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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 155B0C8303F for ; Thu, 28 Aug 2025 17:50:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A2F4010EA76; Thu, 28 Aug 2025 17:50:07 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="WwvApB+j"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id 99A3C10EA78; Thu, 28 Aug 2025 17:50:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1756403406; x=1787939406; h=from:to:cc:subject:date:message-id:in-reply-to: references:content-transfer-encoding:mime-version; bh=O8NJwGY5TmlPP3Fwv5BnrJT0OymoUD4Zhj1Mu05YCEg=; b=WwvApB+jow+EhJsNGnv9WyU0Vm1ee2hrc8Il07k/97ZaHY+As0+cTOKB 8Jp2AnJenbpOb5tOiWWBZCypffYavfPjQD/s4MwhDSCeW7sbVNRtRLlsf /04Fq9R+lN7mbUxMFPICVaI6cKvVvQva4pGSaFk6tibQPP6zL37Aat0Ha zXdfI0TDJ5LmakNYWnUXZ2rWIFq2YFg53zGZYDW1VhTzXuitWhpbXwLov 5vAd8WP7Vzph85yJEWNGAs2hAuQB0e/dw87gmAm9MdwOfzVtekIPRDY5K RI9nxmnvvKH8xh5o2wuxXBOXNRnd9Ds1QCJOLnrN+2qW8SnDjDG0eKpNh g==; X-CSE-ConnectionGUID: bRomowm7TxOPQh9ex7+Vlg== X-CSE-MsgGUID: MUJCqJ5OQDu/JaRvKn6lEw== X-IronPort-AV: E=McAfee;i="6800,10657,11536"; a="68959883" X-IronPort-AV: E=Sophos;i="6.18,220,1751266800"; d="scan'208";a="68959883" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Aug 2025 10:50:05 -0700 X-CSE-ConnectionGUID: EfhsxR92QMamtVvot1DhSw== X-CSE-MsgGUID: K1Y58AteQFmpWMzdOIM3SA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,220,1751266800"; d="scan'208";a="169696106" Received: from fmsmsx901.amr.corp.intel.com ([10.18.126.90]) by fmviesa007.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Aug 2025 10:50:05 -0700 Received: from FMSMSX903.amr.corp.intel.com (10.18.126.92) by fmsmsx901.amr.corp.intel.com (10.18.126.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Thu, 28 Aug 2025 10:50:04 -0700 Received: from fmsedg902.ED.cps.intel.com (10.1.192.144) by FMSMSX903.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17 via Frontend Transport; Thu, 28 Aug 2025 10:50:04 -0700 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (40.107.95.76) by edgegateway.intel.com (192.55.55.82) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Thu, 28 Aug 2025 10:50:03 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=XOtt0mi95pMJVWFynadgrsqbjr1oDBDlydxxXVI8C8sy8N8gAzQjJ6uqKM8j7L+TNlisk1OKPzUbD18fz7DP6JRXPbkq9i+5HKHsGT0JlqEDUkbB0ZMI4d0DB/kBWCfJyJDqxvtZcUJPMxsCvifz97YjD9+KB8XFlPaQXtyju5XX5VnVaJeJ0zskG5sszkImm999gW7WRwyVOLdgvNWiOa32eFfJr4GuW5yx27ZoD1h6dHSQm1qvGFbCg+nhYyAn8xL48Zdico3sF8ftb8pU722Vf9KOG+SzaNNZVtmCardgSXRogqug7CwlryVHSF4oBrB097T3oShkO/A+JGcrLA== 