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....@samsung.com>
> Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
> Cc: Minkyu Kang <mk7.k...@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?
> +#endif
>
> /* T-flash detect */
> s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
>
Thanks,
Minkyu Kang.
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
