From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp14.infineon.com (smtp14.infineon.com [217.10.52.160]) (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 1138241D624; Fri, 4 Sep 2026 09:07:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.10.52.160 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788512855; cv=none; b=Jpi9YCI4+h21uBbM+wNqZrsbEG/S3NiWWFnvL/TbE2eWBJ0A8e0zq7ovcGcKSK7bh8S/oEgecjngYd08lvOO/d8wKNl7flRcatLpz1Vm3QGcdLTQA68I9z+QpB7SWcx7ExCHpqnLmDzGQB+uSffxYLrgKyEDrl2b/QImSNvTgB4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788512855; c=relaxed/simple; bh=7MoKXvC6968eejIFP7iCwt2T4ExB49oBcRo4K3eSCKI=; h=From:To:CC:Subject:Date:Message-ID:References:In-Reply-To: Content-Type:MIME-Version; b=VQA6bIX5btUOUWgvsD0ve/oeiwrFwiRUY0bOH9YL0dsbK1sBGGpFH99jyY91pY/QufpxTnmbB4T6yjScjta7I72BfteL2uszV5+3tGLIA0Rz0MbILhCwgoxCRqjVKLuMHvWLOcgyQKzH9RioMTeLbwrdsXm6RkC7VUT5U6uq4OU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=infineon.com; spf=pass smtp.mailfrom=infineon.com; dkim=pass (1024-bit key) header.d=infineon.com header.i=@infineon.com header.b=SQpqb2Sr; arc=none smtp.client-ip=217.10.52.160 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=infineon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=infineon.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=infineon.com header.i=@infineon.com header.b="SQpqb2Sr" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=infineon.com; i=@infineon.com; q=dns/txt; s=IFXMAIL; t=1788512853; x=1820048853; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=7MoKXvC6968eejIFP7iCwt2T4ExB49oBcRo4K3eSCKI=; b=SQpqb2SrCHPDa/2N0vswPvg7qoh8RZ9wvoflb1GS955sFMxnn3SzmYKn J7KasPS4shFrh8l33h+zhTKIQEbs6Qbhg31Aqy00Htq0OC0pBSFZnO2ku TeR8q0DvyM0Ys/V6gGwZq9jEct/WxAVm1Lt3X+IPoS1FmcCYgsvJ0WPRT E=; X-CSE-ConnectionGUID: uJTRJ/DhRNev+wUkTRcQKg== X-CSE-MsgGUID: 9jXa/FKoS4qX45ndJbitBA== X-IronPort-AV: E=McAfee;i="6800,10657,11895"; a="145631225" X-IronPort-AV: E=Sophos;i="6.25,260,1779141600"; d="scan'208";a="145631225" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO MUCSE819.infineon.com) ([172.23.29.45]) by smtp14.infineon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Sep 2026 11:07:25 +0200 Received: from MUCSE815.infineon.com (172.23.29.41) by MUCSE819.infineon.com (172.23.29.45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Fri, 4 Sep 2026 11:07:24 +0200 Received: from MUCSE815.infineon.com ([fe80::b54c:c0bd:546c:c9be]) by MUCSE815.infineon.com ([fe80::b54c:c0bd:546c:c9be%12]) with mapi id 15.02.2562.046; Fri, 4 Sep 2026 11:07:24 +0200 From: To: , , , , , , , , , CC: , , , , , , Subject: RE: [PATCH v4 12/25] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N Thread-Topic: [PATCH v4 12/25] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N Thread-Index: AQHdOvyPDTQdnozUAk+qARRuXX3Ydba+Hwgw Date: Fri, 4 Sep 2026 09:07:24 +0000 Message-ID: References: <20260902-winbond-v7-1-spi-nor-rv-addition-v4-0-779d35303dff@bootlin.com> <20260902-winbond-v7-1-spi-nor-rv-addition-v4-12-779d35303dff@bootlin.com> In-Reply-To: <20260902-winbond-v7-1-spi-nor-rv-addition-v4-12-779d35303dff@bootlin.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 SGkgTWlxdWVsLA0KDQo+IFRoZXJlIGlzIGFuIElEIGNvbGxpc2lvbiB3aXRoIHRoZSBjaGlwIG9m IHNhbWUgZGVuc2l0eSBmcm9tIHRoZSBKVg0KPiBmYW1pbHkuIEJvdGggY2hpcHMgYXJlIHZlcnkg c2ltaWxhciBpbiBwcmFjdGljZSwgaXQgaXMgbW9zdGx5IGEgbWF0dGVyDQo+IG9mIGVsZWN0cmlj YWwgZGlmZmVyZW5jZXMgKG1vc3RseSBwb3dlciBjb25zdW1wdGlvbiBiZWluZyBsb3dlcikuDQo+ IA0KPiBBcyBhIHNpZ25pZmljYW50IGRpZmZlcmVuY2UsIFJWIGNoaXBzIGlkZW50aWZ5IHRoZW1z ZWx2ZXMgYXMgc3VwcG9ydGluZw0KPiB0aGUgbmV3IFNGRFAgKHJldiBGKSBmaWVsZCB3aGljaCBm b3JjZXMgYW4gYWx0ZXJuYXRlIHdyaXRlIFNSMg0KPiBvcGNvZGUgKDB4MzEpLg0KPiANCj4gVGhp