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| author | Aleksandr Mineev <sanderrrs@gmail.com> | 2026-07-17 18:50:50 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2026-08-07 15:54:21 +0200 |
| commit | 8211f2d74b356a02fe38aeea5b74030ac156461f (patch) | |
| tree | d23f07bfe4420fb9eef8096d9103810a507dd19f /scripts/objdiff | |
| parent | f97bdc8ec1dc7b33781a702eeba55326c206be56 (diff) | |
| download | linux-8211f2d74b356a02fe38aeea5b74030ac156461f.tar.gz linux-8211f2d74b356a02fe38aeea5b74030ac156461f.zip | |
mtd: spinand: fmsh: fix FM25G01B/FM25G02B Quad I/O read dummy cycles
The FM25G01B/FM25G02B datasheets specify a single dummy byte for the
0xEB Quad I/O read-from-cache operation, but the generic
read_cache_variants set uses two dummy bytes for the 1S-4S-4S variant.
The extra dummy byte shifts the data phase and returns corrupted data
with no ECC error, breaking boot on boards using these chips.
Use a dedicated read-from-cache variant set with ndummy=1 for the
1S-4S-4S (0xEB) operation.
FM25G01B datasheet: https://www.fmsh.com/nvm/FM25G01B_ds_eng.pdf
FM25G02B datasheet: https://www.fmsh.com/nvm/FM25G02B_ds_eng.pdf
Fixes: d5a5c9eb2ee9 ("mtd: spinand: fmsh: add support for FM25G{01,02}B")
Cc: stable@vger.kernel.org
Signed-off-by: Aleksandr Mineev <sanderrrs@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions