From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.62.46 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1793152410; b=B8rQkp+d1GN+K9IE4BVF9O7EDqU1C5jzqPGgsiGbs2MOTKXyWzufWgkc5k6v2F27QKvq ggEiVy15GWqQoJdxTCn4OXjuPCDxHjPfi6a9B/mJ20f5qmXWPSXgPwGgnq4QmantDV4AF IT/9UJKhq3MOcBIkjQnK7qWUtcUsEmP1q96HXVyxi2hpxuSzdD6QC8Hrcpe+JvB0ZXZ1j bEW96xdbjfujp9KdLnITVBG+rSqfFib91bAHg5+y1rMk/xCd/GzKx+MKwYycKrYgAhdTB lYdla3lamXEzmgHj6njSZv6Aoe0/DmbyLu3OxwOzHWxHreyy6ihN5kLZak+1DqZxqGQ== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793152410; h=DMARC-Filter:DKIM-Signature:Received:Received:From:To:Cc:Subject: Date:Message-ID:In-Reply-To:References:Content-Transfer-Encoding: Content-Type:X-ClientProxiedBy:MIME-Version:X-MS-PublicTrafficType: X-MS-TrafficTypeDiagnostic:X-MS-Office365-Filtering-Correlation-Id: X-MS-Exchange-SenderADCheck:X-MS-Exchange-AntiSpam-Relay: X-Microsoft-Antispam:X-Microsoft-Antispam-Message-Info: X-Forefront-Antispam-Report: X-MS-Exchange-AntiSpam-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-MessageData-0: X-MS-Exchange-AntiSpam-MessageData-1:X-OriginatorOrg: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-AuthSource:X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-OriginalArrivalTime: X-MS-Exchange-CrossTenant-FromEntityHeader: X-MS-Exchange-CrossTenant-Id:X-MS-Exchange-CrossTenant-MailboxType: X-MS-Exchange-CrossTenant-UserPrincipalName: X-MS-Exchange-Transport-CrossTenantHeadersStamped; bh=qtk4iKYdwaQs1Uar2/hZc29NpLBUkP5zoNKNoM1seVA=; b=pYCGxsdUOevkz6wHZw6hdlrMgLRkFFdPpYIKSoMaO33IE1/nhn+O5Am9A4tLt/aG147p +2a+FdIDh0dnf8VBrP1dZ1Kl8/JxxZV1ygBoOjH4qlfStjqafDYey7pKnEZtUhMFymEVa gST4Va03DnwXrIQPU+poAWYKH50arogbxR+ZXTxW0YC4iD7NpvrM7i7juh0lSjvjt96Tj DJB1KizPb76wp4VNUBz19SDgkG2KZueP6xNLWm/vcKR1h2lBmfX5jXmXnCjzTLCt141fR JlrRCaqvp/fRZCkxyw1kOrviO+OdjmgzyleWXGjpTK54vCBRih2pMxDTPUMN+c2BjvQ== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256 header.s=selector2 header.b=cpy7tc9I; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.62.46 Received: from DM5PR21CU001.outbound.protection.outlook.com (mail-centralusazon11011046.outbound.protection.outlook.com [52.101.62.46]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (secp384r1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 01794606A31A; Wed, 28 Oct 2026 01:53:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 01794606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256 header.s=selector2 header.b=cpy7tc9I ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=MTfcnb/DoKc1KvboTqG/wz7O5tsddC9QciR94L//iDR+ZlhWJUxl4tpF8wd1DzfUrgR+oxbLhjmN9e27pZhu1Hb3U6/NXBDg9YyTcZdLr6eesyKBJGgCEUmlX4FcDxbPbKUgD2Xy3hslt8qxK8Y6aGZ3guHZM71/O+a7GEbBVEs9cSiL6lKrooJEzInDgBoFmN9IVuQI1GN18ShC3Ap+0F5VlzmTcV7YfG3hIxiZ31Va7Mqxc9FVVAEJ7YmoF8J7oldyIQWzsw9eKxwVyBSRsG3moF0Jnca+iZrBQGPOqZBMs3aEfqDt1QGKikg1EtszaoO262u9o5tR1kQjYA8Shw== 