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=52.101.65.25 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1792511570; b=fbC2qQZCb8n3RnFQJm3brHLLDsQXzPtrDCQZ+P7G10r25qocXo9SfEvfyDuNcuaBor5I xrTNm8O15uRW2pvfbO2lcTTajeOX5XC7WORkqUQrKvexw8NkOjwm9TzhBE+W4uYhIGMQU mObEsBfWQQK8Hj5Z9d+ypvZ+D9D41cze6mvf3g7Su9NoRreV/EZ2Omdq9a7jOADdH/V3/ sh6Cj8ra7Ehs1rV8WmCL74PSgSmjwDou9eY/88IbP1WCvJWAuC+Y++4aXfDpuJ5B3+va7 niBb9lJRpoKqv4pGafNTPXL/n/m0vvo+ojZn0aOtn0hLPxrBbeOYTIbeIzae/kUWfpg== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792511570; h=DMARC-Filter:DKIM-Signature:Received:Received:Date:From:To:Cc: Subject:Message-ID:References:Content-Type:Content-Disposition: In-Reply-To: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-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=aH4jLi8atPK96usn2LfTIYVk+m0TXGG78+/k4+u5ZQ8=; b=lqNHnwYkEhfZsjG9NjjsbAIqkfordiRlPCpCXWKqjF8T/r4qgHu3Aod1QAkM4UymdPyl DLJ7WdThG6fB6CruEwFskbxVYL2V5HCqancf5qgOv6EPJ/V7GnHgibyrQy7V2L3LUqwB4 musfOw8ImiidmJm82Sk3hvze6aTuoMGK6Wzk7irq4guwxQZI09kk4mlgOP99zIiqqiEXD FBfqNXMsdkKw57KrkxvQmiv4IsSZk8WUPPqu0EoqGz8QxIdL/5x6gIXXzPZGpZl1Mar+y 0zT+4/h8jHw9Szvn71zjKO6orOE/1hHL3qz6Q/qRp30prTcKzSbQ+HC6ax5Tqxd+Qrw== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=oss.nxp.com; spf=pass smtp.mailfrom=oss.nxp.com; dkim=pass header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.a=rsa-sha256 header.s=selector1-NXP1-onmicrosoft-com header.b=pHrDiamZ; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.65.25 Received: from DU2PR03CU002.outbound.protection.outlook.com (mail-northeuropeazon11011025.outbound.protection.outlook.com [52.101.65.25]) (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 64CBE606A319; Tue, 20 Oct 2026 15:52:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 64CBE606A319 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.a=rsa-sha256 header.s=selector1-NXP1-onmicrosoft-com header.b=pHrDiamZ ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=HE374yIK3rAH5MsJLzSbb/W4hAw/raVom2mF7ZPhviCCsGe4sezVAoJhmhzcCZEkA5mNthIlONbQA7HsaAXql23mIJ9/dB8MKqoS9izCXQMBHxoOjUTPPhmfuEheZ6ngzGKXkB54XtAaAnCzfmvMbucmeHffCa2kOAbbsQ3Bf994MadAglj5B62xIZprV7pcvMUqyx8d4XhMhRLD3OowyHEOPFY1u1WkWKUaaJ+e3ttbMon9XoOLDAgwveDHMzeRG4QUM2pJOz/jDkcRxJVuPGrvp7EHXd3RVbp3OGPbvp5gbF58sluoNntzNTBj64GrYB0qmvdWL8rfW+bIJBHl/Q== 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=aH4jLi8atPK96usn2LfTIYVk+m0TXGG78+/k4+u5ZQ8=; b=NyYXsf3UCSkVDCwtC7F688GDDkwtnP7wRQaiIZkMmLNpnT+May4CcOaB1Cbl2QummXh6MXeXJrWGlrI4T/ZUEHd2+uFStq7mvZ0cjkGO/fGZOTEiwWsBU8A1afJ2834zX7luPlOu30SYU41h2Ybu25lQKdAd3+k2VeFQYwv2Y4MdkX+gxlZiK1wwFF27m+JDbhhZpaJ1e0Ra8t1tGUCmq4IPQNNvxFCjV+3MiA3p/R6ekA4Ig5whAMSFKeT///vWhH/EnzCR5yKIeUkSu2BZIazzuiwiKqawgTGDpdJEWuoJ2p9kCGiTu5oeRQt6PPBgAWNFPizAlArOhKMraTMd5Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oss.nxp.com; dmarc=pass action=none header.from=oss.nxp.com; dkim=pass