From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB87118B618; Wed, 27 Mar 2024 12:26:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542392; cv=none; b=Zzqa6I5jiGUZljIsbhsNI97uyOY8VhTJT6MVgA/UclwL42AlmQmUDIv4YnrSeFw8ACNq/aQQvrJkEjfmReWKfX3sPdWQNWnlx+kFJmpkw49zPBkXRXmKL3+I5oRGkIvwQQvp4Swp80kAf8P6Eeyd7df2ixLR2QPlVavEAvq//+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542392; c=relaxed/simple; bh=c6I8Ilt7BMRkOWNzIl697pUiKROGT3eJAxfs/f6ncJQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=cU7lUwPMywWwFaIiuebg0S/9gWTvimzm/ZIa9qinqUt/lLrG93baUPNX1+4dGYC0WdEPXmt7KWqpR7DhBPXc7x9ZDztBt1jtrSn9BKNsSS6nSwTbIafE/eDwEV9uBn3azEgtrmcyqXGOBz7BLh80aByFcbKV+krfBbXCeVtJVSM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XIg4l7+R; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XIg4l7+R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B900CC433F1; Wed, 27 Mar 2024 12:26:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711542391; bh=c6I8Ilt7BMRkOWNzIl697pUiKROGT3eJAxfs/f6ncJQ=; h=From:To:Cc:Subject:Date:From; b=XIg4l7+R5UQi2IglUDLt22Q4mTZBnecJFto7c+lBwKKvlwVWYzEpKb9F2kZnHf3cM NVMAGFgEzpwgzv7l6iHdW99T/ZZ4rj6CvS/B1GtxNCH/wTsgrhgEsuDIKFdCAkkeE4 kB8t1yHxFFWRO++ACxiVZHswwcB9GaIzZ1eL08lFUdFyUpcqOQF7p/5TjU1b689mLj PzavNI8TP0iKqPOuZ9tjkejCZm2+uxXH4ujbeaXJR7onTuhaliRRjQJIo1tPPsXFQ3 eHqlKfgzSxIS+KCHwkAwQ5R+YXzJdO8v7/q2nVroLkKEZROELU2qls7bhh/IkNhYfJ E9MDIWbe8BtrA== From: Sasha Levin To: stable@vger.kernel.org, ville.syrjala@linux.intel.com Cc: Jani Nikula , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/i915/dp: Limit SST link rate to <=8.1Gbps" failed to apply to 4.19-stable tree Date: Wed, 27 Mar 2024 08:26:29 -0400 Message-ID: <20240327122629.2841148-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 6061811d72e14f41f71b6a025510920b187bfcca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 8 Feb 2024 17:45:52 +0200 Subject: [PATCH] drm/i915/dp: Limit SST link rate to <=8.1Gbps MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Limit the link rate to HBR3 or below (<=8.1Gbps) in SST mode. UHBR (10Gbps+) link rates require 128b/132b channel encoding which we have not yet hooked up into the SST/no-sideband codepaths. Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20240208154552.14545-1-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_dp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index ab415f41924d7..5045c34a16be1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2356,6 +2356,9 @@ intel_dp_compute_config_limits(struct intel_dp *intel_dp, limits->min_rate = intel_dp_common_rate(intel_dp, 0); limits->max_rate = intel_dp_max_link_rate(intel_dp); + /* FIXME 128b/132b SST support missing */ + limits->max_rate = min(limits->max_rate, 810000); + limits->min_lane_count = 1; limits->max_lane_count = intel_dp_max_lane_count(intel_dp); -- 2.43.0