linux-kernel - [PATCH] mtd: spi-nor: Enable locking for n25q00a

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Message-Id: <20251006223409.3475001-1-sean.anderson@linux.dev>
Date: Mon,  6 Oct 2025 18:34:09 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Tudor Ambarus <tudor.ambarus@...aro.org>,
	Pratyush Yadav <pratyush@...nel.org>,
	Michael Walle <mwalle@...nel.org>,
	linux-mtd@...ts.infradead.org
Cc: Richard Weinberger <richard@....at>,
	linux-kernel@...r.kernel.org,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Sean Anderson <sean.anderson@...ux.dev>
Subject: [PATCH] mtd: spi-nor: Enable locking for n25q00a

The datasheet for n25q00a shows that the status register has the same
layout as for n25q00, so use the same flags to enable locking support.
These flags should have been added back in commit 150ccc181588 ("mtd:
spi-nor: Enable locking for n25q128a11"), but they were removed by the
maintainer...

Signed-off-by: Sean Anderson <sean.anderson@...ux.dev>
---
Tested with a mt25qu01gbbb, which shares the same flash ID.

 drivers/mtd/spi-nor/micron-st.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 187239ccd549..17c7d6322508 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -486,6 +486,8 @@ static const struct flash_info st_nor_parts[] = {
 		.id = SNOR_ID(0x20, 0xbb, 0x21),
 		.name = "n25q00a",
 		.size = SZ_128M,
+		.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
+			 SPI_NOR_BP3_SR_BIT6,
 		.no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ,
 		.mfr_flags = USE_FSR,
 		.fixups = &n25q00_fixups,
-- 
2.35.1.1320.gc452695387.dirty