From: Miquel Raynal Date: Thu, 7 Dec 2017 09:33:58 +0000 (+0100) Subject: mtd: nand: samsung: add ECC requirements for K9F4G08U0D X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=707d81545dbc3d3ee4ae093fc600831eb97302e7;p=linux.git mtd: nand: samsung: add ECC requirements for K9F4G08U0D Samsung NAND chip K9F4G08U0D minimum ECC strength requirement is 1 bit per 512 bytes. As the chip is not ONFI nor JEDEC and because of the lack of these values, boards using it fail to probe the NAND controller driver. Fix this by setting up the default values. Signed-off-by: Miquel Raynal Signed-off-by: Boris Brezillon --- diff --git a/drivers/mtd/nand/nand_samsung.c b/drivers/mtd/nand/nand_samsung.c index d348f0129ae76..f6b0a63a068c7 100644 --- a/drivers/mtd/nand/nand_samsung.c +++ b/drivers/mtd/nand/nand_samsung.c @@ -91,6 +91,12 @@ static void samsung_nand_decode_id(struct nand_chip *chip) } } else { nand_decode_ext_id(chip); + + /* Datasheet values for SLC Samsung K9F4G08U0D-S[I|C]B0(T00) */ + if (nand_is_slc(chip) && chip->id.data[1] == 0xDC) { + chip->ecc_step_ds = 512; + chip->ecc_strength_ds = 1; + } } }