diff options
| author | Eliav Farber <farbere@amazon.com> | 2026-02-18 17:35:22 +0300 |
|---|---|---|
| committer | Pratyush Yadav (Google) <pratyush@kernel.org> | 2026-03-30 18:00:34 +0300 |
| commit | 760e8c382c2de149b84e69fb60cccc32f6725a3f (patch) | |
| tree | b56eeceba5d645f4afb164e44d77d7434757cc94 | |
| parent | a0f64241d3566a49c0a9b33ba7ae458ae22003a9 (diff) | |
| download | linux-760e8c382c2de149b84e69fb60cccc32f6725a3f.tar.xz | |
mtd: spi-nor: winbond: Fix locking support for w25q256jw
The Winbond w25q256jw device:
- Supports lock/unlock via SR.
- Has Top/Bottom (TB) protect bit.
- Uses Status Register bit 6 as the Top/Bottom (TB) protect bit.
- Supports four Block Protect (BP) bits.
Update the flash parameters by enabling SPI_NOR_HAS_LOCK, SPI_NOR_HAS_TB,
SPI_NOR_TB_SR_BIT6 and SPI_NOR_4BIT_BP. Without these flags, the locking
configuration is incorrect.
Reference:
https://www.winbond.com/hq/support/documentation/levelOne.jsp?__locale=en&DocNo=DA00-W25Q256JW.1
Signed-off-by: Eliav Farber <farbere@amazon.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
| -rw-r--r-- | drivers/mtd/spi-nor/winbond.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c index 5a3e3ee96edb..eaa547d36aad 100644 --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -274,6 +274,7 @@ static const struct flash_info winbond_nor_parts[] = { .id = SNOR_ID(0xef, 0x60, 0x19), .name = "w25q256jw", .size = SZ_32M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP, .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, }, { .id = SNOR_ID(0xef, 0x60, 0x20), |