From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DA70DC5B572 for ; Fri, 14 Aug 2026 09:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:References:To:From:Cc:Subject:Message-Id:Date:Mime-Version: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QZ9YvJTdwvHh8m/jGG5Adovq+54IWqmJAPatkkqVSps=; b=I7UREFnT6U6Haq+lbQd03sr/av tvwbbhhy8ib15fb73pC8LIo2avV1uuQA9a4Y0BuuG9j3c84HlRVqi2nhG1vcz8gpa3QeB9USJVwTH d5zgrqrxhjauuBdHRNcahhecG6jef8buLwnOQjIn+OzVdiLDHLRUNmJAcP0d7el7XczVOeczEdwx7 BSPmfJbAqEOVqO3K2KshFpjiqtpfFdcKVWatThV5y6KDkeoE/ldhmj5vks7mDSXPsCGqiCJ56++6M lpUNwqHNgML17AGTjQpwy2SQQCXkc054ZWQubJK2OnopzG057Rl3uCqkCnKlK1pu5EpZO764vJn7D 6VHFYF+A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wuoW3-00000002RU8-2F1c; Fri, 14 Aug 2026 09:47:55 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wuoW1-00000002RTK-1XVi; Fri, 14 Aug 2026 09:47:53 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with UTF8SMTP id CB019600C3; Fri, 14 Aug 2026 09:47:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 011A01F000E9; Fri, 14 Aug 2026 09:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786700872; bh=pNSlvDwfkqL67d3nSwlphGmC0ZNFVWwfipL6aC61x2E=; h=Date:Subject:Cc:From:To:References:In-Reply-To; b=eD9y1M6G5UpTxC0nnV+kvA/MXb3TuYjlwhkk+pK8Jd5HtC25z2oLcjEnqonUUm95e wbQWHTFEdoocLreSTkAWOglulFANn5lBs9R/YTZnJxRc4ftTxKo88unq0BHas3PNFg Pd3jFyzZA/m3JVuvARpZGWQR8+HiTUqrULxRWz3mV1qeKoMQb5cD6y+8/HSxUY26sK lEEp1l0gPNgtSYvd+KMLIqLbVYot9AOhkK8ytN75/jvt0g5IHleaE3I3LCZ/B+CLRf bLqt7vKiHYfsmOkZ4kF3jEV6npb2N6KaTX7E0q/7dot/1ht5hMY63OrcuJ6mZ8x/CP 3FB7NVpW3MlqA== Mime-Version: 1.0 Date: Fri, 14 Aug 2026 11:47:48 +0200 Message-Id: Subject: Re: [PATCH v3 13/23] mtd: spi-nor: winbond: Add support for W25Q01RV-Q/N Cc: "Steam Lin" , "Hsin-Yi Wang" , "Thomas Petazzoni" , , , , From: "Michael Walle" To: "Miquel Raynal" , "Pratyush Yadav" , "Takahiro Kuwano" , "Richard Weinberger" , "Vignesh Raghavendra" , "Nicolas Ferre" , "Alexandre Belloni" , "Claudiu Beznea" , "Jonathan Corbet" , "Shuah Khan" X-Mailer: aerc 0.20.0 References: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-0-b637cf120d5c@bootlin.com> <20260813-winbond-v7-1-spi-nor-rv-addition-v3-13-b637cf120d5c@bootlin.com> In-Reply-To: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-13-b637cf120d5c@bootlin.com> X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============6893961401756026094==" Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org --===============6893961401756026094== Content-Type: multipart/signed; boundary=750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f; micalg=pgp-sha384; protocol="application/pgp-signature" --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 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). Reviewed-by: Michael Walle --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKgEABMJADAWIQTIVZIcOo5wfU/AngkSJzzuPgIf+AUCan7kRRIcbXdhbGxlQGtl cm5lbC5vcmcACgkQEic87j4CH/gZvAGA9WT5E0JXnbHC7KGtcjS3UY/jU0O5hEY5 ljw/KJbO9LHU00NMKlUmQjJPd0MFAmw9AX9wQzkDDfSfzrVrHlBTWBkWAPyEKIpA