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mtd: spinand: winbond: Fix oob_layout for W25N01JW

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Fix the W25N01JW's oob_layout according to the datasheet [1]

[1] https://www.winbond.com/hq/product/code-storage-flash-memory/qspinand-flash/?__locale=en&partNo=W25N01JW

Fixes: 6a804fb72d ("mtd: spinand: winbond: add support for serial NAND flash")
Cc: Sridharan S N <quic_sridsn@quicinc.com>
Cc: stable@vger.kernel.org
Signed-off-by: Santhosh Kumar K <s-k6@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Santhosh Kumar K 2025-09-04 18:47:41 +05:30 • committed by Miquel Raynal
parent fd779eac2d
commit 4550d33e18
1 changed files with 36 additions and 1 deletions
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37
drivers/mtd/nand/spi/winbond.c
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@ -176,6 +176,36 @@ static const struct mtd_ooblayout_ops w25n02kv_ooblayout = {
.free = w25n02kv_ooblayout_free,
};
static int w25n01jw_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section > 3)
return -ERANGE;
region->offset = (16 * section) + 12;
region->length = 4;
return 0;
}
static int w25n01jw_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section > 3)
return -ERANGE;
region->offset = (16 * section);
region->length = 12;
/* Extract BBM */
if (!section) {
region->offset += 2;
region->length -= 2;
}
return 0;
}
static int w35n01jw_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
@ -206,6 +236,11 @@ static int w35n01jw_ooblayout_free(struct mtd_info *mtd, int section,
return 0;
}
static const struct mtd_ooblayout_ops w25n01jw_ooblayout = {
.ecc = w25n01jw_ooblayout_ecc,
.free = w25n01jw_ooblayout_free,
};
static const struct mtd_ooblayout_ops w35n01jw_ooblayout = {
.ecc = w35n01jw_ooblayout_ecc,
.free = w35n01jw_ooblayout_free,
@ -394,7 +429,7 @@ static const struct spinand_info winbond_spinand_table[] = {
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL),
SPINAND_ECCINFO(&w25n01jw_ooblayout, NULL),
SPINAND_CONFIGURE_CHIP(w25n0xjw_hs_cfg)),
SPINAND_INFO("W25N01KV", /* 3.3V */
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xae, 0x21),