diff options
| author | Santhosh Kumar K <s-k6@ti.com> | 2025-09-13 11:30:49 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-19 16:37:33 +0200 |
| commit | 96a2bc2dcefe76d18fb53b6332f3bf0e786d2e1c (patch) | |
| tree | 05cf6231e592636b3d79f6fc13b61cb6e5f3bf51 | |
| parent | 4fb20a449bf418bdf1c4d7f0a666b01a9d619c2a (diff) | |
mtd: spinand: winbond: Fix oob_layout for W25N01JW
[ Upstream commit 4550d33e18112a11a740424c4eec063cd58e918c ]
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: 6a804fb72de5 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mtd/nand/spi/winbond.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index 9af6675affc9..116ac17591a8 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -162,6 +162,36 @@ 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) { @@ -192,6 +222,11 @@ 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, @@ -307,7 +342,7 @@ 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), |