Commit 760e8c38 authored by Eliav Farber's avatar Eliav Farber Committed by Pratyush Yadav (Google)
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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: default avatarEliav Farber <farbere@amazon.com>
Reviewed-by: default avatarMichael Walle <mwalle@kernel.org>
Signed-off-by: default avatarPratyush Yadav (Google) <pratyush@kernel.org>
parent a0f64241

drivers/mtd/spi-nor/winbond.c

+1 −0
Original line number Diff line number Diff line
@@ -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),