From nobody Tue Apr 7 01:36:07 2026 Received: from smtpout-03.galae.net (smtpout-03.galae.net [185.246.85.4]) (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 AF04D3D9DCC for ; Fri, 3 Apr 2026 16:10:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.85.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232634; cv=none; b=Dk1ny0sTloWoRpiZW1AJMt3pSdmiFaCUo+eW2zlL36y32FX9Yd2LNy6Nd74tQJXIbZja8pYu+IB8N1OFg8udAcwKBHNp62V0hhlbf67+mA3gpqMzh3EDCB9eHinUscUb2NUCnTwcZh6vNU+THmD1pyJK3IaaQ/+6N+oMFihmW80= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775232634; c=relaxed/simple; bh=j22T9jJtFwoN8n0/7oJopyLdPfhWuHSvgQknFb9Qf3I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IgcrWvE/+jY+FIzO71hxyhKNB8BqFQj/x1GiGB6l27AXyUzUWHvpTwmUQ9QCnm6cmzqo7FR/g3yPdewVOwpFmSH+l7dqtyWpUFvBonjVuWaggMkvOuo3tEzGwKANT0kjYSFh4AlZ+TapGIgnfES4ESJxNDowvM/kEz/psAqjwZI= 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=tbAxAZ/V; arc=none smtp.client-ip=185.246.85.4 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="tbAxAZ/V" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 903A14E428D5; Fri, 3 Apr 2026 16:10:31 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 65B30603C1; Fri, 3 Apr 2026 16:10:31 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id E783B104500FB; Fri, 3 Apr 2026 18:10:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1775232630; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=yhH+eLu6fxqdAQZiuioR7i/D/pMDWxpaQ3+CJS2/QWU=; b=tbAxAZ/VAzy8IwFmhTTzqwRSl+g4GlfVzdSfv9xI4hU/wuFm+qnHf9r0c4JtQ6LGOI8PJ2 ozPkom7cEawzaD6No7+oJIrw7qdZOKJW5jSPg9tAn0ayc/Ra/1M0JjFqPwTFlAfROKUkzD Ox2BeqJIbdqoJB1WBWvdxc5YwUxzYVIikyRLMvmi9D19ZeGlUM8KYad7yI7J3CZIf8xPfp 2G+z0834XE4cu8O0fjPqcVkooIzEv/TjdzzkgE6Su4Ntfnf1O+DDB+mHq5agNT4gG+IqvI Gxe9XIWC/16RnoN+X+wYuWQy1eR8rg6P02229wTzjVofkrvUmi6CzK4ZqTpi3w== From: Miquel Raynal Date: Fri, 03 Apr 2026 18:09:41 +0200 Subject: [PATCH v4 23/27] mtd: spi-nor: winbond: Add W25H01NWxxAM 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-v4-23-833dab5e7288@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 W25H01NWxxAM: $ 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 00010000-07ffffff | locked | 2047 $ 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 00020000-07ffffff | locked | 2046 $ 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 ------------------+----------+-------- 00000000-07feffff | locked | 2047 07ff0000-07ffffff | unlocked | 1 $ flash_lock -u /dev/mtd0 $(($size - (2 * $bs))) 1 # all but two $ show_sectors locked sectors region (in hex) | status | #blocks ------------------+----------+-------- 00000000-07fdffff | locked | 2046 07fe0000-07ffffff | 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 7609dcc768f0..1b9b0e9598ef 100644 --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -363,7 +363,8 @@ static const struct flash_info winbond_nor_parts[] =3D { }, { /* W25H01NWxxAM */ .id =3D SNOR_ID(0xef, 0xa0, 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, }, { /* W25H02NWxxAM */ .id =3D SNOR_ID(0xef, 0xa0, 0x22), --=20 2.53.0