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

From: Sean Anderson <sean.anderson@linux.dev>
To: Tudor Ambarus <tudor.ambarus@linaro.org>,
	Pratyush Yadav <pratyush@kernel.org>,
	Michael Walle <mwalle@kernel.org>,
	linux-mtd@lists.infradead.org
Cc: Richard Weinberger <richard@nod.at>,
	linux-kernel@vger.kernel.org,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Vignesh Raghavendra <vigneshr@ti.com>
Subject: Re: [PATCH] mtd: spi-nor: Enable locking for n25q00a
Date: Mon, 6 Oct 2025 18:38:27 -0400	[thread overview]
Message-ID: <21760ebf-99f8-4ea3-8841-e023e00ae574@linux.dev> (raw)
In-Reply-To: <20251006223409.3475001-1-sean.anderson@linux.dev>

On 10/6/25 18:34, Sean Anderson wrote:
> 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

Sorry, this should be commit f80ff13135cb ("mtd: spi-nor: micron-st: Enable locking for n25q00")

https://lore.kernel.org/all/20200421063313.32655-1-js07.lee@samsung.com/

> maintainer...
> 
> Signed-off-by: Sean Anderson <sean.anderson@linux.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,


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