From nobody Tue Apr 7 01:36:55 2026 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (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 8AC6C3CD8C1 for ; Fri, 3 Apr 2026 16:10:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232641; cv=none; b=OGr6yOF42HGiqWf2IVJ+ke6BKgh4PhPIV1/jT6JO3cP1lRwUGm7zhOgASTHqpDil1C77ztJsjxzsyE78HPkgMaaYI/AKprkpE0w9iN/i6BIofxt8YkZRX6D+0LuRAaTuurBapTOepZng1UkL/FKBvDpMQsHcNSZqKa6qxMjkGNY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232641; c=relaxed/simple; bh=cUbVbBcqMKFf1RX/kOt4gC70kPohUUtTfwikvgWJF+I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qjQjgd/+mkkm3UzPDQc8vhTMZ1Zawaw9o3JFj8W++f0oMWqmZDMuX8WvmPCk+H4R/SvhMOMabP1m7PsiuOuAwPjT2X6YW3HSxN0iRc/DVAgBT+KEADAOGJxspEUdcdabJgZgUrcvUfHlpC7X3/KvBenQAYP/c/U4LN6LRdJjiIk= 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=15oiMRxl; arc=none smtp.client-ip=185.171.202.116 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="15oiMRxl" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id 413E6C59F68; Fri, 3 Apr 2026 16:11:11 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 4599F603C1; Fri, 3 Apr 2026 16:10:39 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id A3CD910450112; Fri, 3 Apr 2026 18:10:36 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1775232638; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=/FS22rx9mnkniTA7eh480b/dmZecJqM9SydOvsfJsvI=; b=15oiMRxlYqVbFyLnQ1HGp225CzUqKV8R4vWR9i3TJCZsuYpk90Nmjy0Q0pxhXV7nDpLEy3 kFQrTRNbqsxKU7wUi8MFXcnJhMubkzAzLJnaeugSjh6Ti4m8W+qWgQ6Kg4qmn3a00UZppf 3mkIBVdjDjFtAkz8WR0fROkdDgPP276fC0Nvb2ZlilC++7I02D9hdjvbN1Y0+jafEvu/ha aIgL3jp4TfyksNZcPsBQONuNwlOCvZ3HjtqRGDxNSVIgFxJSjTJPmd7IIk6yi4hFPk6OT8 d6js6pvtvhtE4fxN0okPuqEJIPrb4a9SJ3dNc8niarZWq5cZM2nyK6cgBnW4gw== From: Miquel Raynal Date: Fri, 03 Apr 2026 18:09:44 +0200 Subject: [PATCH v4 26/27] mtd: spi-nor: winbond: Add W25Q01NWxxIM 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: <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-26-833dab5e7288@bootlin.com> References: <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-0-833dab5e7288@bootlin.com> In-Reply-To: <20260403-winbond-v6-18-rc1-spi-nor-swp-v4-0-833dab5e7288@bootlin.com> To: Pratyush Yadav , Michael Walle , Takahiro Kuwano , Richard Weinberger , Vignesh Raghavendra , Jonathan Corbet Cc: 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 with W25Q01NWxxIM: $ 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 00010000-0fffffff | locked | 4095 $ 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 00020000-0fffffff | locked | 4094 $ 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 ------------------+----------+-------- 00000000-0ffeffff | locked | 4095 0fff0000-0fffffff | unlocked | 1 $ flash_lock -u /dev/mtd0 $(($size - (2 * $bs))) 1 # all but two $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-0ffdffff | locked | 4094 0ffe0000-0fffffff | 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 373c0af9daa2..72053a4505f9 100644 --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -372,7 +372,8 @@ static const struct flash_info winbond_nor_parts[] =3D { }, { /* W25Q01NWxxIM */ .id =3D SNOR_ID(0xef, 0x80, 0x21), - .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, }, { /* W25Q02NWxxIM */ .id =3D SNOR_ID(0xef, 0x80, 0x22), --=20 2.53.0