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 73F3BCDB46F for ; Tue, 23 Jun 2026 01:42:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To: Content-Type:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+PPd+7UKr8zsxnX86mHGIC69sLNuTaTcVtItn/y4pEY=; b=TqBUzTUXgATigqBBNabAUanQfe Vz67pkJLDWMQ4E3PnELbtpYCDC8MojTcmrd5JSzHvgyziF8SRRXDGLQje8/Qb3ROx2VNUS2jONkt5 PfOwLBcDGQGkew3QNPac8Sgu6tgqMirMFjfIdyfSTIMHZDr6ygPTH0NIruLA5/dyCelIGzO9g1N+Q eqtA00sMKBfv+rtN1yJP8ZZxLL6B79VcoRPtEur5XnjvWVcTKqubnB72JMCxTHsPBDHUwyQQCFZO+ Jhz0Qzm6t9pYSV7jtAakAwTUUPZGPy8Tc+JXEEInhqWT0SUneroeJMrViVjVaFCrGCyJxHhJUb7h6 VLYTI93w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbq9g-00000005YHv-0Ukd; Tue, 23 Jun 2026 01:42:24 +0000 Received: from mail-francesouthazon11011062.outbound.protection.outlook.com ([40.107.130.62] helo=MRWPR03CU001.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbq9d-00000005YHY-1IYq for linux-arm-kernel@lists.infradead.org; Tue, 23 Jun 2026 01:42:22 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ik6A9PGgCfirwBdtX6j16LySfoP4AaDgfNWUaZU4wVoCIEmgxfYVsLurxmdltf7iEOmm5QeTEa6RUY4b2XQMWbi4mfLW149wXs76ES8jp2MoXB9hXxhn2f7izPz6vw/AHEYHFuxmnSdxf74IXtNlde6IiMg745SJkHFnU4hGS0SHNQUnA91mMpssW38LATEeLd8ItTE1l+6mtg049ySkRr0cu/CUEPqGC3F9rQPSpZ0dGs7LwBYAEbFQJuHh9emgkXpwL//qGIwOMrzUH8EQiSJF4KRHa5X0GHEoAVMChUzMlPzS48xU3kdLSckDCoSQosu/sGKPJapMFNzY0/J/fw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=+PPd+7UKr8zsxnX86mHGIC69sLNuTaTcVtItn/y4pEY=; b=OqJRsBgiUdsIOpDq9vQ33XmWBGhL3pU/K52iIx0Nsczf4D/hcCEUqQmruhQzKKdRbPQ7AAmZbqEXcf3qSLb+Ni+dpmXn8bFau1efFN2a/a10eKNosIfWeQojKIipYHD3+GGKYqgqY6FFcPLEfhvM8bG8Qjeq1AHI1Nz1r2GurRgli/b7WAPlpjvUmUJBiyFHzTpKKhuZRUQ+pfWl+ovZE3uI5I9gGbFeuuObLjopzXehJ1euLH/xez+K0DXzGnUKpTL1L52piMT2AriTCM439quVvtLC81NMALtRyntFOZs3BZQ5lleg9wGF8Nxv2G6rs0SOoxq2BByuT26P0jJOZg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+PPd+7UKr8zsxnX86mHGIC69sLNuTaTcVtItn/y4pEY=; b=jNe413wMuigAkG0x2OIAvJlbY9rDAj5y5PRwIsxUEq9OpMkyi/Of2pwW/3ha5/PxJqXICC80eD2IW7QHAAu5EhpHBtgTpOKhireNRjkK8NPT51fka+5Q54+xJrg7/YV4h/64QVOsIOBofKgRQq+LnGlLhW4w1xITEFvqmVITRxem2nsmtyRrKPHvEh5znEz8Ts7ze10Cpo4pE/r10vN4gAwlHCPBd7vWhjTeF8dm6OOWaUtUUdYeAlhepvRAy8ls63v3/Mje8sJ5jUWZ8HEFYO5Y/nEHFCA1BMZIkt7yMJHDBGt4Gnk6p1+g4TkmzEFYPTIHiBZvnDD1vf89k91awg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS1PR04MB9287.eurprd04.prod.outlook.com (2603:10a6:20b:4dd::8) by DU0PR04MB9348.eurprd04.prod.outlook.com (2603:10a6:10:358::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.139.20; Tue, 