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=qtk4iKYdwaQs1Uar2/hZc29NpLBUkP5zoNKNoM1seVA=; b=UE59PohGnzAyajZIjOJzDqc0zRp2GwusDrSZGmPYIpdeGXZ07A5J9ooLMkGrjYhcgcf8j3wHhMbA4NDZMSeKIpaBi8NbTGOUvyFHFrbk5MRFWT6oNn+f56gfx2Uj1wD1EZuY9SSULIjaVJ6uCkPrEGJtwHzo4GZgyAilMKntp2ojIKlnpKJZee9UVDTsqIRSawPQlXT8NXjt+y68NxfuXEu4BdOU/MH+zmfgI5dkBl7ftyMhKB0Xc+R8UvYZQT845bQThgT358sci27JDawbzczLWI96hgp0yIRtJtVdS1z2NURewqjF5geDDK5nQ4xja6bfVoIfjZoMbJZUapcnjw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qtk4iKYdwaQs1Uar2/hZc29NpLBUkP5zoNKNoM1seVA=; b=cpy7tc9I4xX4XSLMNpz7zG2MzUnKQDene3fnnD5EvTiomtfY59Jp7hKlRq/lNeXTBz4H8VrgcZMnClNtAAiyFP/XiQO7ELGpDtvHxX8cYC48QNlLRLxr09nBLyzRqO4tKUAG08SSIZCIzGYsWjIZZJtkqur+DrXnyKH1Jn0Xp7piR+o17onTfLtUn3xSih2gqAzWWflSvlKaYc9SJBBHyrVATkT9fVdtaTxtHgXl+0C6rXcH2VWSyjIXHZuzpqOnRkgNXER/eyfJBH0AmNDQmllCZNJk4EaRWGyRQkQMCJBVGKmVRfz8f7H7nZ8hFjk/N8AWPDK1njkdkvK34lncqw== Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from SJ2PR12MB9161.namprd12.prod.outlook.com (2603:10b6:a03:566::20) by LV2PR12MB5774.namprd12.prod.outlook.com (2603:10b6:408:17a::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.22; Wed, 28 Oct 2026 01:52:43 +0000 Received: from SJ2PR12MB9161.namprd12.prod.outlook.com ([fe80::d9d1:8c49:a703:b017]) by SJ2PR12MB9161.namprd12.prod.outlook.com ([fe80::d9d1:8c49:a703:b017%5]) with mapi id 15.21.0546.021; Wed, 28 Oct 2026 01:52:43 +0000 From: Mikko Perttunen To: Thierry Reding , David Airlie , Simona Vetter , Jonathan Hunter , linux-tegra@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Aaron Kling , webgeek1234@gmail.com Subject: Re: [PATCH v4 0/2] drm/tegra: Support YVU formats Date: Wed, 28 Oct 2026 10:52:40 +0900 Message-ID: In-Reply-To: <20261025-tegra-drm-yvu420-v4-0-30b3bb0d0752@gmail.com> References: <20261025-tegra-drm-yvu420-v4-0-30b3bb0d0752@gmail.com> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-ClientProxiedBy: TYCP286CA0328.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:3b7::17) To SJ2PR12MB9161.namprd12.prod.outlook.com (2603:10b6:a03:566::20) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR12MB9161:EE_|LV2PR12MB5774:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c33b4ba-0c8e-47f8-18c6-08df34962819 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|23010399003|1800799024|10070799003|376014|261009223027099003|261026140227099003|56012099006|11063799006|261022075727099003|261021121427099003|261021123027099003|261022105027099003|18002099003|261026121527099003|22082099003|6133799003|10067099003; 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:SJ2PR12MB9161.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(23010399003)(1800799024)(10070799003)(376014)(261009223027099003)(261026140227099003)(56012099006)(11063799006)(261022075727099003)(261021121427099003)(261021123027099003)(261022105027099003)(18002099003)(261026121527099003)(22082099003)(6133799003)(10067099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 2 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?UVBsUFNsS214NXRlQmpCZnFmandhb1RYdlNDckVWQ0prUmorR0E4YzVFNmFi?