Rabin Vincent's fix for little endian systems fixes only the issues
regarding responses received on the command line.
However the SD card's SCR register is received on the DAT0 line
- therefore it must be handled in an endian independent way.
This is an addendum to "[PATCH 4/5] mmc: fix response decoding on little
endian" from rabin at rab.in.
Signed-off-by: Ulrich Herrmann <ulrich.herrm...@austriamicrosystems.com>
Index: include/mmc.h
===================================================================
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -45,7 +45,7 @@
#define MMC_MODE_4BIT 0x100
#define MMC_MODE_8BIT 0x200
-#define SD_DATA_4BIT 0x00040000
+#define SD_DATA_4BIT 0x04
#define IS_SD(x) (mmc->version & SD_VERSION_SD)
Index: drivers/mmc/mmc.c
===================================================================
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -490,7 +490,7 @@
mmc->scr[0] = scr[0];
mmc->scr[1] = scr[1];
- switch ((mmc->scr[0] >> 24) & 0xf) {
+ switch ((((char*)mmc->scr)[0]) & 0xf) {
case 0:
mmc->version = SD_VERSION_1_0;
break;
@@ -522,7 +522,7 @@
break;
}
- if (mmc->scr[0] & SD_DATA_4BIT)
+ if (((char*)mmc->scr)[1] & SD_DATA_4BIT)
mmc->card_caps |= MMC_MODE_4BIT;
/* If high-speed isn't supported, we return */
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