diff options
| author | Jaehoon Chung | 2017-02-02 13:41:14 +0900 |
|---|---|---|
| committer | Jaehoon Chung | 2017-02-09 20:37:05 +0900 |
| commit | 02ad33aa3a84821c8d9a6c4f167f143f6248b084 (patch) | |
| tree | 4cb06ddb9258f956ef41ec01c1a43ee2feb5622d | |
| parent | 22940af1219459ce08e96be4e5c328e57a322462 (diff) | |
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 <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/mmc/mmc-uclass.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 2fe5d61e263..de7acb68262 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -13,6 +13,8 @@ #include <dm/root.h> #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; |