atmel_nand: Add 32 bit ecc support for sama5d2 chip
Also if minimum ecc requirment is bigger then what we support, then just
use our maxium pmecc support.
But it is not safe, so we'll output a warning about this.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 73fd403..7cc1de0 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -80,6 +80,7 @@
* 8-bits 13-bytes 14-bytes
* 12-bits 20-bytes 21-bytes
* 24-bits 39-bytes 42-bytes
+ * 32-bits 52-bytes 56-bytes
*/
static int pmecc_get_ecc_bytes(int cap, int sector_size)
{
@@ -638,6 +639,9 @@
case 24:
val = PMECC_CFG_BCH_ERR24;
break;
+ case 32:
+ val = PMECC_CFG_BCH_ERR32;
+ break;
}
if (host->pmecc_sector_size == 512)
@@ -723,7 +727,11 @@
else if (*cap <= 24)
host->pmecc_corr_cap = 24;
else
- return -EINVAL;
+#ifdef CONFIG_SAMA5D2
+ host->pmecc_corr_cap = 32;
+#else
+ host->pmecc_corr_cap = 24;
+#endif
}
if (host->pmecc_sector_size == 0) {
/* use the most fitable sector size (the near smaller one ) */