From nobody Tue Apr 7 01:14:23 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 35CB63B4E85 for ; Tue, 17 Mar 2026 10:24:59 +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=1773743102; cv=none; b=iLLzQLoIHqgXWXguTSStXisHoHpYiVGTcm0pYirG1nJBG/iHIhbOkdDpX9pcDEaC5DnOR7mGoAkrGtNjttNwjXRpnlaMvgjok7aeCU9+KhqyWr7REUCC5VbWSJ+oLoFcun4QYiPiLfr1Q1WFgEeC9Chc9FlI2DWSw+2kd/kJqiU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773743102; c=relaxed/simple; bh=tlvQp1bZ7+klWZfcbfGIXVjcUoWUKKWDjg3IvR83O/A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=aNkleL4x2Wgt1xvY95bumOvUTyK6nRsj+tVsUqM5JyqxI0xj/rPAyDGuNjz7J3vCthdH2emI6NMeTiwD69owsnJWaRUgHlxjCkbqQDrR0uzzjVKA+QcfUkgsVSDW74pUHAqL5GBb0JSOB3r65rwFPW/eRNBmeo2ouUYnpH6IcDU= 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=dNo0JiN6; 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="dNo0JiN6" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id E85E11A2D73; Tue, 17 Mar 2026 10:24:57 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id BF9A95FC9A; Tue, 17 Mar 2026 10:24:57 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id CBA0C10450457; Tue, 17 Mar 2026 11:24:55 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1773743097; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=aQ47DiGaPfkMamCb+o5HDFv/4Im96jTt1ueTmPftQyY=; b=dNo0JiN6h95Irl8OGWr2JvTVDPHHT3vHY9NvTjB1bueIR6JXF/Th70ScOAkpZi75mJwNn8 j/pD3u5gpnLKCvzgufRGJgR5mX8fSlXjQT4xZwG9Z1gdN2+W/DcqY1mKnd6eNzjDjVOCIU MqXYBx8Ikkp59FNRiGcJZWPc83Gz1oqzo+s4YShpC0+KdDz0fYFWKZUgUXi4rDaQs7+cCK +5y5SJh/3/hTnf1m1e7/3kyrk6iEjRJTXn7WnrYkgsYAhOKHzytxcwG58r/Y4ur/T5BbTp vbGgkKX87IZv4gsiMq1pePy/0DUlvz0GSIOemRXhKMaxcGRPHiNbMUBRt0aX9g== From: Miquel Raynal Date: Tue, 17 Mar 2026 11:24:29 +0100 Subject: [PATCH v3 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: <20260317-winbond-v6-18-rc1-spi-nor-swp-v3-26-2ca9ea4e7b9b@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 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 2.51.1