This short patch correct corrupted data while reading NAND flash modules on the
KARO TX25 module.
The current version of the mxc_nand driver uses the symmetric mode to access
the NAND flash, but the devices populated on the KARO TX25 only support an
asymmetric mode (i.MX25: bit 8 within NAND_FLASH_CONFIG1 register cleared).
Signed-off-by: Daniel Gachet <daniel.gac...@hefr.ch>
Cc: Wolfgang Denk <w...@denx.de >
diff -upr drivers/mtd/nand/mxc_nand.c drivers/mtd/nand/mxc_nand.c
--- drivers/mtd/nand/mxc_nand.c 2011-12-23 20:25:35.000000000 +0100
+++ drivers/mtd/nand/mxc_nand.c 2012-03-30 08:10:13.000000000 +0200
@@ -1290,7 +1290,9 @@ static void mxc_setup_config1(void)
uint16_t tmp;
tmp = readw(&host->regs->nfc_config1);
+#ifndef MACH_TYPE_TX25
tmp |= NFC_ONE_CYCLE;
+#endif
tmp |= NFC_4_8N_ECC;
writew(tmp, &host->regs->nfc_config1);
if (host->pagesize_2k)
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