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 59904CD11DD for ; Wed, 27 Mar 2024 12:12:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E38C810FB15; Wed, 27 Mar 2024 12:12:38 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="G1580LdN"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id C27FE10FB1B; Wed, 27 Mar 2024 12:12:36 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 44D62614CD; Wed, 27 Mar 2024 12:12:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35B8DC43390; Wed, 27 Mar 2024 12:12:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711541556; bh=Hn5Xtt8cfgQCV4XlMCbeyL8L+BxqJXvYnJjave/+Qxw=; h=From:To:Cc:Subject:Date:From; b=G1580LdNE/uM1DYumzwue+Wgb/1uw015BDWWPdF7EIZwzgKjlxHUI+jPzNGnLMJBg SQuyBSdWOTropYUcyyOSBRATB+Y79OeU5tfOeUa/iQSA2An2HFYxUIfMRlXPt5NoQK vpdHTkAC/gkXidQ2zxiFA29bvjsi/y87hEm4RY1jfFbmo3a2YGVE/9wpuqlBRCY+UP AZYOi4BY7cIKWCt7ADR6aihzYMV4GQV2cw8guXnqgd7u3sne2xk9J9xPuTXJEL4jlv OSzzNuFetfgxkMwXU7TlN1CainkwRAJ4iHwcF3IMLU/aQrS8Z/Fqj1dGXqAB9diJXF TGte1NC5zwD1A== 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 6.1-stable tree Date: Wed, 27 Mar 2024 08:12:34 -0400 Message-ID: <20240327121234.2829619-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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" The patch below does not apply to the 6.1-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