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| author | Michael Walle <mwalle@kernel.org> | 2024-08-05 00:15:35 +0200 |
|---|---|---|
| committer | Pratyush Yadav <pratyush@kernel.org> | 2024-09-14 17:56:31 +0200 |
| commit | a84d45217c8fbfab3f522dc84767f7f08ab1a85e (patch) | |
| tree | 3550c050dcc9744dc8afd6c05e46d426567c5aaa /drivers/mtd | |
| parent | 86fd0e6410b453fed93cf8085de1e5b0cfdbb6b9 (diff) | |
| download | linux-a84d45217c8fbfab3f522dc84767f7f08ab1a85e.tar.gz linux-a84d45217c8fbfab3f522dc84767f7f08ab1a85e.tar.bz2 linux-a84d45217c8fbfab3f522dc84767f7f08ab1a85e.zip | |
mtd: spi-nor: winbond: add Zetta ZD25Q128C support
Zetta normally uses BAh as its vendor ID. But for the ZD25Q128C they
took the one from Winbond and messed up the size parameters in SFDP.
Most functions seem compatible with the W25Q128, we just have to fix up
the size.
Link: http://www.zettadevice.com/upload/file/20150821/DS_Zetta_25Q128_RevA.pdf
Link: https://www.lcsc.com/datasheet/lcsc_datasheet_2312081757_Zetta-ZD25Q128CSIGT_C19626875.pdf
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Signed-off-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20240804221535.291923-1-mwalle@kernel.org
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/winbond.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c index e065e4fd42a3..9f7ce5763e71 100644 --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -18,6 +18,31 @@ SPI_MEM_OP_DATA_OUT(1, buf, 0)) static int +w25q128_post_bfpt_fixups(struct spi_nor *nor, + const struct sfdp_parameter_header *bfpt_header, + const struct sfdp_bfpt *bfpt) +{ + /* + * Zetta ZD25Q128C is a clone of the Winbond device. But the encoded + * size is really wrong. It seems that they confused Mbit with MiB. + * Thus the flash is discovered as a 2MiB device. + */ + if (bfpt_header->major == SFDP_JESD216_MAJOR && + bfpt_header->minor == SFDP_JESD216_MINOR && + nor->params->size == SZ_2M && + nor->params->erase_map.regions[0].size == SZ_2M) { + nor->params->size = SZ_16M; + nor->params->erase_map.regions[0].size = SZ_16M; + } + + return 0; +} + +static const struct spi_nor_fixups w25q128_fixups = { + .post_bfpt = w25q128_post_bfpt_fixups, +}; + +static int w25q256_post_bfpt_fixups(struct spi_nor *nor, const struct sfdp_parameter_header *bfpt_header, const struct sfdp_bfpt *bfpt) @@ -108,6 +133,7 @@ static const struct flash_info winbond_nor_parts[] = { .size = SZ_16M, .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB, .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .fixups = &w25q128_fixups, }, { .id = SNOR_ID(0xef, 0x40, 0x19), .name = "w25q256", |