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=9T7D6ePyCiBAzCGRjKGQZiv3K/oIlQOmq/FI9ysQfK0=; b=v+ZnFBlzYzkfalbP+aydS7tK8GVKd6thfZ4IjWHCGoY/zMDiB/IxMIV6Daij5xYK6blgErD93EVFw4GVvddHjEK+9DCyTHQYOd9VQX/ruSFyaD7DRyKqcFLL1lF8zIzvGqwk6+STm84TirGEIQrFgYy023dg+Bq/4BIqAotgQNM0v0fQeMu5aA2WbLm1Q33NlS2d+KLriEwS+SuH7Qoya61TFz82tgxcgic9QRiXGs8U7Smy7uVgFEx5ieZJp/3sRMvugBB3Fi5p+n9IfhPctvqLW7mK4xS5Qfiea6uUWuAj7q2RXFCV8an8xDPmuF+ZBm6nZS0bLzHGQJ2MCMxN4Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from SJ0PR11MB4845.namprd11.prod.outlook.com (2603:10b6:a03:2d1::10) by PH0PR11MB7616.namprd11.prod.outlook.com (2603:10b6:510:26d::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9073.18; Thu, 28 Aug 2025 17:49:50 +0000 Received: from SJ0PR11MB4845.namprd11.prod.outlook.com ([fe80::8900:d137:e757:ac9f]) by SJ0PR11MB4845.namprd11.prod.outlook.com ([fe80::8900:d137:e757:ac9f%3]) with mapi id 15.20.9052.023; Thu, 28 Aug 2025 17:49:50 +0000 From: Imre Deak To: CC: , , Sasha Levin Subject: [PATCH 6.16.y] Revert "drm/dp: Change AUX DPCD probe address from DPCD_REV to LANE0_1_STATUS" Date: Thu, 28 Aug 2025 20:49:32 +0300 Message-ID: <20250828174932.414566-7-imre.deak@intel.com> X-Mailer: git-send-email 2.49.1 In-Reply-To: <20250828174932.414566-1-imre.deak@intel.com> References: <20250828174932.414566-1-imre.deak@intel.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: DUZPR01CA0111.eurprd01.prod.exchangelabs.com (2603:10a6:10:4bb::12) To SJ0PR11MB4845.namprd11.prod.outlook.com (2603:10b6:a03:2d1::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ0PR11MB4845:EE_|PH0PR11MB7616:EE_ X-MS-Office365-Filtering-Correlation-Id: cb374911-24f6-47d9-59b4-08dde65b4938 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|10070799003|1800799024|376014|366016; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?dKK9WN3ANG6uUrE+jVMMHq74yvXg9ruCFj+XaDhQ3afLiedLYTVFTWNAZrek?= =?us-ascii?Q?ssRgiiaWDnW7y+TXhkN31A/DZF1/PMlXfwkdY1lYeT8I8yjtW93plxLCRNGD?= =?us-ascii?Q?bISTb88W7w5WHpZ4ert0t3Xe0eMmctXN98xLQx39/hzoDPdnGpP+53fRwfGV?= =?us-ascii?Q?/IyKu1XA/hqEI8LDDP4kGWOxQhMknBxdea++PPo2cswuD3SQm7CJjH4/3454?= =?us-ascii?Q?6OMKIJUZ7bWxT/cUqa0auBVQC9jliARKOFb8M+ZHmJkfK9V/xCBoo9jd0JKm?= =?us-ascii?Q?izc9mkHhZQ+qek3pW90wiUTExTf00tLQr+otTtYG3RMVV10F8BG3YjWv7fxc?= =?us-ascii?Q?1EZvH4njwlfY/7SafUNouezT3txVaVQfCNZN/nS8kRwrHZxpIE2WN3d3xbS+?= =?us-ascii?Q?YgLuQBXjXgoEm4kxdTUG+SoQ8SOM/W8ZTkP8UEyg/xmAEReEvHSGJegtdidv?= =?us-ascii?Q?a4xALVkkLmAFolUi0sfbxwPffN1Y5vgx2qn4k1zhKfZHHhDrz+qfvZcBsOp9?