From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from DUZPR83CU001.outbound.protection.outlook.com (mail-northeuropeazon11013071.outbound.protection.outlook.com [52.101.67.71]) (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 EEC1518CBF8 for ; Fri, 25 Oct 2024 08:24:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.67.71 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729844672; cv=fail; b=NshtDEO2sTkizU9ddx4z42splNuBrv5TAdjOeUSKJSNx2OwvYVRqqNhkVaK3oKWSl3z/mwOPYHrAZlGMIXXxfvF6tAfD3+XsOh2FscIIpY44jFde7EYmTSNcTTrjEW/bSXiWtM0p/Xb+v/r8gjkzY/Mga2gJ6IzXRRZa0xEPqXk= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729844672; c=relaxed/simple; bh=nrhjMRsthStQoLpZHFa7gTs3iHoF+gjoKxbfKZfmCSk=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=kFfouclmEy452aPshO2QcWFXYbQyrZJmWJErmlUM6GlwKk1BxRFzWfe0tdASVGCe2yco+bUkV/jW6Dhk3Y5UL601CpMv+TrIVh3Qjmlz2nmT202Wbh3k+yOhu0Az8wkJOIEjpUVloKqeYdM3bhCM/Cdn/Pxe9gWuv8VsOuVHsn0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=F8Svgnq2; arc=fail smtp.client-ip=52.101.67.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="F8Svgnq2" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=n5HHtOPcC7Rhb/o29qT56kKKU5XSv6ajUXUr9kb5JrMyAGd2x+yIFpt9YFzjQ1aGT/6VzZslPy/V6JB27tlxWLuWEAdETdqOCk86B4mi4zhB6Ud+xl/Qs0noxEwIofVoqOSoZVK4SWsRgrzUP6X3vRq1KLzRggnN9Gm4s1PNj539HWJjNjokn2nz262KokazxnMT57NY69eKV7cOi8Kn1dHIO77j4SAeCmrtIb3AuNIeOLnhWZnbmU1O2JdZV94kdpkpJ4zYBZgoMmakPuPCTew+V5haNKoiSJ8dD7K2oPD1JaALSQtrPgoxrN3dd3mKXgFFx35nHsGpegLgcSho4A== 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=LcBeeXpFAl/d0FTrrF1GbY9c3oSEWrJNaipXM7WvgR0=; b=T7x1MJJLnhMsRlh8v7AFJeyS6/WbB8XZAzT9T2VhwAE8J8oXqBczmQCK9+BXY6qTWKZ7tZSHvH0lViKfNf5pkNeyQY8BUBFE7Ekx+OPo7rdQ0bMLsc5065HsmwOFn1BQXR9xc11FBFFIt63u3JG3oCY+N8aZOxNJsPZ3JexUlwUy/qMOTfYEG5JxN9/1VpcJYZxolJ57Oq4w4P0g4p9kBF4pIZkRJEdgKE0d16s76GuW2gzih13btcrc9jWL6PuHXB6HeKaFc5duK34d7gKhFjtj1xLzcyFoV6zRFyq3gx8D8d2kq+BS0W9qp30Nn1WNSlJRa3bGT1vKYXrxWEXrgA== 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=LcBeeXpFAl/d0FTrrF1GbY9c3oSEWrJNaipXM7WvgR0=; b=F8Svgnq24RqX5AWFD39QCQ7DhcLxSDeIheB/+fugpBbhYTmOnpBuKvjcA0jjH2qfXl5OZ22Lw/kU4cfYlKDzs1NsjVlPupYbQkI8OoCNz2RjFph3NA4FOjGfsZGYILPxHVZgsZgnkHq75pZEVFyROOnnmdMRGj703UmSqviyjSGuHviWL9xGQjwxmbEONhDEYz0PoZTcTOUmxGMGJo1LsDW1JQmgPH8DFyP5es2mqLk0omDyjJtMMnQyosaIw5C3QrKl2p9W9PVeJw80sBE8NWLPAhsZZcQRfoae452uoYHp1F/qVAH0epPTtQeTXkibtKAMUnaO1oaSYp3YVsGr5A== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from