mmc: check the revision for sd3.0
Support to check whether the SD3.0 or not.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Rommel Custodio <sessyargc@gmail.com>
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 72b7254..f65a7b0 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -784,6 +784,8 @@
break;
case 2:
mmc->version = SD_VERSION_2;
+ if ((mmc->scr[0] >> 15) & 0x1)
+ mmc->version = SD_VERSION_3;
break;
default:
mmc->version = SD_VERSION_1_0;
diff --git a/include/mmc.h b/include/mmc.h
index d5b3a9e..f0d4820 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -30,6 +30,7 @@
#include <linux/compiler.h>
#define SD_VERSION_SD 0x20000
+#define SD_VERSION_3 (SD_VERSION_SD | 0x300)
#define SD_VERSION_2 (SD_VERSION_SD | 0x200)
#define SD_VERSION_1_0 (SD_VERSION_SD | 0x100)
#define SD_VERSION_1_10 (SD_VERSION_SD | 0x10a)