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>
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1 changed files with 15 additions and 2 deletions
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@ -2859,7 +2859,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
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/*
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* Field definitions are in the following datasheets:
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* Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
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* New style (6 byte ID): Samsung K9GAG08U0D (p.40)
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* New style (6 byte ID): Samsung K9GBG08U0M (p.40)
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*
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* Check for wraparound + Samsung ID + nonzero 6th byte
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* to decide what to do.
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@ -2872,7 +2872,20 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
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mtd->writesize = 2048 << (extid & 0x03);
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extid >>= 2;
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/* Calc oobsize */
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mtd->oobsize = (extid & 0x03) == 0x01 ? 128 : 218;
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switch (extid & 0x03) {
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case 1:
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mtd->oobsize = 128;
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break;
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case 2:
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mtd->oobsize = 218;
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break;
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case 3:
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mtd->oobsize = 400;
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break;
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default:
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mtd->oobsize = 436;
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break;
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}
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extid >>= 2;
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/* Calc blocksize */
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mtd->erasesize = (128 * 1024) <<
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