DB8PR04MB7051.eurprd04.prod.outlook.com (2603:10a6:10:fd::20) by PAXPR04MB9140.eurprd04.prod.outlook.com (2603:10a6:102:22f::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.21; Fri, 25 Oct 2024 08:24:26 +0000 Received: from DB8PR04MB7051.eurprd04.prod.outlook.com ([fe80::8f9d:4273:ea83:167a]) by DB8PR04MB7051.eurprd04.prod.outlook.com ([fe80::8f9d:4273:ea83:167a%5]) with mapi id 15.20.8093.018; Fri, 25 Oct 2024 08:24:26 +0000 Message-ID: <4e78781a-bce6-4582-b6aa-417f57c4725f@nxp.com> Date: Fri, 25 Oct 2024 16:24:48 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 12/15] drm/bridge: Add ITE IT6263 LVDS to HDMI converter To: Biju Das , "dri-devel@lists.freedesktop.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-media@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" Cc: "andrzej.hajda@intel.com" , "neil.armstrong@linaro.org" , "rfoss@kernel.org" , "laurent.pinchart" , "jonas@kwiboo.se" , "jernej.skrabec@gmail.com" , "airlied@gmail.com" , "simona@ffwll.ch" , "maarten.lankhorst@linux.intel.com" , "mripard@kernel.org" , "tzimmermann@suse.de" , "robh@kernel.org" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , "quic_jesszhan@quicinc.com" , "mchehab@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "catalin.marinas@arm.com" , "will@kernel.org" , "sakari.ailus@linux.intel.com" , "hverkuil@xs4all.nl" , "tomi.valkeinen@ideasonboard.com" , "quic_bjorande@quicinc.com" , "geert+renesas@glider.be" , "dmitry.baryshkov@linaro.org" , "arnd@arndb.de" , "nfraprado@collabora.com" , "thierry.reding@gmail.com" , Prabhakar Mahadev Lad , "sam@ravnborg.org" , "marex@denx.de" References: <20241021064446.263619-1-victor.liu@nxp.com> <20241021064446.263619-13-victor.liu@nxp.com> From: Liu Ying Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8 X-ClientProxiedBy: SI2PR02CA0048.apcprd02.prod.outlook.com (2603:1096:4:196::23) To DB8PR04MB7051.eurprd04.prod.outlook.com (2603:10a6:10:fd::20) Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB8PR04MB7051:EE_|PAXPR04MB9140:EE_ X-MS-Office365-Filtering-Correlation-Id: 30020c35-450f-459d-dcc7-08dcf4ce703b 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|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?WXlqaEw0MUlWa1U0OHVaUlpjaW02eXNRQ05VdWxxN3BITE5GcXQ5N25qdWtF?= =?utf-8?B?ODl6YzFBQU5kMWNycktCdmRLUC9PQWtUU1VvM2pOVmJEclkwL0c5UHc3Z2F3?