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 2069BFF495E for ; Mon, 30 Mar 2026 14:21:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B2C1C10E769; Mon, 30 Mar 2026 14:21:50 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="hqcLGkoz"; dkim-atps=neutral Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com [209.85.221.54]) by gabe.freedesktop.org (Postfix) with ESMTPS id 76A3910E770 for ; Mon, 30 Mar 2026 14:21:50 +0000 (UTC) Received: by mail-wr1-f54.google.com with SMTP id ffacd0b85a97d-43b949bf4easo2639051f8f.0 for ; Mon, 30 Mar 2026 07:21:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774880509; x=1775485309; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3gI1060qWAxguxfqLo7d74lXelCuf/bPUdPr59uzbe0=; b=hqcLGkozQlB0S5ZKiHvp66/WcZBWeK8LFa2e1tQ5pigfAkIznS5687VOzpaAoBigfj jw25qaGrFunzDYjv87CJOdxIA0QiGW+4qw/FZLG1bndohIdk/EZvKPjK43trLYRiCcrV AtuLauuJimBeaZximH2gNwUehph1pAeIRVvgcAyIQTcvR/GxRvv8r+Pjy/6LTuDhFTqZ tqRgPWjITZZfFmqjhIDecIfZ+1WvlQwZd1Q/WGbYKabfDVIKbZDRUItW728gdO7Dvk0k KL3Tqeo6pHeDSkOWgjn1iIAL6AbaVbrlRu6zsGJYwOab1zCim9V3/yV7LQWkJECcRSEo JLOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774880509; x=1775485309; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=3gI1060qWAxguxfqLo7d74lXelCuf/bPUdPr59uzbe0=; b=VcI47sOUz9BblWE0OhSliIiZqzXyDGkjF7LPXKImw1wfnhwphkSmDAnSr6mlMiyaTJ df9CMOLTjOE7o8LOI4jlJ4ARg2NgHAf6qlMT0WRpWf4CbCou8PznVvh/MItTDTcRgDk8 IMEYNQFCr02yzkE8wnisxG/Sd3zqzD2a898mds/gUyUiAI++0dpnWIZDXoH5vEW/Z0X8 AYKeX6X4vH0iNxNJEQMdlC/i+JP7I7rIaPJAefflIJ4shJXGxioNdklv9+NYhufNcI4J fGSEMBbaSgwGKZEH4/qMVj5+4Lj5HneVUd3Mn3pRmrtLx8z6Ds7F5yPkshJIDtRf6fQA xFjw== X-Forwarded-Encrypted: i=1; AJvYcCWfk8e7SIOXmb2J47VNOWDOA1xsBJk4suzETreN+emmiWDBlbShh/JEQvJqvp5pVDi+kn9I+M81@lists.freedesktop.org X-Gm-Message-State: AOJu0YzBMe/rnCYOhMpSw7on+03zHXmOtgX+TnGYZF6ddkWaSL/giOGH P27P6DrPSBfB6c4sqLOgMgLYo+HtUQx6509HYJAkj0JoFms2KS17Vy3+ X-Gm-Gg: ATEYQzzfbogE7LVgCMARV5wvP04W+ZnuL1GOEcMOoHHLJvubg+SpQrkM/CHI6mxRVYz b6q3SVLF/3x5fEkOWgKntITV93h4vESBJe/I6HjfU4aMHP0hrgddAsc/b0sP+O5/whAmz5NYQwA TGCwz3uke0M1lQHyVL7RKz4e0MMhpC6aluh4Cw83cDPRC7yHRQgYupOeH5bj1By++jAoW7etx3C IHbIbzf55SDHaXmJGYDq2zjQ/QhwKDFM6ZvoZ5WZXtTQGYCkEEJF+uiwh/uTg0gUsZqdlr/xtOh bQsQvEYPvEfdYNQY3gxgTovO97BGDNceM6P9yMxq9HlvY7P6clYwf3ztrnTlldcnYgOnzQTHZdF YbnxRdcJmmvq586KXkqYub9lVH65yYJJlYkh4JzDKo5iOO0tKnmxOuSqWx7/TPC+rl7IwDBL5Au WFR0EsoK4RuaF8XAFdCox4t8krKSI/YYqJMFXDOdaPcWMzUI2cTlQApIoeg5WszFcd78IRXFe5 X-Received: by 2002:a05:6000:22c9:b0:43c:f1da:487d with SMTP id ffacd0b85a97d-43cf1da48c5mr16375164f8f.2.1774880508452; Mon, 30 Mar 2026 07:21:48 -0700 (PDT) Received: from timur-hyperion.localnet (5E1BC26F.dsl.pool.telekom.hu. [94.27.194.111]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43cf245ebafsm18062796f8f.21.2026.03.30.07.21.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2026 07:21:48 -0700 (PDT) From: Timur =?UTF-8?B?S3Jpc3TDs2Y=?= To: stable@vger.kernel.org, Rosen Penev , Christian =?UTF-8?B?S8O2bmln?