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mmc: checking status after commands with R1b response

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It is recommended to check card status after these kind of commands.
This is done using CMD13 (SEND_STATUS) JEDEC command until
the card is ready.
In case of error the card status field is displayed.

Signed-off-by: Raffaele Recalcati <raffaele.recalcati@bticino.it>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Raffaele Recalcati
2011-03-11 02:01:12 +00:00
committed by Andy Fleming
parent 8baf939c2c
commit 5d4fc8d907
2 changed files with 63 additions and 3 deletions
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4
include/mmc.h
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@@ -97,6 +97,10 @@
#define OCR_BUSY 0x80000000
#define OCR_HCS 0x40000000
#define MMC_STATUS_MASK (~0x0206BF7F)
#define MMC_STATUS_RDY_FOR_DATA (1<<8)
#define MMC_STATUS_CURR_STATE (0xf<<9)
#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */