONFIG_ENV_IS_NOWHERE
#define CONFIG_SYS_NO_FLASH
#define CONFIG_ENV_IS_IN_MMC
#define CONFIG_SYS_MMC_ENV_DEV 0
/* U-Boot general configuration */
#define CONFIG_SYS_PROMPT "MX25PDK U-Boot > "
@ -85,6 +87,9 @@
/* U-Boot commands */
#include <config_cmd_default.h>
#define CONFIG_CMD_CACHE
#define CONFIG_CMD_MMC
#define CONFIG_CMD_EXT2
#define CONFIG_CMD_FAT
/* Ethernet */
#define CONFIG_FEC_MXC
@ -93,6 +98,15 @@
#define CONFIG_CMD_NET
#define CONFIG_ENV_OVERWRITE
/* ESDHC driver */
#define CONFIG_MMC
#define CONFIG_GENERIC_MMC
#define CONFIG_FSL_ESDHC
#define CONFIG_SYS_FSL_ESDHC_ADDR 0
#define CONFIG_SYS_FSL_ESDHC_NUM 1
#define CONFIG_DOS_PARTITION
#define CONFIG_BOOTDELAY 3
#define CONFIG_LOADADDR 0x81000000 /* loadaddr env var */