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MVEBUMMC : Speed up access time

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Get about 40x faster access on SHEEVAPLUG MMC
 Fix some SD type compatibility

 Changes in v3:
 - fix the HW_STATE (from linux mvsdio)
 - review delays and timeouts

 Changes in v2:
 - increase number of loops
 - remove initial delay

 Changes in v1:
 - review all loops, delays and timeouts

Signed-off-by: Gérald Kerma <drEagle@doukki.net>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
This commit is contained in:
Gerald Kerma
2014-12-13 21:35:32 +01:00
committed by Pantelis Antoniou
parent 2591fbdba3
commit 28d27b79e3
2 changed files with 32 additions and 17 deletions
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1
include/mvebu_mmc.h
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@ -79,6 +79,7 @@
#define CMD_INHIBIT (1 << 0)
#define CMD_TXACTIVE (1 << 8)
#define CMD_RXACTIVE (1 << 9)
#define CMD_FIFO_EMPTY (1 << 13)
#define CMD_AUTOCMD12ACTIVE (1 << 14)
#define CMD_BUS_BUSY (CMD_AUTOCMD12ACTIVE | \
CMD_RXACTIVE | \