From nobody Thu Apr 9 09:09:14 2026 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (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 E0D9B3AE707; Tue, 17 Mar 2026 10:24:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773743094; cv=none; b=achOD3ertJeOjg6s1hIkvHD4iC4L2HQXP1cWbL6HnaL2f5WscaPXVLBsFLUngcu8FMC7yfrSHkN5AAabg+P5Fb3mnOnDWjCF2n1EQF60+9ba6hE3dThJf+WZ34V3snCvcopdWMZTU3rEmCqnq3TrlghNbjRhHad80cp9y16danQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773743094; c=relaxed/simple; bh=T+tc8hlQUoawOQ4PZOcmI6S3JEvYe1k+xqcb9/crEKw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=SfvXiTpuLzcq9Bwx8Fn9EUeFRNJ1aYVYbUt/1FDzEGKEPfVQwZdvpJ6XiAFHL490c9Vyjg6jsO5NXVOYcKD5Z+cSGMqrbEwJroIfLoqvc8rihRI99k6JmB3o/EE1zmetfvy00IzRAYdTERK0zejVqYrDeAB0llE0gQKqHx+uLB8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=2eDnJIsI; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="2eDnJIsI" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id A4CC21A2E86; Tue, 17 Mar 2026 10:24:51 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7A5175FC9A; Tue, 17 Mar 2026 10:24:51 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 73D8310450453; Tue, 17 Mar 2026 11:24:49 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1773743090; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=3UTw9aN/2yCK3EvGO8QBuf8zar07N1b/IrNqKvh1CgE=; b=2eDnJIsIIFtXSHEnNT0QdUMy/UeGSLx1odw1HIC8E3lP17E8zCWp40u53c4CdsSVYWkBKD ihz4qbr9oJWEGVLa07H+jOqmpl/qnLiCRGqyuQuHUJfFJGp9jq5BQvcnOOLtkjWvliKRpC cyClh4i1C9nyDPuzcQnuvy6ARasEWUUBzX9YpcZtGOM5TcjKHWU35TNxc7ccciQ+C5RWSd vbkbMIwH1fL2ba2vlry/b5GzNODZ/FXIenkEl9o7zIQ9N5U6Vc7gm6HH3E+LoI1fOPZF/Z b+d0ZXjVCC/QjjeafJGM7cx/25dyhYB6wNWP9nWFhTcT6xe36yLGREbou6l0sw== From: Miquel Raynal Date: Tue, 17 Mar 2026 11:24:25 +0100 Subject: [PATCH v3 22/27] mtd: spi-nor: winbond: Add W25H512NWxxAM CMP locking support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260317-winbond-v6-18-rc1-spi-nor-swp-v3-22-2ca9ea4e7b9b@bootlin.com> References: <20260317-winbond-v6-18-rc1-spi-nor-swp-v3-0-2ca9ea4e7b9b@bootlin.com> In-Reply-To: <20260317-winbond-v6-18-rc1-spi-nor-swp-v3-0-2ca9ea4e7b9b@bootlin.com> To: Pratyush Yadav , Michael Walle , Takahiro Kuwano , Richard Weinberger , Vignesh Raghavendra , Jonathan Corbet Cc: Tudor Ambarus , Sean Anderson , Thomas Petazzoni , Steam Lin , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Miquel Raynal X-Mailer: b4 0.14.3 X-Last-TLS-Session-Version: TLSv1.3 This chip has support for the locking complement (CMP) feature. Add the relevant bit to enable it. Signed-off-by: Miquel Raynal --- Test run following the freshly written documentation: $ flash_lock -u /dev/mtd0 $ flash_lock -l /dev/mtd0 $bs $all_but_one # all but the first $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-0000ffff | unlocked | 1 00010000-03ffffff | locked | 1023 $ flash_lock -u /dev/mtd0 $bs 1 # all but the two first $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-0001ffff | unlocked | 2 00020000-03ffffff | locked | 1022 $ flash_lock -u /dev/mtd0 $ flash_lock -l /dev/mtd0 0 $all_but_one # same from the other side $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-03feffff | locked | 1023 03ff0000-03ffffff | unlocked | 1 $ flash_lock -u /dev/mtd0 $(($size - (2 * $bs))) 1 # all but two $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-03fdffff | locked | 1022 03fe0000-03ffffff | unlocked | 2 --- drivers/mtd/spi-nor/winbond.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c index fb855fe44733..7609dcc768f0 100644 --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -358,7 +358,8 @@ static const struct flash_info winbond_nor_parts[] =3D { }, { /* W25H512NWxxAM */ .id =3D SNOR_ID(0xef, 0xa0, 0x20), - .flags =3D SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_= NOR_4BIT_BP, + .flags =3D SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | + SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP, }, { /* W25H01NWxxAM */ .id =3D SNOR_ID(0xef, 0xa0, 0x21), --=20 2.51.1