= =?utf-8?B?M3AvZVdySVkrVnFmQVZMOFlQSSt0NHNzL2RpbmVnUGV6MVZ2VmkyN2tOZnMz?= =?utf-8?B?OW51Ymh4Q1BzTEZwTzVzQm1XMmVhRWNYZEFLUGw2eitPbTQwZEFrU295aklr?= =?utf-8?B?R1pva1ZUSW00dE9VcG5Wei8wVURaR0x1WDZxNEZyNjdwUzhON0ZFbUo1VnFh?= =?utf-8?B?ZGxSd1paaFpSWklpWWsvdk4vR3hJY0JSNEtlYktQL0VzbytCeVJzVDZkdFhw?= =?utf-8?B?VTZvZVVPNmUvV0h5S1ZrbTdKWEowNmlQenljSkNBWnJLeGpwb1Via0IwazBW?= =?utf-8?B?S2xROURxNUMyQUNZQllFaEZzTjU4Ylg3TktFQzBsQVN1R2ljZmFLRitFdTJs?= =?utf-8?B?ZWM0OUIzcGsvWktyOG5SN2tZYXZQa0JLalZydGpTTHBuQzhtVXl6bk9tQWdR?= =?utf-8?B?c2xQbC9VeDR0RFJ2Y056V241S0NsVUFiU0ZpbGtSOTczbE5ZSjN5UGJ6MTdt?= =?utf-8?B?cTJ2ZGlEbW1aQzRtR014ZGJwUjB0Q1JWK3VhTTFXaWczT1E5TTE5ZXRpK2NI?= =?utf-8?B?MkxzVXJQZlVjOEJSRXdTUmRZcjhqQ2p6Ykh5NU5mc0F4c2xNVTQwdFB4ZERJ?= =?utf-8?B?ckw3S2RiVEJYTjFTcEhNcTNVVjE4dWU1Uk5vLzJpVTBBK1pIMGpUeGRuL3pv?= =?utf-8?B?VWV3WmJIVXdSZUtsRCthVmZaUVVMVGhXeHIvRTlxVTY0MmtEeXY2VTlreXZL?= =?utf-8?B?R3ZQV0ZPWjlUSCsrMU1Vc0llUmUrVUhsSkRyR1RYNk1aemJCaUhUYTMraG02?= =?utf-8?B?RTB2dmtKVjI2YjdtQUU2VUpqZkYzc3UxM0JXTzVwOW1abGpsc0pZMTlNTDRX?= =?utf-8?B?MTlRejRHb3BKTHRtUk12YmVWQkdjY1ZuWkpmQndUc0pwR2hQNUVheXBTOW1F?= =?utf-8?B?MTFKeXIwSFlWc3UvaGh4L2J5UGVURGh0QllRb29LcnpjUjVuek1oM2xxRExW?= =?utf-8?B?Q3JrVTc0czRUQjRiUmljcENlQWdLZjM2LzE1MDc3encvRDF2N3MzOXlYdnFF?= =?utf-8?B?N3ZOMmxUM2JDQkZYdFlQbHRGUW4wMzVlSmo1eWsxdzJNZHh3a2xnOHNCV2hW?= =?utf-8?B?NXdmenA3Z2hmNkZLMVN4TFNuaXpCRi9iNS9IQVJXdEg2eE5iTDdYQkpiYUJm?= =?utf-8?B?SXlRbHpIWlNiVml1NUVCdk1RUnZNMkpEQkU0ZllkUjZiWnk0QTdEbC81Tk9P?= =?utf-8?B?bW5GUGdzZ2ZjbTZRaWtXWVBCWFRjRTVYMFh2cDB3MEZoRktRcjZRNHZJY2Yx?= =?utf-8?B?R2NRUjFjZUdHVjhtZlR5YlRDcFliWDE1M0wzT2RSMWtwV2JKZU5MRndqQ20z?= =?utf-8?B?QjZCK1dnWEVBSTFCQkRUOEZpSzVkdE1tbjd5NUovODlUZHZndGRkUTlyOGdC?= =?utf-8?B?VUROeDRoYmRhVERMQzRaQ1FhelNsdzdac204c0RTdWRLTXRKaENmU25OVnht?= =?utf-8?B?OTVKbnYxc1lVSldBM2lxTHRUY2hTSWRtcVdZQjNtUUQwTS9QVUQ3Mi85S1Z4?= =?utf-8?B?VlhkRU5TU1BPb3dYZFMrQUZoejE3UE9hVTM4aE1WVVR2YTE2Y0Q4TWdxQ1N1?= =?utf-8?B?aHQ5YnFQcXhTNnZRQnkzb3hmbFNFQmVxNmd4RmtVWkR0TnphYjBCc1JDYnQ0?= =?utf-8?B?cFgvT2djRnhCQmZ4UXUwV29pZzJnbWhFZW9CZkhlR2cyVE4yL3JxaldWN0FB?= =?utf-8?B?QkdSSkFlVjcraTdzUSswOGRUbWFucjIzUHlFWUt3K3ovV2QvM3pydWZ6L1M0?= =?utf-8?B?WEpUZC9HNUVTNHNheUNwaFgrSkZGbHRxNkp1VzcxVmpNM2o0cVhsaHphRVVT?= =?utf-8?B?Yy8yT05ZSVRmZ1dRbVZ4OTcweFg1STd3MTdiQ1hKU1lENjZ1VTFHTjZnWFlz?= =?utf-8?B?akVma1Z1QTNVdk5abTNUWGlQM21UaTNZMmU2NXFXMnpHRXV1ak1ubkVrTS9W?= =?utf-8?B?Z0kxZEx2SFVOdEZac0JBQ0xTaHZaMGdlNFJ4UjhaM0V4ZVhrK05VbDhPamJZ?= =?utf-8?B?Y2M4ZTNCTnNSMTRGdnl5OU9FOTVsQnp2MVQ0TXRwQmVUTkx4cDJkWUtMQWRv?= =?utf-8?B?VzBVODdGR1BQQldqKys3dDFEQm8wRm1BbzdhektOWGFjcDluenVPK1NzTis4?= =?utf-8?B?eEtqNHNIaDY3eWhZRmlQU3dPQWJ3LzZTR1IyRjF0MXZ4YXd5dTlRNFR3SkxR?= =?utf-8?B?d2hFT1FJeVRRcVdXQXhHRUJWd09tSTlFV2x3eC9jcDdOTEpiTVhFeFdqcU1m?= =?utf-8?B?NzlqS0o5aUdRcXgyNkRaSlJaQ213K2ZlSDBEMTZXeWFtaEJTREM2OGxNUzMr?