= =?us-ascii?Q?OCXdqkoHSQhMuKzfR7jQW1iB5j26lBxTWYhu8uFSNG6xDC/vC3GpJ5sGXUmQ?= =?us-ascii?Q?VEAmMGY6LUoseNUSyXGMraD8ChG+ZiVj59G5lOw6QsbwH87EgN2QAJMjrAAS?= =?us-ascii?Q?onRkW15KBAXC4fdtMPVYe2EsjndpdWFsNEt01QYgLsvbn5DQ+nNgLrwPL0/T?= =?us-ascii?Q?YmvH1/Has5nkQ+asgFm2GWLDhsFeZfJ+5xT3OXzyAmCglMmencVKlt1yZoeG?= =?us-ascii?Q?cbzEH3ErgqrES6EtaGU6TLw+6cNGvCvoWYxsStvGlTVr6R/cOEe+2YnNSveN?= =?us-ascii?Q?qmBJdxSb+XMHO5LPEM/Scz7oAXCRtDtnKyYyFm4gBjtAzDyhqyD6MrTcg/aD?= =?us-ascii?Q?2yQl9PKXQ5I8xz3LJ3LV2mmjGid2UqqaXO8fZAXNNRtlMOug5oWJkNSYxwfp?= =?us-ascii?Q?bFCzBYEUA55M5Xan0PbsEpJOeX83UafUq8BQIVirMPbHZTuHROwEdMiIbKIu?= =?us-ascii?Q?kXZH0YRjYdmXNyUZE1WAPHpfPZWltXikdUYN3zEsevgOgkjx/9KdFGW7prZW?= =?us-ascii?Q?pKFhSVFskOJJRUXjZaRoHLCyQ3MKjShnx1pybePPJ6qlOxHbUkPB1a3EkjYO?= =?us-ascii?Q?8LkPdycuCXcMn72dphsO5Ud/y2Pk5dlXLl4EOPPT3o5fMWQgXhftTrjzRlOW?= =?us-ascii?Q?u7fMOfJlqQu0/xYO2nscMfUNWklGk6PSkAhBNV/5k5ds6h/Xd+XllwwEPIkD?= =?us-ascii?Q?TwKSfUIhrnTz6qKMMm8/uM6ZD/AOYUwB8HSMS7YbdmIdl4cysxkto1V50W1y?= =?us-ascii?Q?nRO1Lu9DmoHVxUdWDLVbEW2RBkzkZW9KX1yM6jaJq6XXgS+XFj18HXU4GX9j?= =?us-ascii?Q?EbhKk5Q=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SJ0PR11MB4845.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(10070799003)(1800799024)(376014)(366016); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?XZgo0Tk6FVyFMqddoMoCbQMGv7qw64/92xG4ADJmLAAs2ER/m/UONPopzL/D?= =?us-ascii?Q?L+Ah7BorAOuDYZktE6f1Pc4kMIVxcvRpzaYAyMFB99/5favk6ghBED2TBjRH?= =?us-ascii?Q?iKgWeVk1uOGLMZ8qaYQcbzFrAtaTX++WaBYnGoGWYrNRb/GAjfzvi2pKkaGZ?= =?us-ascii?Q?Whz4/kHeJ0P0xtMh+FYClKWVaBZX3YYel0hcNoKBifgil6AM/ZZ63ibV1YwU?= =?us-ascii?Q?o5BxSbTY5gaoQia6rSeSY2l0KGVkUNbcrkyjxTLSCqgep5MNUZ7N5CWoU6R4?= =?us-ascii?Q?KDCxC3BRA+S0A5ZlunjHt48m4ZJTB4hqsP4DqQgOlujmubN2yP46Ck/4KlaK?= =?us-ascii?Q?iZ+s/IXkftKStOKxlXWyUbH8v4BX2WPCdQazFNDnSmwoO9+rD9V68nVa4vXE?= =?us-ascii?Q?YQDNX/YgvO6U74u5b6epbybcwpbpfyXFO84dtEHjd5ddrByyYWRrnwSCyTsG?= =?us-ascii?Q?1N776z0FXo9fn87S27Tcy2Bi73/YkahIyOhLPuorW8Z1LqIBIiR8Rs2C8Rm9?= =?us-ascii?Q?5QKbrYWFeRv5u9rn1fOnhEZDWZhyhHHDVuPi0P7+L27qD+9sOtLYAZ7bRF84?= =?us-ascii?Q?DG4wejzE+UtxO8mxDhF2Hneps1K+b9NjELYPlzig7HFi4ON1L4kcdpkgDgrh?= =?us-ascii?Q?f7PB5Rh433zbZGHiBHOm5ahnQiXSxpYckFcnYcKAMlfSj9YGAB9prWgTZEp8?= =?us-ascii?Q?JgwFS6R3GeVKzoVqz6JQQZC3CcaNb+VUusI7RO7FQWDC8yj0ub4aL2Y05qPn?= =?us-ascii?Q?u31iXYRvS087x1FxqON0wKV3TT91GNLpCfc4iLIVMbsZqtY7At2rb3RmdUC/?= =?us-ascii?Q?1pSjmSwA2HYDcvAqzG1ZxBJKUUM4fwKeWxOdgLlwsZim6JJaWLrXNeU4f7bk?= =?us-ascii?Q?Y96IKGEmQV789V4RhzZ8hca3CXimt8KXOkoyqHukOOCwCSpmt3r+GlnvTsV8?