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mtd: spi-nor: winbond: Fix locking support for w25q256jw

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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>
This commit is contained in:
Eliav Farber
2026-02-18 14:35:22 +00:00
committed by Pratyush Yadav (Google)
parent a0f64241d3
commit 760e8c382c
1 changed files with 1 additions and 0 deletions
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1
drivers/mtd/spi-nor/winbond.c
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@@ -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),