= =?utf-8?B?SFNVTEFYek10QWcrYnRDR1BhRGJmTTNTY1FiSllJRXZIc2RJVk8vai9UWjQ3?= =?utf-8?B?UmN1NlRxQ09DN0JUc2ZKSmFON3JQd1V2d0g2ZE45aS9vZGtVcHhodnpieHdy?= =?utf-8?B?azQrWTVKWVk0NEh1eXd5SVVJOG9GbDFvcVB6MFBPVUtXOWUyZDdiZ3F0UUVq?= =?utf-8?B?MTQ5NTRvZG9rMkQzSWovQTZzYUdTTGtJZGlwSUFUSUg3SUpOVjltSm1VTFZr?= =?utf-8?B?SVFnR1lNaFJWNjZWRHQremk3NENzdFEyRzRYaUhmWVlYYkVyNFlsRWNEVGNk?= =?utf-8?B?bjlTeS9nVTlIcDRna1dicEJlWGlkK3BUeDFyNWZXd1lqdHV4Y1RZY0ZCVDB2?= =?utf-8?B?U3FYVFRseC90RDJlaW9YdVp1L29RaGFzM1RqTHlwaSs5OUpYWGx1RjdVWURp?= =?utf-8?B?NkYyWTAxb2ZDc1FSRFlMNE0wMFdGWFF1dHZuSGNQbDc2aGFNS1ZTQnNPTWcx?= =?utf-8?B?YnNkNlZocVliKzNZYTVjMWNML3o2UGsyblZZYVduSElsNGpSOStOZmlaakdB?= =?utf-8?B?K3pLY1lRbkd3amh4dmQyZjEwSUpDKytrY3l4NHVEY01TUWNUOGlIcS8vTk01?= =?utf-8?B?R2xuVy92TXgyenhRcHR4UGdIaTI5SU1NU3JzbXg0SXE1dTA4b1dwL0RNVVVT?= =?utf-8?B?TW1JK055RW5HZU9TeVVJeS84bG4vYlhreS9xY0xRNjZVS2JZWXRkWHhjWXBZ?= =?utf-8?B?UkJQZnBjcWxycmlTN2QyektaK3cyZGhGclhYbldxaXdSem1jaHpvNjN6SVgr?= =?utf-8?B?STJtekVJMlA1L2lyUXBTM0NzaUxlQnpEcXhJMXAyRjNnQlRPcWNMTVhrb1E4?= =?utf-8?B?Y1ZaeW1pbXdFZUV1VzlBNkNsTjNoT3NnSFc3Wk10WG5pUmpFYVRRc1hvZjZF?= =?utf-8?B?d1kvTDlxT29ieWNScWJWVEw0by9YMm96WDlCbGtSd21aa2xuZFNEY05tRVNu?= =?utf-8?B?bXBxWlFYeHYyWGh6NktlNEp6K0ZzcjhTcWJwUVVzZ2lDUDVySU05QWJBZHBq?= =?utf-8?B?ZE9ZMS9UWVc5citXdTlyZzlkSE9uQngwVTlqT3VoeUpPUitXTzZ3TmtGemgx?= =?utf-8?B?TTBtZ1grQmdtY0N4ZHB6Tm5NNldWdHBhb1hZQjRQRVRoa2I4eHRlTkZnWEFy?= =?utf-8?B?cUtsRnJyMkNmUUZFZjdyZWxTMUZqVmFodTRDTk5oRmR6ZndVNUVxM2gwNVJF?= =?utf-8?B?aGt1Q3BHbTltR21HUmZOQzNuU3p4WW51Nk1lOHB3cTkxaVNERTh5UHBvZEdq?= =?utf-8?B?eE9XdWlFQ0dqMXZERnJRQm5oZG13dnhKR2VsOU82SGNaWEZmUzhaOVB1dTB2?= =?utf-8?B?UXQ5Skh1Q25HZVE2TW1XQnhUZTFaQW54b1NZd2FEeUdTSDJlRytMTFNsdkdt?= =?utf-8?B?ekh4S1hNSDNPY0h5RFBuUm1WNHRDdGh2ZFVOZjNHbWVsUEVydUdqOE9jTWpM?= =?utf-8?B?ZkxGbExHYUYzMXhQN1ZuSHB6RWRxYTlHbjJlOVpKSmN6SVZSMkVkL3VTMm9y?= =?utf-8?B?RUJDY1dGZUVFeTJ3cGdsdllnTW9TQmoxbDJUcWVPTkZNNUJORU9YS0xnQ1J1?= =?utf-8?B?MHFjMnQrenRKaUVSZnZXMm1BbkttbHo4eEtHd29UU1E3ZjVERWJadk5Mb2Fs?= =?utf-8?Q?iOure9T770azIK/H9TE4WQ9wskg8AkfEPMyDm8Y?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DB8PR04MB7051.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(366016)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?S0kzYzlpdVRDM3FXSnN5d0Q1SkorTHFGSFJsSERNbEkvMVFIZmFWY0ZDL1dv?= =?utf-8?B?ZUkxSjArcm1kNFZneTlOdlFGYVNjK0FOdmtET0J6anFvcHRGMjZ2dW5nYVgz?