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Diffstat (limited to 'drivers/mtd/nand/nand_samsung.c')
-rw-r--r--drivers/mtd/nand/nand_samsung.c21
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/mtd/nand/nand_samsung.c b/drivers/mtd/nand/nand_samsung.c
index f6b0a63a068c..ef022f62f74c 100644
--- a/drivers/mtd/nand/nand_samsung.c
+++ b/drivers/mtd/nand/nand_samsung.c
@@ -92,10 +92,23 @@ 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;
+ if (nand_is_slc(chip)) {
+ switch (chip->id.data[1]) {
+ /* K9F4G08U0D-S[I|C]B0(T00) */
+ case 0xDC:
+ chip->ecc_step_ds = 512;
+ chip->ecc_strength_ds = 1;
+ break;
+
+ /* K9F1G08U0E 21nm chips do not support subpage write */
+ case 0xF1:
+ if (chip->id.len > 4 &&
+ (chip->id.data[4] & GENMASK(1, 0)) == 0x1)
+ chip->options |= NAND_NO_SUBPAGE_WRITE;
+ break;
+ default:
+ break;
+ }
}
}
}