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authorJaehoon Chung <jh80.chung@samsung.com>2013-01-29 19:31:16 +0000
committerTom Rini <trini@ti.com>2013-04-17 10:58:51 -0400
commit64f4a6192f0670de2d9af98900b750a3e7bf8ce6 (patch)
tree59af4410495640014040b626c9f9ccea219ca38b /drivers/mmc
parent22a4a6c5c2ea4c5998b98e6358b351848f2b765f (diff)
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mmc: support the correct card version for eMMC
eMMC vesrion is supported up to v4.5. But bootloader isn't saw the exact eMMC version. After applied this patch, if use the mmcinfo command, then can see the exactly mmc version. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Rommel Custodio <sessyargc@gmail.com>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/mmc.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index d732581..72b7254 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1054,6 +1054,24 @@ static int mmc_startup(struct mmc *mmc)
mmc->capacity = capacity;
}
+ switch (ext_csd[EXT_CSD_REV]) {
+ case 1:
+ mmc->version = MMC_VERSION_4_1;
+ break;
+ case 2:
+ mmc->version = MMC_VERSION_4_2;
+ break;
+ case 3:
+ mmc->version = MMC_VERSION_4_3;
+ break;
+ case 5:
+ mmc->version = MMC_VERSION_4_41;
+ break;
+ case 6:
+ mmc->version = MMC_VERSION_4_5;
+ break;
+ }
+
/*
* Check whether GROUP_DEF is set, if yes, read out
* group size from ext_csd directly, or calculate