From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.tuxedocomputers.com (mail.tuxedocomputers.com [157.90.84.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C5E32E3706 for ; Fri, 4 Jul 2025 19:22:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=157.90.84.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751656978; cv=none; b=ixGHggK41ODCTSRhfm/p8tujW5Z/73cdjohHgctA3sd5zOefyPhTKKA4Q2kK5zvdnM42T/zE4m6CxJ+ehWACESRStRQnqFkg3185XUwNNekV2x4akOVetUc5hTv2+QZosONFGAtDA0ZrtIc/w662KCXrcT8vAYzRKWZYSOtc2Lg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751656978; c=relaxed/simple; bh=4zLBttPdNwTKQ4o3Ydc29fIOrnEgrPrSkrWunJ6Iq8s=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RF2v59crWXFJsXSBxe2P3kEPexhPpT4DTyjwTcqBideMSbWcgupIN31Y2dtp2CMeEdAKQ/baQF9PyzJlYNco1VDmhHhBcjqcMS033PPmjh7Vs2tAIIW1lseeAedwyYfJZaBU1FJFq01AoXCKXdjGraTlRULb0eLbG4FiwqCavCQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=tuxedocomputers.com; spf=pass smtp.mailfrom=tuxedocomputers.com; dkim=pass (1024-bit key) header.d=tuxedocomputers.com header.i=@tuxedocomputers.com header.b=mI8u+BPH; arc=none smtp.client-ip=157.90.84.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=tuxedocomputers.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=tuxedocomputers.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=tuxedocomputers.com header.i=@tuxedocomputers.com header.b="mI8u+BPH" Received: from [192.168.42.116] (pd9e59880.dip0.t-ipconnect.de [217.229.152.128]) (Authenticated sender: wse@tuxedocomputers.com) by mail.tuxedocomputers.com (Postfix) with ESMTPSA id B9BFC2FC00A2; Fri, 4 Jul 2025 21:22:51 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxedocomputers.com; s=default; t=1751656972; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7k7nENN+6Go7o9FF71hjN+u63munpkjhdSF0S/glj2Q=; b=mI8u+BPHg/e6FA8qkg6fqxQjE/4fgvBBOBIVJlT4gwYMpdoFOKXx2eJzHhNmfrcr3viH57 7f5y0i/LScQgNtgZjC85AKEZESC79uvlrwK1dyt4ZnAx8exA1qzFbJHBcgal1rvGc9RTlJ nxe08tDhpP35mBbP0xwxwimTiMYywAQ= Authentication-Results: mail.tuxedocomputers.com; auth=pass smtp.auth=wse@tuxedocomputers.com smtp.mailfrom=wse@tuxedocomputers.com Message-ID: <7df81e96-14b0-4fde-955d-2960e240b4c7@tuxedocomputers.com> Date: Fri, 4 Jul 2025 21:22:51 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 0/1] drm/i915/display: Avoid unsupported 300Hz output mode on a TUXEDO device To: Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter Cc: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, t.guttzeit@tuxedocomputers.com References: <20250704192007.526044-1-wse@tuxedocomputers.com> Content-Language: en-US From: Werner Sembach In-Reply-To: <20250704192007.526044-1-wse@tuxedocomputers.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Forgot to add Tim to the cover letter cc (I have not yet found a nice way to auto generate cover letter to's and cc's unlike for the actual patches) Am 04.07.25 um 21:03 schrieb Werner Sembach: > RFC because I'm not sure if this is the right approach. > > The flicker manifests ever few seconds 1-3 black frames in quick > succession. > > On windows 300Hz can not be selected for the iGPU, but the panel advertises > it. > > A cleaner solution would probably to go over the pixel clock, but for this > device there is only one 300Hz mode in the panels edid and that is at the > nativ resolution. Chroma subsampling was not tested as linux afaik offers > no way to easily enforce it for intel gpus. > > Tim Guttzeit (1): > drm/i915/display: Avoid unsupported output mode with 300Hz on TUXEDO > device > > drivers/gpu/drm/i915/display/intel_dp.c | 5 ++++ > drivers/gpu/drm/i915/display/intel_quirks.c | 30 +++++++++++++++++++++ > drivers/gpu/drm/i915/display/intel_quirks.h | 1 + > 3 files changed, 36 insertions(+) >