diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index d388c7f6fec969aeddc7e7f02f1cc68f7abaf7a6..59eba5d2c68574fae787d36d2bd9e5ed29eb9f25 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3285,9 +3285,12 @@ static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
 			mtd->oobsize = 512;
 			break;
 		case 6:
-		default: /* Other cases are "reserved" (unknown) */
 			mtd->oobsize = 640;
 			break;
+		case 7:
+		default: /* Other cases are "reserved" (unknown) */
+			mtd->oobsize = 1024;
+			break;
 		}
 		extid >>= 2;
 		/* Calc blocksize */