atmel_nand: Add 32 bit ecc support for sama5d2 chip

[oweals/u-boot.git] / drivers / mtd / nand / atmel_nand.c

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 73fd403886a92e18c2e14e5756c8a238b980c833..7cc1de03134c52fed826ce2e51336d6e986a33d3 100644 (file)
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -80,6 +80,7 @@ static struct nand_ecclayout atmel_pmecc_oobinfo;
  *                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 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd)
        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 @@ static int pmecc_choose_ecc(struct atmel_nand_host *host,
                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 ) */