mmc: at91_mci: avoid timeouts

The at91 mci controller internal state machine seems to often crash. This can
be fixed by resetting the controller after each command for at91rm9200 and by
setting the MCI_BLKR register on at91sam926*.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/at91_mci.h b/include/asm-arm/arch-at91/at91_mci.h
index 1551fc24eb43..400ec10014b4 100644
--- a/include/asm-arm/arch-at91/at91_mci.h
+++ b/include/asm-arm/arch-at91/at91_mci.h
@@ -75,6 +75,10 @@
 #define                 AT91_MCI_TRTYP_MULTIPLE (1 << 19)
 #define                 AT91_MCI_TRTYP_STREAM   (2 << 19)
 
+#define AT91_MCI_BLKR           0x18            /* Block Register */
+#define         AT91_MCI_BLKR_BCNT(n)   ((0xffff & (n)) << 0)   /* Block count */
+#define         AT91_MCI_BLKR_BLKLEN(n) ((0xffff & (n)) << 16)  /* Block lenght */
+
 #define AT91_MCI_RSPR(n)        (0x20 + ((n) * 4))      /* Response Registers 0-3 */
 #define AT91_MCR_RDR            0x30            /* Receive Data Register */
 #define AT91_MCR_TDR            0x34            /* Transmit Data Register */