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authorBrian Norris <norris@broadcom.com>2010-08-20 10:50:43 -0700
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-10-24 23:43:44 +0100
commit34c5bf6cc78e56537e0d508f5979f27ea8a64e31 (patch)
tree8fcd9a81d5317f92e3ac5268deee49e87b638a78 /drivers/mtd/nand/nand_base.c
parenteea116ed0497dc9c4a981b8c7017d758fc835ded (diff)
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mtd: nand: Samsung MLC - new OOB sizes
There are some additions to the detection scheme used by Samsung MLC NAND. These simple changes to support the 400- and 436-byte OOB are found in the following data sheet: Samsung K9GBG08U0M (p.40) Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
-rw-r--r--drivers/mtd/nand/nand_base.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 1ae953c4ecc..596ac848b46 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2859,7 +2859,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
/*
* Field definitions are in the following datasheets:
* Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
- * New style (6 byte ID): Samsung K9GAG08U0D (p.40)
+ * New style (6 byte ID): Samsung K9GBG08U0M (p.40)
*
* Check for wraparound + Samsung ID + nonzero 6th byte
* to decide what to do.
@@ -2872,7 +2872,20 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
mtd->writesize = 2048 << (extid & 0x03);
extid >>= 2;
/* Calc oobsize */
- mtd->oobsize = (extid & 0x03) == 0x01 ? 128 : 218;
+ switch (extid & 0x03) {
+ case 1:
+ mtd->oobsize = 128;
+ break;
+ case 2:
+ mtd->oobsize = 218;
+ break;
+ case 3:
+ mtd->oobsize = 400;
+ break;
+ default:
+ mtd->oobsize = 436;
+ break;
+ }
extid >>= 2;
/* Calc blocksize */
mtd->erasesize = (128 * 1024) <<