cyBkZW5zaXR5IHdyb25seSBhZHZlcnRpemVzIGl0cyBzaXplIGFuZCByZXF1aXJlcyBhIGZpeHVw IGZvcg0KDQpUeXBvPyAnd3JvbmdseScNClNhbWUgaW4gcGF0Y2ggIzIwLg0KDQo+IFsuLi5dDQo+ ICsgbXRkX2RlYnVnIGluZm8gL2Rldi9tdGQwDQo+IG10ZC50eXBlID0gTVREX05PUkZMQVNIDQo+ IG10ZC5mbGFncyA9IE1URF9DQVBfTk9SRkxBU0gNCj4gbXRkLnNpemUgPSA4Mzg4NjA4ICg4TSkN Cg0KSXMgbXRkMCBhIDhNQiBwYXJ0aXRpb24/DQoNClRoYW5rcywNClRha2FoaXJvDQoNCg== 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 C9652C79F80 for ; Fri, 4 Sep 2026 09:07:38 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dAJeEaJ4E/3p4fGzKCabB5Nfy3WqybYKyrfJH2UxBmI=; b=GquLxhxqSwolmE iLB2775DGYpHlGecgos73yvmCCot0TTFVfS2IQkIDLcBsqck+c+dNp7xjP5vFO2pnUiW7ocCRhoA2 onx5E9ZHT4zbxO02IBIdSMazrfP3BcnH7BK/1RtT6x7A1kl3ZZD0QroLc6bl2CBy3hPjK+VmU2qSN tFD4w6wR8K9lJaSrFcM+hr6efVu6XViu6pede2WOCTHS8eB1HJmc3ulF7Qqq+UZrBZ9F73Xboks5x SDFUr2jRV7AZf3YXHaRPxcJ4JQgO6lZWMS6E1mPy3x+XCCLARLFeemDUjPfM+18IdObBIb8XvLbCZ bQtdFRcgQVPCrDDCpUjA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x2PtU-00000001Ty5-1QBr; Fri, 04 Sep 2026 09:07:32 +0000 Received: from smtp14.infineon.com ([2a00:18f0:1e00:4::6]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x2PtR-00000001Twa-3Zov; Fri, 04 Sep 2026 09:07:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=infineon.com; i=@infineon.com; q=dns/txt; s=IFXMAIL; t=1788512850; x=1820048850; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=7MoKXvC6968eejIFP7iCwt2T4ExB49oBcRo4K3eSCKI=; b=l9YYbmfTAf1yzAqAL27w4Iu95bRkULpD5NEV4W5yZJ2mh56J2Bd3VLcG YZgWNQsA8EKw+u/bI+JfgjvZvXeIX1189YxTCXiJWGikPhX+7WUiyAWi1 MH3FdPWe/Zq0cY/2YZOEg4kOsOSMi9ifC3s9btu0Du3KorAi2kDls5aKO M=; X-CSE-ConnectionGUID: uJTRJ/DhRNev+wUkTRcQKg== X-CSE-MsgGUID: 9jXa/FKoS4qX45ndJbitBA== X-IronPort-AV: E=McAfee;i="6800,10657,11895"; a="145631225" X-IronPort-AV: E=Sophos;i="6.25,260,1779141600"; d="scan'208";a="145631225" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO MUCSE819.infineon.com) ([172.23.29.45]) by smtp14.infineon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Sep 2026 11:07:25 +0200 Received: from MUCSE815.infineon.com (172.23.29.41) by MUCSE819.infineon.com (172.23.29.45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Fri, 4 Sep 2026 11:07:24 +0200 Received: from MUCSE815.infineon.com ([fe80::b54c:c0bd:546c:c9be]) by MUCSE815.infineon.com ([fe80::b54c:c0bd:546c:c9be%12]) with mapi id 15.02.2562.046; Fri, 4 Sep 2026 11:07:24 +0200 From: To: , , , , , , , , , CC: , , , , , , Subject: RE: [PATCH v4 12/25] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N Thread-Topic: [PATCH v4 12/25] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N Thread-Index: AQHdOvyPDTQdnozUAk+qARRuXX3Ydba+Hwgw Date: Fri, 4 Sep 2026 09:07:24 +0000 Message-ID: References: <20260902-winbond-v7-1-spi-nor-rv-addition-v4-0-779d35303dff@bootlin.com> <20260902-winbond-v7-1-spi-nor-rv-addition-v4-12-779d35303dff@bootlin.com> In-Reply-To: <20260902-winbond-v7-1-spi-nor-rv-addition-v4-12-779d35303dff@bootlin.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.161.6.196] MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260904_020730_203094_9964C71B X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. 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: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Hi Miquel, > 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). > > This density wronly advertizes its size and requires a fixup for Typo? 'wrongly' Same in patch #20. > [...] > + mtd_debug info /dev/mtd0 > mtd.type = MTD_NORFLASH > mtd.flags = MTD_CAP_NORFLASH > mtd.size = 8388608 (8M) Is mtd0 a 8MB partition? Thanks, Takahiro ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/