= =?us-ascii?Q?EWz1Nyr7bFe2UMX6jdMLBdqfcnAB6Bg8F3sOHiw9t3sFC8yAbAt7FGPMa/Kb?= =?us-ascii?Q?/fKyVMxJnMSivt8CrXmUAeklVOjPFVD2QGSE2u0YK+3m31pH14ZQG9IQqzKk?= =?us-ascii?Q?kuXfI4F7HSKLtUP+XJ4aGtnimxBKhh2ItyEWWlT7m7W/XZLiYU/GftQIuDaw?= =?us-ascii?Q?0oTdwOtAWoE7//GcxHrozUKxqI3LQbsCWYXAN9EgnAQb+AcPj2/t9xoSRHZa?= =?us-ascii?Q?wfAtl2D7ZHC8gzRXrWaBWr4X3VGslr/AYR5mqGApd8EnCQqudC1X3mnq4Zzb?= =?us-ascii?Q?yjXUxi8BBFrrN+oOsMOtQjCQC4UnL4zfgOHaGghpduIsCsqz01C0Xb68mOt2?= =?us-ascii?Q?eEwSh5vmtw4qnNPxilHw+s5O/TGCBrwj6JvWtq3hNfE5zpP+2BJ/zSMXEPjp?= =?us-ascii?Q?lI4J3mK5CZ9LRePa2Mb4U67og35/H8Ywf3jWVjj6bO/7R9keJd7ASTnw6KwR?= =?us-ascii?Q?kbO+1pIJpBILlfHl4O+Gamtf2SetstqjjjMqwE8r2PiMqq4mczZaCd5cusa3?= =?us-ascii?Q?m3vRqoo6IMU/Vd2nfZBpKDtnNjk78NzcT+JK1FfDVlUb5+rz42F54kdESzot?= =?us-ascii?Q?BTNC92SIZ2JKiNu/rLH0z9vDYlzonwYcKSMbrVlhtmJkefLqBdh3jfAsgJYj?= =?us-ascii?Q?dP6GSzeb8iQdFRVX9/SsgNPZGTVP/tIirIVJ2iNs1cXy?= X-MS-Exchange-CrossTenant-Network-Message-Id: cb374911-24f6-47d9-59b4-08dde65b4938 X-MS-Exchange-CrossTenant-AuthSource: SJ0PR11MB4845.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2025 17:49:50.2842 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +zhtBIaDqUzGiJSOsH5cQuVhOSdeSVyrPIbbcEL/hIuhSToL5cxwBnPxnjg3ayyFB3HEUCpoBjpLUH/BJfuRnA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB7616 X-OriginatorOrg: intel.com X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This reverts commit 944e732be9c3a33e64e9fb0f5451a37fc252ddfc. The upstream commit a40c5d727b8111b5db424a1e43e14a1dcce1e77f ("drm/dp: Change AUX DPCD probe address from DPCD_REV to LANE0_1_STATUS") the reverted commit backported causes a regression, on one eDP panel at least resulting in display flickering, described in detail at the Link: below. The issue fixed by the upstream commit will need a different solution, revert the backport for now. Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: Sasha Levin Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14558 Signed-off-by: Imre Deak --- drivers/gpu/drm/display/drm_dp_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index dc622c78db9d..ea78c6c8ca7a 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -725,7 +725,7 @@ ssize_t drm_dp_dpcd_read(struct drm_dp_aux *aux, unsigned int offset, * monitor doesn't power down exactly after the throw away read. */ if (!aux->is_remote) { - ret = drm_dp_dpcd_probe(aux, DP_LANE0_1_STATUS); + ret = drm_dp_dpcd_probe(aux, DP_TRAINING_PATTERN_SET); if (ret < 0) return ret; } -- 2.49.1