From: "Michael Walle" <mwalle@kernel.org>
To: "Miquel Raynal" <miquel.raynal@bootlin.com>,
"Pratyush Yadav" <pratyush@kernel.org>,
"Takahiro Kuwano" <takahiro.kuwano@infineon.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Jonathan Corbet" <corbet@lwn.net>,
"Shuah Khan" <skhan@linuxfoundation.org>
Cc: "Steam Lin" <STLin2@winbond.com>,
"Hsin-Yi Wang" <hsinyi@chromium.org>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
<linux-mtd@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v3 17/23] mtd: spi-nor: winbond: Add support for W25Q64RV-M
Date: Fri, 14 Aug 2026 11:51:28 +0200 [thread overview]
Message-ID: <DKOKOCLARP0E.12YCLA6X5CZLG@kernel.org> (raw)
In-Reply-To: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-17-b637cf120d5c@bootlin.com>
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On Thu Aug 13, 2026 at 5:19 PM CEST, Miquel Raynal wrote:
> There is an ID collision with the chip of same density from the JV
> family. Both chips are very similar in practice, it is mostly a matter
> of electrical differences (mostly power consumption being lower).
>
> As a significant difference, RV chips identify themselves as supporting
> the new SFDP (rev F) field which forces an alternate write SR2
> opcode (0x31).
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
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WARNING: multiple messages have this Message-ID (diff)
From: "Michael Walle" <mwalle@kernel.org>
To: "Miquel Raynal" <miquel.raynal@bootlin.com>,
"Pratyush Yadav" <pratyush@kernel.org>,
"Takahiro Kuwano" <takahiro.kuwano@infineon.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Jonathan Corbet" <corbet@lwn.net>,
"Shuah Khan" <skhan@linuxfoundation.org>
Cc: "Steam Lin" <STLin2@winbond.com>,
"Hsin-Yi Wang" <hsinyi@chromium.org>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
<linux-mtd@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v3 17/23] mtd: spi-nor: winbond: Add support for W25Q64RV-M
Date: Fri, 14 Aug 2026 11:51:28 +0200 [thread overview]
Message-ID: <DKOKOCLARP0E.12YCLA6X5CZLG@kernel.org> (raw)
In-Reply-To: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-17-b637cf120d5c@bootlin.com>
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On Thu Aug 13, 2026 at 5:19 PM CEST, Miquel Raynal wrote:
> There is an ID collision with the chip of same density from the JV
> family. Both chips are very similar in practice, it is mostly a matter
> of electrical differences (mostly power consumption being lower).
>
> As a significant difference, RV chips identify themselves as supporting
> the new SFDP (rev F) field which forces an alternate write SR2
> opcode (0x31).
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
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next prev parent reply other threads:[~2026-08-14 9:51 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 15:19 [PATCH v3 00/23] mtd: spi-nor: QE handling cleanup + fixup reworks + Winbond RV chips addition Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-13 15:19 ` [PATCH v3 01/23] mtd: spi-nor: Rename BFPT_DWORD15_QER_SR2_BIT1_BUGGY Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 7:30 ` Michael Walle
2026-08-14 7:30 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 02/23] mtd: spi-nor: Create a structure containing the flash opcodes Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 7:31 ` Michael Walle
2026-08-14 7:31 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 03/23] mtd: spi-nor: Refactor Read Status/Write Status support Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 12:25 ` Michael Walle
2026-08-14 12:25 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 04/23] mtd: spi-nor: Add support for the new JESD216 rev F QER field Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 12:26 ` Michael Walle
2026-08-14 12:26 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 05/23] mtd: spi-nor: Create the concept of fixup table with match function Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:40 ` Michael Walle
2026-08-14 9:40 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 06/23] mtd: spi-nor: Create an indirection on the part name Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:41 ` Michael Walle
2026-08-14 9:41 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 07/23] mtd: spi-nor: Move the SFDP header structure to a C header Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:41 ` Michael Walle
2026-08-14 9:41 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 08/23] mtd: spi-nor: winbond: Prepare introduction of W25QxxRV-Q/N parts Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:46 ` Michael Walle
2026-08-14 9:46 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 09/23] mtd: spi-nor: winbond: Add support for W25Q32RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:46 ` Michael Walle
2026-08-14 9:46 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 10/23] mtd: spi-nor: winbond: Add support for W25Q64RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:46 ` Michael Walle
2026-08-14 9:46 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 11/23] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:47 ` Michael Walle
2026-08-14 9:47 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 12/23] mtd: spi-nor: winbond: Add support for W25Q51RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:47 ` Michael Walle
2026-08-14 9:47 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 13/23] mtd: spi-nor: winbond: Add support for W25Q01RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:47 ` Michael Walle
2026-08-14 9:47 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 14/23] mtd: spi-nor: winbond: Add support for W25Q02RV-Q/N Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:48 ` Michael Walle
2026-08-14 9:48 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 15/23] mtd: spi-nor: winbond: Prepare introduction of W25QxxRV-M parts Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:50 ` Michael Walle
2026-08-14 9:50 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 16/23] mtd: spi-nor: winbond: Add support for W25Q32RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:50 ` Michael Walle
2026-08-14 9:50 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 17/23] mtd: spi-nor: winbond: Add support for W25Q64RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:51 ` Michael Walle [this message]
2026-08-14 9:51 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 18/23] mtd: spi-nor: winbond: Add support for W25Q12RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:51 ` Michael Walle
2026-08-14 9:51 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 19/23] mtd: spi-nor: winbond: Add support for W25Q51RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:52 ` Michael Walle
2026-08-14 9:52 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 20/23] mtd: spi-nor: winbond: Add support for W25Q01RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:52 ` Michael Walle
2026-08-14 9:52 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 21/23] mtd: spi-nor: winbond: Add support for W25Q02RV-M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:52 ` Michael Walle
2026-08-14 9:52 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 22/23] mtd: spi-nor: winbond: Add support for W25Q51RV-Q/N/M Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
2026-08-14 9:53 ` Michael Walle
2026-08-14 9:53 ` Michael Walle
2026-08-13 15:19 ` [PATCH v3 23/23] mtd: spi-nor: debugfs: Expose SR opcodes and QE mask Miquel Raynal
2026-08-13 15:19 ` Miquel Raynal
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