Thank you for your reply.
On 03/06/2014 03:58 PM, Minkyu Kang wrote:
On 05/03/14 10:57, Beomho Seo wrote:
Add DW MMC controller initialization. Selectively use DW MMC controller instead of SDHCI controller.
Signed-off-by: Beomho Seo beomho.seo@samsung.com Signed-off-by: Jaehoon Chung jh80.chung@samsung.com Cc: Minkyu Kang mk7.kang@samsung.com
board/samsung/trats2/trats2.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/board/samsung/trats2/trats2.c b/board/samsung/trats2/trats2.c index c17c24d..11bebb9 100644 --- a/board/samsung/trats2/trats2.c +++ b/board/samsung/trats2/trats2.c @@ -11,6 +11,7 @@ #include <asm/io.h> #include <asm/arch/gpio.h> #include <asm/arch/mmc.h> +#include <asm/arch/dwmmc.h> #include <asm/arch/power.h> #include <asm/arch/clk.h> #include <asm/arch/clock.h> @@ -280,18 +281,19 @@ int board_mmc_init(bd_t *bis)
gpio2 = (struct exynos4x12_gpio_part2 *)samsung_get_base_gpio_part2();
- /* eMMC_EN: SD_0_CDn: GPK0[2] Output High */
/* eMMC_EN: SD_0_CDn or SD_4_CDn: GPK0[2] Output High */ s5p_gpio_direction_output(&gpio2->k0, 2, 1); s5p_gpio_set_pull(&gpio2->k0, 2, GPIO_PULL_NONE);
/*
- eMMC GPIO:
- SDR 8-bit@48MHz at MMC0
* GPK0[0] SD_0_CLK(2)* GPK0[1] SD_0_CMD(2)* GPK0[2] SD_0_CDn -> Not used* GPK0[3:6] SD_0_DATA[0:3](2)* GPK1[3:6] SD_0_DATA[0:3](3)
* SDHCI DW-MMC* GPK0[0] SD_0_CLK(2) SD_4_CLK(3)* GPK0[1] SD_0_CMD(2) SD_4_CMD(3)* GPK0[2] SD_0_CDn SD_4_CDn -> Not used* GPK0[3:6] SD_0_DATA[0:3](2) SD_4_DATA[0:3](3)* GPK1[3:6] SD_0_DATA[4:7](3) SD_4_DATA[4:7](4)
- DDR 4-bit@26MHz at MMC4
- GPK0[0] SD_4_CLK(3)
@@ -301,17 +303,26 @@ int board_mmc_init(bd_t *bis) * GPK1[3:6] SD_4_DATA[4:7](4) */
- err0 = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE);
- /*
- MMC device init
* mmc0 : eMMC (8-bit buswidth)* mmc2 : SD card (4-bit buswidth)
* mmc0 : eMMC, sdhci controller (8-bit buswidth)* mmc2 : SD card, sdhci controller (4-bit buswidth)* mmc4 : eMMC, dw-mmc controller (8-bit buswidth)+#ifndef CONFIG_DWMMC
- err0 = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE); if (err0) debug("SDMMC0 not configured\n"); else err0 = s5p_mmc_init(0, 8);
+#else
- err0 = exynos_pinmux_config(PERIPH_ID_SDMMC4, PINMUX_FLAG_8BIT_MODE);
- if (err0)
debug("SDMMC4 not configured\n");- else
err0 = exynos_dwmci_add_port(4, 0x12550000, 8, 0x00010000);what means 0x12550000, 0x00010000?
Firstly, 0x12550000 is base address for mobile storage host(SDMMC4). 0x00010000 is value for set on CLKSEL register. I will revise more readable.
+#endif
/* T-flash detect */ s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
Thanks, Minkyu Kang.