23 Jun 2026 01:42:12 +0000 Received: from AS1PR04MB9287.eurprd04.prod.outlook.com ([fe80::6f30:763d:17d2:b79c]) by AS1PR04MB9287.eurprd04.prod.outlook.com ([fe80::6f30:763d:17d2:b79c%3]) with mapi id 15.21.0139.009; Tue, 23 Jun 2026 01:42:12 +0000 Date: Tue, 23 Jun 2026 09:43:41 +0800 From: Liu Ying To: Maxime Ripard Cc: Luca Ceresoli , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] drm/bridge: imx93-mipi-dsi: Fix mode validation Message-ID: References: <20260515-imx93-mipi-dsi-fix-mode-validation-v3-1-91f7d22b2fe4@nxp.com> <20260622-strong-messy-hare-2372cd@houat> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260622-strong-messy-hare-2372cd@houat> X-ClientProxiedBy: SI2PR04CA0005.apcprd04.prod.outlook.com (2603:1096:4:197::16) To AS1PR04MB9287.eurprd04.prod.outlook.com (2603:10a6:20b:4dd::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS1PR04MB9287:EE_|DU0PR04MB9348:EE_ X-MS-Office365-Filtering-Correlation-Id: 713e25cb-d1b8-4d64-a55d-08ded0c8a51f X-LD-Processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|19092799006|1800799024|366016|23010399003|22082099003|18002099003|3023799007|56012099006|4143699003|11063799006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS1PR04MB9287.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(19092799006)(1800799024)(366016)(23010399003)(22082099003)(18002099003)(3023799007)(56012099006)(4143699003)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?RU+shmRRMCUwIoZVYfHE1Gu2PKGbWg7gK8gQ3tVSsvbeYSIVuUc3NijyQ/iA?= =?us-ascii?Q?Fp7zbXn3bPAwy0FH2sLnOyAXs5+esLwgOWdmF4nxkx6LyCg22p0ELWtBT+kg?= =?us-ascii?Q?haZVGZQFQCkOgK7Kpuc8dYyf0vN/e5e0HTaNWSn7GABku5yo0yGAv/QxMudm?= =?us-ascii?Q?ooGlkY8wBcWUuv7xIiuccEUMwlodqjjzsyj6nMZcHBClG1WQ39qQO4UF8XdY?= =?us-ascii?Q?5b13E5dW4OS+9D5YvEZBtvqT1C8v7YAhCsj4AzqHJGDpMqmgRM+ySt19L2/W?= =?us-ascii?Q?n2z8ltHfUX08fmN1fQMkmS/1KSJ6NMZzkclf81vECI7hFn3WSW4RR+v+1msG?= =?us-ascii?Q?IBrSI4Tvu4aHDX8gWPcYiEgobWyNOVG4Sas+QWYLnn/eN5ld0r1q+B+/BRUo?= =?us-ascii?Q?W2tUUtrIQ+R2Fml7f4WmIFR4UsN3y2lE3XoSDWm2GhktFekd5Ufsdd4uJziD?= =?us-ascii?Q?VSMueOBPmfeGhWz228QG/TNhRfzqM9xVydAkr2BQFp7Jd+I/d4AmVQHUeAeg?= =?us-ascii?Q?ndu2ol+avxpK0Xamlbz4w7SsnCnmkxo4dVTT6rUcLynXKB91OY0o79E3VIi9?= =?us-ascii?Q?gXLj1+kajMEuPDAp/8Yf7fKgAORZzmwtJz2UunQEg53lHwfjhMQCQQoUtNCm?= =?us-ascii?Q?7EhaKPnHQXo8V8D9JV52/T6w2kPNoDTPvEaie7o5dkVDA2hsrE44b+qLl4rU?= =?us-ascii?Q?Mfd/JYoev/DYWdv/wxGBbvQLn2eREaCyMG6hDyhudN3lT0UeyH4wxJ0DbSLq?= =?us-ascii?Q?k0itzzNt4r/Gchhn+ml360x7bhcqC5Cr9mLPGgw0Qje1vIWH487ie/IkIUJV?