[U-Boot] [PATCH] mmc: support the correct card version for eMMC

Jaehoon Chung
2013-01-30T05:31:16Z

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>
---
common/cmd_mmc.c | 2 +-
drivers/mmc/mmc.c | 18 ++++++++++++++++++
include/mmc.h | 21 +++++++++++++--------
3 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index 7dacd51..9e8d293 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -106,7 +106,7 @@ static void print_mmcinfo(struct mmc *mmc)
printf("Rd Block Len: %d\n", mmc->read_bl_len);

printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
- (mmc->version >> 4) & 0xf, mmc->version & 0xf);
+ (mmc->version >> 8) & 0xf, mmc->version & 0xff);

printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
puts("Capacity: ");
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 72e8ce6..3b3317e 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1029,6 +1029,24 @@ 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
diff --git a/include/mmc.h b/include/mmc.h
index a13e2bd..d0ec744 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -30,16 +30,21 @@
#include <linux/compiler.h>

#define SD_VERSION_SD 0x20000
-#define SD_VERSION_2 (SD_VERSION_SD | 0x20)
-#define SD_VERSION_1_0 (SD_VERSION_SD | 0x10)
-#define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
+#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)
#define MMC_VERSION_MMC 0x10000
#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
-#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x12)
-#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x14)
-#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x22)
-#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x30)
-#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x40)
+#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x102)
+#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x104)
+#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x202)
+#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x300)
+#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x400)
+#define MMC_VERSION_4_1 (MMC_VERSION_MMC | 0x401)
+#define MMC_VERSION_4_2 (MMC_VERSION_MMC | 0x402)
+#define MMC_VERSION_4_3 (MMC_VERSION_MMC | 0x403)
+#define MMC_VERSION_4_41 (MMC_VERSION_MMC | 0x429)
+#define MMC_VERSION_4_5 (MMC_VERSION_MMC | 0x405)

#define MMC_MODE_HS 0x001
#define MMC_MODE_HS_52MHz 0x010
--
1.7.5.4