From 02ad33aa3a84821c8d9a6c4f167f143f6248b084 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Thu, 2 Feb 2017 13:41:14 +0900 Subject: [PATCH] mmc: mmc-uclass: use the fixed devnum with alias node If there are alias nodes as "mmc", use the devnum as alias index number. This patch is for fixing a problem of Exynos4 series. Problem is the below thing. Current legacy mode: EXYNOS DWMMC: 0, SAMSUNG SDHCI: 1 After using DM: SAMSUNG SDHCI: 0, EXYNOS DWMMC: 1 Dev index is swapped. Then u-boot can't find the kernel image..because it is already set to 0 as mmcdev. If change from legacy to DM, also needs to touch all exynos4 config file. For using simply, just supporting the fixed devnum with alias node is better than it. Usage: alaise { .... mmc0 = &sdhci2; /* eMMC */ mmc1 = &sdhci1; /* SD */ ... } Signed-off-by: Jaehoon Chung Reviewed-by: Simon Glass --- drivers/mmc/mmc-uclass.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 2fe5d61e26..de7acb6826 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -13,6 +13,8 @@ #include #include "mmc_private.h" +DECLARE_GLOBAL_DATA_PTR; + #ifdef CONFIG_DM_MMC_OPS int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, struct mmc_data *data) @@ -192,10 +194,15 @@ int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) { struct blk_desc *bdesc; struct udevice *bdev; - int ret; + int ret, devnum = -1; + +#ifndef CONFIG_SPL_BUILD + /* Use the fixed index with aliase node's index */ + fdtdec_get_alias_seq(gd->fdt_blob, "mmc", dev->of_offset, &devnum); +#endif - ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, -1, 512, - 0, &bdev); + ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, + devnum, 512, 0, &bdev); if (ret) { debug("Cannot create block device\n"); return ret; -- 2.25.1