= =?utf-8?Q?nQrmUbMZ+uOXkumdmKHzeXr6iG3RxKTo5W26EBdF82/NM?= X-MS-Exchange-AntiSpam-MessageData-1: nIGdSVJgIAiSyg== X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3c33b4ba-0c8e-47f8-18c6-08df34962819 X-MS-Exchange-CrossTenant-AuthSource: SJ2PR12MB9161.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Oct 2026 01:52:43.3684 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: JShvUuM/l2m1KnYYd762E6g2gz0yskkoqGealaJUJ4YlfBIJ9i5KlLYmY+TSBg/eix/tT6su2gpB7eySFpEszQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR12MB5774 On Monday, October 26, 2026 7:34=E2=80=AFAM Aaron Kling via B4 Relay wrote: > This is not directly supported by the display controller hardware. > However, this can be handled efficiently on tegradc by just passing the > chroma planes to the hardware backwards and reporting it as the yuv > equivalent. Nvdisplay has a hardware flag to handle the swap in > hardware. >=20 > YVU420 is required by AOSP for software decoded video playback among > other things. An attempt was made to handle this in gralloc by swapping > the chroma planes there, but it wasn't working. This kernel > implementation is working and is more generic anyways. This has been > verified on a SHIELD TV 2019 Pro for the tegradc path and a Jetson TX2 > NX for the nvdisplay path. >=20 > --- > Changes in v4: > - Drop yvu422 from the nvdisplay path. Yuv422 is not supported and will > be removed separately > - Link to v3: https://lore.kernel.org/r/20261020-tegra-drm-yvu420-v3-0-7f= 19a834ba98@gmail.com >=20 > Changes in v3: > - In patch 1, use the SWAP_UV window group flag instead of manually > swapping for nvdisplay > - In patch 2, support the chroma swapped variants of the other yuv types > - Link to v2: https://lore.kernel.org/r/20261018-tegra-drm-yvu420-v2-0-51= 2889103ab4@gmail.com >=20 > Changes in v2: > - In patch 1, simplify pre-nvdisplay path to a swap of the window base > address > - In patch 1, address sashiko report about failure to copy the new > struct entry in duplicate_state > - In patch 2, address sashiko report that yvu420 was missing from > tegra20_overlays when the targets already support yuv420. > - Link to v1: https://lore.kernel.org/r/20261008-tegra-drm-yvu420-v1-0-dc= 1c443c00f3@gmail.com >=20 > --- > Aaron Kling (2): > drm/tegra: Support swapping chroma planes > drm/tegra: Support YVU formats >=20 > drivers/gpu/drm/tegra/dc.c | 13 ++++++++++++- > drivers/gpu/drm/tegra/hub.c | 8 ++++++-- > drivers/gpu/drm/tegra/plane.c | 29 ++++++++++++++++++++++++++++- > drivers/gpu/drm/tegra/plane.h | 3 ++- > 4 files changed, 48 insertions(+), 5 deletions(-) > --- > base-commit: 20a33c6b6cbe7e4805dfb6cd68816937443aa148 > change-id: 20261008-tegra-drm-yvu420-1dbb7140e54a >=20 > Best regards, > --=20 > Aaron Kling Series, Reviewed-by: Mikko Perttunen Tested-by: Mikko Perttunen # Jetson AGX Xavier Thank you!