header.d=oss.nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NXP1.onmicrosoft.com; s=selector1-NXP1-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=aH4jLi8atPK96usn2LfTIYVk+m0TXGG78+/k4+u5ZQ8=; b=pHrDiamZ2fRKplu+HlPZkgsoa8UcuX3s2wY9SysU2lRUPJxz21GQPtuIgJ3GO+r92etgz12tXEXyDGzmIGt0xp4S4icvUrtyEDN83mtfz7TsA2UcMRGusKo5iJzZ4p0HOwOaEa1FDCJQjgXopjvLL3eDnMkL2Zo4rw9euWSeTbDhuARIXcb0p1umUP2VDAAvPsuYbvCXZp+3Zmqg0sQF7b7Ft9R9I2Cu5XoX5jjwpK+eKW0sR0+ykVvNr3ZwvFPCRC9Yi2eAfdCXgSq+xEcjlB7XyevNeDzQ+aO1c+l2guYKHVBGrRChwl9H5HYYL7/hNsToNKjIuxcEEDGb3CKiZQ== Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=oss.nxp.com; Received: from MI3PR04MB12438.eurprd04.prod.outlook.com (2603:10a6:290:76::14) by GV2PR04MB11590.eurprd04.prod.outlook.com (2603:10a6:150:2c8::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.522.19; Tue, 20 Oct 2026 15:52:45 +0000 Received: from MI3PR04MB12438.eurprd04.prod.outlook.com ([fe80::c715:c32:8bb1:b70b]) by MI3PR04MB12438.eurprd04.prod.outlook.com ([fe80::c715:c32:8bb1:b70b%6]) with mapi id 15.21.0522.017; Tue, 20 Oct 2026 15:52:45 +0000 Date: Tue, 20 Oct 2026 10:52:32 -0500 From: Frank Li To: Leonardo Costa Cc: Andrzej Hajda , Neil Armstrong , Robert Foss , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , David Airlie , Simona Vetter , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Leonardo Costa Subject: Re: [PATCH v2 2/3] drm/bridge: simple-bridge: Support data-enable-active endpoint property Message-ID: References: <20261019-v2-apalis-imx6-enable-vga-v2-0-ef6a3a780472@toradex.com> <20261019-v2-apalis-imx6-enable-vga-v2-2-ef6a3a780472@toradex.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: PH8PR15CA0014.namprd15.prod.outlook.com (2603:10b6:510:2d2::17) To MI3PR04MB12438.eurprd04.prod.outlook.com (2603:10a6:290:76::14) 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: MI3PR04MB12438:EE_|GV2PR04MB11590:EE_ X-MS-Office365-Filtering-Correlation-Id: b6bd3c6c-2acb-4f96-8e0e-08df2ec22edd X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|19092799006|1800799024|23010399003|10067099003|56012099006|22082099003|18002099003|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:MI3PR04MB12438.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(366016)(19092799006)(1800799024)(23010399003)(10067099003)(56012099006)(22082099003)(18002099003)(4143699003)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?cXBsQiA+q8X47v7CcP/YzK9fffChXwDYAT8Pv0d7o1Vnjel6UEDYnOV37J6y?= =?us-ascii?Q?szUYS+BWBmhifsXSCYj06nxhXk0axLFmk5lVNJ9+Xf2oYx7XDHYYfwXQWbyR?= =?us-ascii?Q?DPjKpRTSi6rFjxpwde+D357QW3obHCmMXsPNOzl/k1OLaKcfz4vK65SgC93D?= =?us-ascii?Q?20BoXZXTQ8B6MwIHYw861ccqqehx8XUTaI/5OG9LiZ8oJNB5FMrJSTi0I+A1?= =?us-ascii?Q?ArFsv3RHtbQ8vrDc+fCa23k+WQjpOkXRrZe4vFmR2MI2yDvmxNvAoZxnbf/6?= =?us-ascii?Q?mrGVAWxcj1lBkOPuFfTWzPudiBKKzgCX4IkoeSYO7Om2zPcBlKCgqOyAYKV5?= =?us-ascii?Q?88HxXdfComn0JOv984e4kJDniz7T7wfSj0YPdUQVbvm2IY+hfKKZhnhkcqSE?= =?us-ascii?Q?yv9WHT+2NH5DaD/72kOQ1g8VoSJdQDrCL9BiBXpts9fhl0mBCNBVBx57Ost8?= =?us-ascii?Q?uvyRUDS/Ur4uzXOqoxyBaaFMvoimHzvfHSoyb/gDoiJvGzywYeYYdAdJVpV0?= =?us-ascii?Q?LhV5A8p0soJL/ioCkejkqN0vQRHSAzHOH5kfOKaramGQgrXMF4HH/oXvo3sU?= =?us-ascii?Q?jA/Cg3zUytjQBlkST3LB6FMYxh/X+EJVylCqiSe0ITMTEYZCdl+s7/y6AK0F?