= =?us-ascii?Q?H7BOrWZBwnbK3TkKzb0Q3s3uilOr4UjnXyH8tGlQxdelgWd4UBuuLXxfeFp4?= =?us-ascii?Q?8QwMNCVqtzhdLYG1AcTXGv7SqeDZd/ZtwtZuk6DbLwpl2Av9yUV3zh1jiZ7C?= =?us-ascii?Q?Cn36dApsKYca1KfelzeFmlq5ZXL+51alyJuFhJYR7VvziQBiJam/23ywG80h?= =?us-ascii?Q?YX2ypG7hZn76a+1aD3kNGKCvC9+6IUx+lHTQz0IWJamciOm7phuwkEMweHpn?= =?us-ascii?Q?AiX7uvtKKAU4Xjqyrt9bt1oz2A7dXk7Y6wbLZcziULzDey1BufgkqswUthjP?= =?us-ascii?Q?06pvfCXawSKoP8SYKhCBKlbXRQSrYLE4jq6HXRDjxyLGSC7jNCtQhKhSex0M?= =?us-ascii?Q?T3I7JIPLAmHlHPZmaRLvMKZ2tzmIxz1D8EFF1nrYsEeH31ZfnOJb/F75MdRG?= =?us-ascii?Q?cqYGUn4Xyg2iZP++Om7yB0058HaeC6qAGJElJI6AukomWTEVKaesqlikseDO?= =?us-ascii?Q?3gmR2UqJJftTdFF4sWGoTancd5Q3yryp1Rugdt+hPapINktnMX3PPWZXGpcy?= =?us-ascii?Q?CpLEhyB2cNXKWcXpXUu5WW9f8nW2OisRgLh/jukHtGCCHI8ec6SwBkmzoZK/?= =?us-ascii?Q?bi9qVBmu16HBzArzEx1KLcC7DY52p1q07Bm4C5nFjNCqzQ8Rvh0ojQ6ygtG5?= =?us-ascii?Q?iV1LDEICJah8cstZmQnidNBNsO4t13K9LO6GgnNIzLByeWZBUJeGCH7EcZtt?= =?us-ascii?Q?FF5muWCl/W8+kHs+yMzo82a5cvX8pGwkEyzC26OlTPDw27MYnt8BNsTZxlU+?= =?us-ascii?Q?EymcL5+Wi3XWOh+sbXBfhN+Ohvx0Za6uKpf0VtbJ/7H5hqragIVndz/NTghD?= =?us-ascii?Q?iQ4RjKIbLKs4THtG6Qx8y1fh6Jy+6kqoCr5Pm8otiNspX1Q2i6cDv2QQK1jX?= =?us-ascii?Q?IU0ro0qlzA=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 713e25cb-d1b8-4d64-a55d-08ded0c8a51f X-MS-Exchange-CrossTenant-AuthSource: AS1PR04MB9287.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jun 2026 01:42:11.9247 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 3o4/XmipIESFtcMblZGEdnO8GhFNBMYL+Zp7Gfb6EdB1eGCZeIVScrtKSGDjiDN/Ymmm2xmTCD2hFLI0oILzAA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR04MB9348 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260622_184221_371797_EDE02137 X-CRM114-Status: GOOD ( 14.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jun 22, 2026 at 11:38:19AM +0200, Maxime Ripard wrote: > On Mon, Jun 22, 2026 at 03:52:26PM +0800, Liu Ying wrote: > > > Finally, out of my utter ignorance on the subject, is the VESA +/-0.5% > > > margin generic enough that this driver can always rely on it? > > > > I see several upstream drivers rely on it, see "git grep '0.5%' drivers/gpu/" > > output. And every display mode allows -/+ 0.5% pixel clock rate deviation > > according to VESA Display Monitor Timing Standard [1], though [1] is a found > > by a random Google search. > > Yes, it's what we've been using for some time now. Is there any > particular concern about it? I have no concern about it. Luca, do you have any concern? > > Maxime -- Regards, Liu Ying