= =?utf-8?B?blVXSDZKRytiekVQeDZGaDhRNWlwazRqeWsxaDRCQjdjVGp5bnFrVG52bmNp?= =?utf-8?B?RTQ2Z3IycVh6VEdrWFhUcng5eXNRU2hQb08xREhYbSs2Z2c2RG5jOUtRN0da?= =?utf-8?B?TFZwc3Y3SFQzQ1BRd0xCMXYwNi9UemIvZ21TcVVIL2FuamJWNitmaThXNUFP?= =?utf-8?B?YkR1QnVhZmg3VTk5Z2htdG1UbzRSalZBd0tvYytyTmlUSnBWSy9QaEFKRUZU?= =?utf-8?B?d1h2NmlXT0JIU2hsRkdSOWpiaDNHU1M1dy9jRlphNlRHRFg2RElUMUYwMlgz?= =?utf-8?B?eHdvZ1duN2gzcnhwOEdYYlFpWm5TUmo1ZjRaeWlTV1VEOGlHcWZ3UkRMcXgv?= =?utf-8?B?bFJHalVxNmhKcFBrcGNyYm1Sc1VrMWVCMnFuZWNtOTRyUUU2emNSMkhLRU5j?= =?utf-8?B?QytUQm5xemtIM2ZIOGZBQWVGVU9nK0JQdWVMT29qMVRzYm1iZVU4b05aK0I3?= =?utf-8?B?MXpmME5TOUxiaWYzZXB1ZzQ5MEQ5cERsYkZ2UUxpNmIyMDkwcFNSaEdlbTlT?= =?utf-8?B?bXRaTWN3NmVvTUtrOHpDSmhGbm03K1BNK01aR0lGbmE1bnp1N2dTZE96dlZ4?= =?utf-8?B?KzRwYnU1TDdzVVVBcVhXb0FYdDhVaGlPVHV4S3d1THRVS1RBWjh0a1Nicnp0?= =?utf-8?B?dWNYaEVTejlUcndkaWNOY1M4TVlhR2VJY1M3ZG1tWStzUmlMeXNERndhOTZR?= =?utf-8?B?TmlkbGxBSkh3d0JqY2NkQ05wek00Sk1yUVNtNFljeEU4UkNjTWlubFM3QlQy?= =?utf-8?B?Y08wOE5iQ0Q0TGdNb2FGamZXRWtueWgzd1hvd3BEOWx6eitlV3dJVHhYd2tE?= =?utf-8?B?UzdGbktYL25MV1RqVUl2T1JyRWVKL1h2a1BCdlllc01IL0RSQnlJMlBSSlhq?= =?utf-8?B?SHoxMVNQaXIvNjFmT21xMGROaDFtZ0I1UTF6dVlieGJhRjhma1pFZUZaQ0JR?= =?utf-8?B?SURWSFZoV2J1cWhhWkRWUkl2SzhSd09pTjYxVGVpRE1EYU84dUIrbGFKZ1Z2?= =?utf-8?B?RFRYaGNrbHFqclBmS1VCL0lWbjNSNmpTUnY3Vk40Y3VadDNIYlFEaEd2TWhh?= =?utf-8?B?SExRazJxdU1HTWtzdmVpTXU1R3pqOGczK2NBb3ZzMkY2OFhvV2xwbEg5QWpZ?= =?utf-8?B?SnV5NDdBZ1FmV0xXVi9jeTZoTktzZkNxTW1wcHAxWjBqZ0JBOEdGNGJnQ3ha?= =?utf-8?B?VXNnVEs4Q0ZwV0xRNDJWZ2F4ajBLZ0JtYTJVNHNvWmR5ZTh5dGUzTHVmamtV?= =?utf-8?B?QjZqNzl2anRmRVIwaWl4NnY2RS9jRW5mc1Y2TVlhL2tpV0Jsc3hPSko3em1U?= =?utf-8?B?REh5NTlObExmc1RDUGhIV1FNQW5nNkRmV0tkcjJhcmpXQWNpaGRQdi9OSlFr?= =?utf-8?B?QVgyK25USjFxdElkeTR2aHFHeVBDMk1DRmp4citOMkNxMG51Y2phWVZhcU5R?= =?utf-8?B?RlkvWE5udmFpZWQ5alNaYTJRTVM4TitTaWdOQWZqdzA2SFNmaUl6SEh4eXc0?= =?utf-8?B?VThaclVwSTJFSnBlTlJ6VEdJcUNpVjhGODN6RW9oOGJaS0ZpMUdjYzlhMnRZ?= =?utf-8?B?K2Z3ZWxPeGxKMTh0QWZzOXZhT0ZmV2dHSXB3cXFVZXVTMmpsLzRrSjFzczcr?= =?utf-8?B?S2VGWCtOdWRjZExJQjNldktNd3RncmZicVBrMU1EYVhpdlN0QkhyOEJEUU1Y?= =?utf-8?B?TjRpZUhsZ3Exc1JiMExDRFF2MzVRK285STF5Y0VwNE9zaHFVd1ZHOVFBK0xH?= =?utf-8?B?azNiKzFyQUorNm9Bd2Q5M0JnQXkzZFlvZ1ZtQVBiNEpWeExBTHpsMHlUOUF0?= =?utf-8?B?cTBNc2dpMUVrQmpGTi9RbC9hWTJXOW11amYyWm9WY3VqRC9uTzlpNEFaZFNB?= =?utf-8?B?dTRuU2kwSXlsemNMa1Q2V3NnYnpXbGU2K3dFYXRTbUd0N3pnbVd2eXNtRjVI?= =?utf-8?B?RUx6U1VVMnVsVWZicEF0c1ZuSnF4Ti9QMVBUQ05UWjh0bWlFK2lJMlNGc25W?