Pd+m5QkDCSyNTuMaFKy0xKkqagmn60FDCq8= =S/rt -----END PGP SIGNATURE----- --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f-- --===============6893961401756026094== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/ --===============6893961401756026094==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 18F40397922; Fri, 14 Aug 2026 09:47:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786700877; cv=none; b=l/w7SdjbvG/SdpvYktH1+1JIIpkrMy/6J/G4wcGY7+eXQLG3HVu99hyb1ZPZ77vJUdtjCRRQl3Ir6dUNlUZcBBnPrh396cw414mI6zJ5kRw0oUIKkzxgGthYAUmXmjY9FjqED2wFoibfNUrKf9wUBlvr4INLFYKcjJ66LdKa7Ks= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786700877; c=relaxed/simple; bh=pNSlvDwfkqL67d3nSwlphGmC0ZNFVWwfipL6aC61x2E=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:Cc:From:To: References:In-Reply-To; b=mJwU4aMQZ1FIWIUmg19OvPhu+zPmXmBxr5Ki1V04VpWb8D+fc1iFwv+Po4OO8DYDN7KjsTKLYUftDz5UK617oLqQ32yiAhA3EdfHOGXIwxiYTvACoeqX6X7pI3kWRa7DLPwwakCxjtD4XC5q+YaWDZ/+IDRzBZ7ZU3gycyCOhJA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eD9y1M6G; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eD9y1M6G" Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 011A01F000E9; Fri, 14 Aug 2026 09:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786700872; bh=pNSlvDwfkqL67d3nSwlphGmC0ZNFVWwfipL6aC61x2E=; h=Date:Subject:Cc:From:To:References:In-Reply-To; b=eD9y1M6G5UpTxC0nnV+kvA/MXb3TuYjlwhkk+pK8Jd5HtC25z2oLcjEnqonUUm95e wbQWHTFEdoocLreSTkAWOglulFANn5lBs9R/YTZnJxRc4ftTxKo88unq0BHas3PNFg Pd3jFyzZA/m3JVuvARpZGWQR8+HiTUqrULxRWz3mV1qeKoMQb5cD6y+8/HSxUY26sK lEEp1l0gPNgtSYvd+KMLIqLbVYot9AOhkK8ytN75/jvt0g5IHleaE3I3LCZ/B+CLRf bLqt7vKiHYfsmOkZ4kF3jEV6npb2N6KaTX7E0q/7dot/1ht5hMY63OrcuJ6mZ8x/CP 3FB7NVpW3MlqA== Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f; micalg=pgp-sha384; protocol="application/pgp-signature" Date: Fri, 14 Aug 2026 11:47:48 +0200 Message-Id: Subject: Re: [PATCH v3 13/23] mtd: spi-nor: winbond: Add support for W25Q01RV-Q/N Cc: "Steam Lin" , "Hsin-Yi Wang" , "Thomas Petazzoni" , , , , From: "Michael Walle" To: "Miquel Raynal" , "Pratyush Yadav" , "Takahiro Kuwano" , "Richard Weinberger" , "Vignesh Raghavendra" , "Nicolas Ferre" , "Alexandre Belloni" , "Claudiu Beznea" , "Jonathan Corbet" , "Shuah Khan" X-Mailer: aerc 0.20.0 References: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-0-b637cf120d5c@bootlin.com> <20260813-winbond-v7-1-spi-nor-rv-addition-v3-13-b637cf120d5c@bootlin.com> In-Reply-To: <20260813-winbond-v7-1-spi-nor-rv-addition-v3-13-b637cf120d5c@bootlin.com> --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 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). Reviewed-by: Michael Walle --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKgEABMJADAWIQTIVZIcOo5wfU/AngkSJzzuPgIf+AUCan7kRRIcbXdhbGxlQGtl cm5lbC5vcmcACgkQEic87j4CH/gZvAGA9WT5E0JXnbHC7KGtcjS3UY/jU0O5hEY5 ljw/KJbO9LHU00NMKlUmQjJPd0MFAmw9AX9wQzkDDfSfzrVrHlBTWBkWAPyEKIpA Pd+m5QkDCSyNTuMaFKy0xKkqagmn60FDCq8= =S/rt -----END PGP SIGNATURE----- --750d1e216d57a1bc49f227e38f8825dd3895ca452371391da81650be968f--