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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Michael Walle <mwalle@kernel.org>
Cc: Pratyush Yadav <pratyush@kernel.org>,
	 Takahiro Kuwano <takahiro.kuwano@infineon.com>,
	 Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	 Tudor Ambarus <tudor.ambarus@linaro.org>,
	 linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 1/3] mtd: spi-nor: spansion: s25fl256s0: remove SKIP_SFDP flag
Date: Tue, 02 Jun 2026 11:57:31 +0200	[thread overview]
Message-ID: <875x41nu2c.fsf@bootlin.com> (raw)
In-Reply-To: <20260601125438.3481722-2-mwalle@kernel.org> (Michael Walle's message of "Mon, 1 Jun 2026 14:52:43 +0200")

Hi Michael,

> diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
> index 65227d989de1..092450375d4e 100644
> --- a/drivers/mtd/spi-nor/spansion.c
> +++ b/drivers/mtd/spi-nor/spansion.c
> @@ -868,7 +868,7 @@ static const struct flash_info spansion_nor_parts[] = {
>  		.name = "s25fl256s0",
>  		.size = SZ_32M,
>  		.sector_size = SZ_256K,
> -		.no_sfdp_flags = SPI_NOR_SKIP_SFDP | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
> +		.no_sfdp_flags = SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
>  		.mfr_flags = USE_CLSR,
>  	}, {
>  		.id = SNOR_ID(0x01, 0x02, 0x19, 0x4d, 0x00, 0x81),

Fine by me. I believe the expected behaviour should just be an empty
feedback, leading to the SFDP to be invalid and thus SFDP parsing
skipped, right?

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Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Michael Walle <mwalle@kernel.org>
Cc: Pratyush Yadav <pratyush@kernel.org>,
	 Takahiro Kuwano <takahiro.kuwano@infineon.com>,
	 Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	 Tudor Ambarus <tudor.ambarus@linaro.org>,
	 linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 1/3] mtd: spi-nor: spansion: s25fl256s0: remove SKIP_SFDP flag
Date: Tue, 02 Jun 2026 11:57:31 +0200	[thread overview]
Message-ID: <875x41nu2c.fsf@bootlin.com> (raw)
In-Reply-To: <20260601125438.3481722-2-mwalle@kernel.org> (Michael Walle's message of "Mon, 1 Jun 2026 14:52:43 +0200")

Hi Michael,

> diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
> index 65227d989de1..092450375d4e 100644
> --- a/drivers/mtd/spi-nor/spansion.c
> +++ b/drivers/mtd/spi-nor/spansion.c
> @@ -868,7 +868,7 @@ static const struct flash_info spansion_nor_parts[] = {
>  		.name = "s25fl256s0",
>  		.size = SZ_32M,
>  		.sector_size = SZ_256K,
> -		.no_sfdp_flags = SPI_NOR_SKIP_SFDP | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
> +		.no_sfdp_flags = SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
>  		.mfr_flags = USE_CLSR,
>  	}, {
>  		.id = SNOR_ID(0x01, 0x02, 0x19, 0x4d, 0x00, 0x81),

Fine by me. I believe the expected behaviour should just be an empty
feedback, leading to the SFDP to be invalid and thus SFDP parsing
skipped, right?

  reply	other threads:[~2026-06-02  9:57 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-01 12:52 [RFC PATCH 0/3] mtd: spi-nor: Rework flash parameter initialization Michael Walle
2026-06-01 12:52 ` Michael Walle
2026-06-01 12:52 ` [RFC PATCH 1/3] mtd: spi-nor: spansion: s25fl256s0: remove SKIP_SFDP flag Michael Walle
2026-06-01 12:52   ` Michael Walle
2026-06-02  9:57   ` Miquel Raynal [this message]
2026-06-02  9:57     ` Miquel Raynal
2026-06-02 11:01     ` Michael Walle
2026-06-02 11:01       ` Michael Walle
2026-06-05  8:05   ` Takahiro.Kuwano
2026-06-05  8:05     ` Takahiro.Kuwano
2026-06-05 13:05   ` Tudor Ambarus
2026-06-05 13:05     ` Tudor Ambarus
2026-06-01 12:52 ` [RFC PATCH 2/3] mtd: spi-nor: don't clear the SNOR_F_4B_OPCODES flag on failure Michael Walle
2026-06-01 12:52   ` Michael Walle
2026-06-02  9:58   ` Miquel Raynal
2026-06-02  9:58     ` Miquel Raynal
2026-06-05  8:15   ` Takahiro.Kuwano
2026-06-05  8:15     ` Takahiro.Kuwano
2026-06-05 13:05   ` Tudor Ambarus
2026-06-05 13:05     ` Tudor Ambarus
2026-06-01 12:52 ` [RFC PATCH 3/3] mtd: spi-nor: rework flash parameter initialization Michael Walle
2026-06-01 12:52   ` Michael Walle
2026-06-05 13:17   ` Tudor Ambarus
2026-06-05 13:17     ` Tudor Ambarus
2026-06-02 10:03 ` [RFC PATCH 0/3] mtd: spi-nor: Rework " Miquel Raynal
2026-06-02 10:03   ` Miquel Raynal
2026-06-03  0:13   ` Takahiro.Kuwano
2026-06-03  0:13     ` Takahiro.Kuwano
2026-06-05  8:50     ` Takahiro.Kuwano
2026-06-05  8:50       ` Takahiro.Kuwano

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