= Cc: Alex Deucher , "Pan, Xinhui" , David Airlie , Daniel Vetter , Harry Wentland , Leo Li , Greg Kroah-Hartman , Bin Lan , He Zhe , Vitaly Prosyak , Alex Hung , Rodrigo Siqueira , Mario Limonciello , Ray Wu , Wayne Lin , Roman Li , Eric Yang , Tony Cheng , Mauro Rossi , "open list:RADEON and AMDGPU DRM DRIVERS" , "open list:DRM DRIVERS" , open list Subject: Re: [PATCH for 6.12 3/9] drm/amd/display: Disable fastboot on DCE 6 too Date: Mon, 30 Mar 2026 16:21:46 +0200 Message-ID: <7351746.9J7NaK4W3v@timur-hyperion> In-Reply-To: <6b15401c-1fdf-4d3b-84aa-dfc47f430895@amd.com> References: <20260326234716.16723-1-rosenp@gmail.com> <2312151.9o76ZdvQCi@timur-hyperion> <6b15401c-1fdf-4d3b-84aa-dfc47f430895@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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" On Monday, March 30, 2026 3:55:55=E2=80=AFPM Central European Summer Time C= hristian=20 K=C3=B6nig wrote: > On 3/30/26 15:16, Timur Krist=C3=B3f wrote: > > On Friday, March 27, 2026 12:47:10=E2=80=AFAM Central European Summer T= ime Rosen > > Penev>=20 > > wrote: > >> From: Timur Krist=C3=B3f > >>=20 > >> [ Upstream commit 7495962cbceb967e095233a5673ea71f3bcdee7e ] > >>=20 > >> It already didn't work on DCE 8, > >> so there is no reason to assume it would on DCE 6. > >>=20 > >> Signed-off-by: Timur Krist=C3=B3f > >> Reviewed-by: Rodrigo Siqueira > >> Reviewed-by: Alex Deucher > >> Reviewed-by: Alex Hung > >> Signed-off-by: Alex Deucher > >> Signed-off-by: Rosen Penev > >=20 > > This patch is incorrect and should not be backported. > >=20 > > (Note that the error is already fixed upstream. For stable kernels IMO > > it's > > best to drop this one.) >=20 > Is there some alternative which needs to be backported or should the old > kernel just work out of the box because we never enabled some feature > there? >=20 > Apart from that the patch set looks good to me. >=20 This patch had a typo and does the opposite of what it should, ie. it disab= les=20 eDP fastboot on DCE10 and newer instead of disabling it on DCE8 and older. The upstream fix is here: https://lists.freedesktop.org/archives/amd-gfx/2026-February/138577.html which disables eDP fastboot on DCE10 and older. >=20 > >> --- > >>=20 > >> drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 6 ++---- > >> 1 file changed, 2 insertions(+), 4 deletions(-) > >>=20 > >> diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c > >> b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c index > >> df69e0cebf78..7dc99c85b8ea 100644 > >> --- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c > >> +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c > >> @@ -1910,10 +1910,8 @@ void dce110_enable_accelerated_mode(struct dc *= dc, > >> struct dc_state *context) > >>=20 > >> get_edp_streams(context, edp_streams, &edp_stream_num); > >>=20 > >> - // Check fastboot support, disable on DCE8 because of blank > >=20 > > screens > >=20 > >> - if (edp_num && edp_stream_num && dc->ctx->dce_version !=3D > >=20 > > DCE_VERSION_8_0 > >=20 > >> && - dc->ctx->dce_version !=3D DCE_VERSION_8_1 && > >> - dc->ctx->dce_version !=3D DCE_VERSION_8_3) { > >> + /* Check fastboot support, disable on DCE 6-8 because of blank > >=20 > > screens */ > >=20 > >> + if (edp_num && edp_stream_num && dc->ctx->dce_version < > >=20 > > DCE_VERSION_10_0) > >=20 > >> { for (i =3D 0; i < edp_num; i++) { > >>=20 > >> edp_link =3D edp_links[i]; > >> if (edp_link !=3D edp_streams[0]->link)