= =?utf-8?Q?uZfgvhn14yKvX+9kLSP5oVP5v?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 30020c35-450f-459d-dcc7-08dcf4ce703b X-MS-Exchange-CrossTenant-AuthSource: DB8PR04MB7051.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Oct 2024 08:24:26.4705 (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: Yugeoa6XZy1wbvtUC2RlA+Cwrg6q51eoNeNk05ulFaoCPYLAC2GwBqMyUmZMMlJDZhoooaLfFxaxt/xTYxxINw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR04MB9140 On 10/24/2024, Biju Das wrote: > Hi Liu Ying, Hi Biju, > >> -----Original Message----- >> From: Liu Ying >> Sent: Monday, October 21, 2024 7:45 AM >> Subject: [PATCH v3 12/15] drm/bridge: Add ITE IT6263 LVDS to HDMI converter >> >> Add basic HDMI video output support. Currently, only RGB888 output pixel format is supported. At the >> LVDS input side, the driver supports single LVDS link and dual LVDS links with "jeida-24" LVDS >> mapping. >> >> Product link: >> https://www.ite.com.tw/en/product/cate1/IT6263 > > Just a question, > > What is the maximum single link and dual link modes you have tested? With single LVDS link on i.MX8MP EVK, the highest pixel clock rate I tested is 74.25MHz(1280x720@60). i.MX8MP LVDS Display Bridge(LDB) supports the highest 80MHz pixel clock rate with single LVDS link. With single LVDS link on i.MX8qxp MEK, the highest pixel clock rate I tested is 148.5MHz(1920x1080@60). i.MX8qxp LDB supports the highest 150MHz pixel clock rate with single LVDS link. With dual LVDS links on both i.MX8MP EVK and i.MX8qxp MEK, the highest pixel clock rate I tested is 148.5MHz(1920x1080@60). > > On Renesas SMARC RZ/G3E platform I have tested with this patch set, > > Dual link :1080p@60 > > and > > Single link:720p@60 > > For single link > 720p@60, sometimes I get message > "it6263 7-004c: failed to wait for video stable" I don't see this with i.MX8MP EVK and i.MX8qxp MEK. > > From SoC side, it can support max dot clock of 87MHz for single link. > > So just wondering other than reject modes greater than 87MHz from SOC > side, do we need to limit any thing on bridge device for single link Case? Since IT6263 works with 1920x1080@60(148.5MHz pixel clock rate) on i.MX8qxp MEK by using single LVDS link, I'm currently fine with the existing clock rate validation against the maximal 150MHz pixel clock rate. > > Cheers, > Biju -- Regards, Liu Ying