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 3D69EE9DE68 for ; Thu, 9 Apr 2026 08:45:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3705F10E7A7; Thu, 9 Apr 2026 08:45:41 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OjJz7Xrq"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0AEAE10E650; Wed, 8 Apr 2026 13:08:02 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 71E7360132; Wed, 8 Apr 2026 13:08:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD5E4C19421; Wed, 8 Apr 2026 13:08:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1775653681; bh=4CpiPtf5D36I7jFhu50adHqTpfS787u7f31ALg7azJY=; h=Subject:To:Cc:From:Date:In-Reply-To:From; b=OjJz7XrqoCnUCHrcCllQdiRrgBd4TXxVFrWAfZ82vhsjGrUO/3Bsq5RcqqRRCvexd AW1m0QNHlKX02pLEjx9Ub/h6fF5XAVDeqKqWYaLrqSWigp0bQSTvQNjeBi2ee6lOiP FQuZWfzYe9clXSMp4AEKGz8NLc4ktTD+l4DLHoXI= Subject: Patch "drm/amd/display: Disable scaling on DCE6 for now" has been added to the 6.12-stable tree To: Eric.Yang2@amd.com, Mario.Limonciello@amd.com, Rodrigo.Siqueira@amd.com, Roman.Li@amd.com, Tony.Cheng@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, alex.hung@amd.com, alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org, christian.koenig@amd.com, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, harry.wentland@amd.com, issor.oruam@gmail.com, ray.wu@amd.com, rosenp@gmail.com, simona@ffwll.ch, sunpeng.li@amd.com, timur.kristof@gmail.com, wayne.lin@amd.com Cc: From: Date: Wed, 08 Apr 2026 15:07:40 +0200 In-Reply-To: <20260401003908.3438-9-rosenp@gmail.com> Message-ID: <2026040840-bubble-delegator-979f@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-stable: commit X-Patchwork-Hint: ignore X-Mailman-Approved-At: Thu, 09 Apr 2026 08:45:39 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" This is a note to let you know that I've just added the patch titled drm/amd/display: Disable scaling on DCE6 for now to the 6.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amd-display-disable-scaling-on-dce6-for-now.patch and it can be found in the queue-6.12 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From stable+bounces-232626-greg=kroah.com@vger.kernel.org Wed Apr 1 02:45:16 2026 From: Rosen Penev Date: Tue, 31 Mar 2026 17:39:06 -0700 Subject: drm/amd/display: Disable scaling on DCE6 for now To: stable@vger.kernel.org Cc: "Alex Deucher" , "Christian König" , "Xinhui Pan" , "David Airlie" , "Simona Vetter" , "Harry Wentland" , "Leo Li" , "Rodrigo Siqueira" , "Ray Wu" , "Wayne Lin" , "Mario Limonciello" , "Roman Li" , "Eric Yang" , "Tony Cheng" , "Mauro Rossi" , "Timur Kristóf" , "Alex Hung" , amd-gfx@lists.freedesktop.org (open list:RADEON and AMDGPU DRM DRIVERS), dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), linux-kernel@vger.kernel.org (open list) Message-ID: <20260401003908.3438-9-rosenp@gmail.com> From: Timur Kristóf [ Upstream commit 0e190a0446ec517666dab4691b296a9b758e590f ] Scaling doesn't work on DCE6 at the moment, the current register programming produces incorrect output when using fractional scaling (between 100-200%) on resolutions higher than 1080p. Disable it until we figure out how to program it properly. Fixes: 7c15fd86aaec ("drm/amd/display: dc/dce: add initial DCE6 support (v10)") Reviewed-by: Alex Deucher Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher Signed-off-by: Rosen Penev Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/dc/dce60/dce60_resource.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/display/dc/dce60/dce60_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce60/dce60_resource.c @@ -404,13 +404,13 @@ static const struct dc_plane_cap plane_c }, .max_upscale_factor = { - .argb8888 = 16000, + .argb8888 = 1, .nv12 = 1, .fp16 = 1 }, .max_downscale_factor = { - .argb8888 = 250, + .argb8888 = 1, .nv12 = 1, .fp16 = 1 } Patches currently in stable-queue which might be from rosenp@gmail.com are queue-6.12/drm-amd-amdgpu-decouple-aspm-with-pcie-dpm.patch queue-6.12/drm-amd-display-reject-modes-with-too-high-pixel-clock-on-dce6-10.patch queue-6.12/drm-amd-display-fix-dce-6.0-and-6.4-pll-programming.patch queue-6.12/drm-amd-display-disable-scaling-on-dce6-for-now.patch queue-6.12/drm-amd-display-disable-fastboot-on-dce-6-too.patch queue-6.12/drm-amd-display-correct-logic-check-error-for-fastboot.patch queue-6.12/drm-amd-amdgpu-disable-aspm-in-some-situations.patch queue-6.12/drm-amd-display-keep-pll0-running-on-dce-6.0-and-6.4.patch queue-6.12/drm-amd-display-adjust-dce-8-10-clock-don-t-overclock-by-15.patch queue-6.12/drm-amd-disable-aspm-on-si.patch