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);
+#endif
/* T-flash detect */
s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
--
1.7.9.5
--
Best Regards,
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