= =?us-ascii?Q?vueFKX0EKZATYxhDXuX4vla+heJGqWSfOd8oXniyCXfpGsrKIFNj+h73qCHO?= =?us-ascii?Q?UM2tcRkDs3i+JD4I3q6GYek5YFYHGjrLROo90by9eLSha+ifCklqshoSBRkg?= =?us-ascii?Q?0nruHw6jnc3wgRkLV4malsp2tEq2mAty1Ucyq9effHzqfQW3DGpMfNCzqGN+?= =?us-ascii?Q?98aE/PcmcPPdtbOQGI5kYdNuX6heK0voADsRAFE6MKH8y98KbinLLtYD3iXY?= =?us-ascii?Q?0eB5kbqLy8Q9omAiIn/tMqQyAw/kufwUAHNe52jv38E5WZKol/Z+d/CzmGtN?= =?us-ascii?Q?ll3Zfs3El3O2HqvHfGP717EZaNqowhsk1O8jlirVxdO82YazY1cO6+Ghal2b?= =?us-ascii?Q?gq6eQNHXmtnrdgHJVrJ2OjIyqhlvdkxtkxh7QP5QuaR1gsldb8W5OTDrh7cd?= =?us-ascii?Q?xVF6eXWma7byOwssoRLyCUEH4h0TB+GvusaQU7DAqJECMeUe+chz13QOp1sO?= =?us-ascii?Q?cbvFVDAajBi3oYDDp82hkTVECD5cWS7D77RxWP3Ey/jh+yDtghFUaFjGcqk+?= =?us-ascii?Q?aszJCHx3xRjL2245+Gg299e3MBTfB3Vsbv+4ClEPIJIGKinPtt0BeGgqef4O?= =?us-ascii?Q?YDlheZLEM0X5mUrrptZpBCqxfnTuz8ViMP6T7zNrMPFIHKZG8ezVoipQ/HTe?= =?us-ascii?Q?UYNQEsDzj12Hre1Ho7MkF4HZ+n2i6Ze14kp0FlLOBWBWJ0JCn6SogRWFVWvS?= =?us-ascii?Q?wh2REoC6wLY3DcePibbe2u/VUo0ind7P6XihBVyyCco7vL/YmAJgK+5UOm6S?= =?us-ascii?Q?jDMxm8nlhNy324s9xzur/PBuFnNHr1bgHyeyMslajTWHCn2ghI1qHMSyFG1Q?= =?us-ascii?Q?CDmCAoj4iCPy22G6C83cSDbdjGdSiv9vG4T12LBX/VFQOSaaBynfIhgUOmEC?= =?us-ascii?Q?vvCeT4nwW1cgsC6q0QBU/GT8yoK1aeOiRHng9XIzRZy6xhU1YldO1JvmSZzT?= =?us-ascii?Q?6ilVmm0BciIfy5kfSPedoFNLhOnHwk73WmK9KIxKemR9Q+qt/eiEkF1YCNmx?= =?us-ascii?Q?g9InUF/amXQ45YROx0i1ac/w6qK7R5wRPtvXS/j3d7Yd2/Fxgiuzmn8drMW5?= =?us-ascii?Q?EmIPx1VCmUCTrnOqqwFQpLMuAkVJaEjBFyQDVg9RDmqmIVQetVMp?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: b6bd3c6c-2acb-4f96-8e0e-08df2ec22edd X-MS-Exchange-CrossTenant-AuthSource: MI3PR04MB12438.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2026 15:52:45.6756 (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: tcm+stFk5/VD/owdDxIuUie4MDMhlFCw37kvfpxyLqCzKWAW/yZv7rJ+KBxaT/xHzVtIuGB648qGaXppm6JGr+g49erGdOARPVpxmcLPhVGeZJTJopugW5MJMLnr/Mto X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV2PR04MB11590 On Tue, Oct 20, 2026 at 08:15:57AM -0300, Leonardo Costa wrote: > On Mon, Oct 19, 2026 at 02:50:36PM -0500, Frank Li wrote: > > On Mon, Oct 19, 2026 at 07:17:15AM -0300, Leonardo Costa wrote: > > > From: Leonardo Costa > > > > > > Some simple bridges, such as a resistor ladder DAC, may include a > > > data-enable input that must be driven at a specific polarity. > > > > > > Read the data-enable-active property from the input endpoint and fill > > > the bridge's input bus flags accordingly, so the upstream encoder drives > > > DE with the required polarity. The property is applied only if the > > > bridge doesn't provide its own timings struct. > > > > > > Signed-off-by: Leonardo Costa > > > --- > > > > Reviewed-by: Frank Li > > Hi Frank, > > Sashiko's comment regarding atomic_check was a false positive, but I > wasn't too sure about the one regarding devm_kzalloc. It seemed to make > sense to me, but I'm not too familiar with this subsystem yet. Do you > think this was also a false positive? I am also not familiar it, it looks make sense to me also. Frank > > Best regards, > Leonardo