From nobody Sat Feb 7 21:23:43 2026 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 9945212DDB9; Wed, 27 Mar 2024 12:07:06 +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=1711541226; cv=none; b=h7U6MehSWMC3hjBw6wfS9ZXbB1B44q4tKvIvskAGgULsRFQmgsHubxa/xGNst/aCmqs7SAIvwfSq8IAgXfPPx0V3uTJAGjgb2+Quq0D/NOpVzisdiPWWjQzBI1cBVReDs4601IHHyW9koBacjTL7A4rNwzPj1kUud1vTUpSjk6Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711541226; c=relaxed/simple; bh=/43Y8blBbhBXwpL1ANH55PCjO3D5pu5+GO6xkE7RQCg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=SzEHLJb5eu3KNx0iios9IhzNnwPb1j1UOrUYo1mcr+BFyFZr1ke764HOdmC0COhb45H/XdGYt/wGnEIGVRuBnZD5C6pPhbMl+RHVc3Ny/nCQ1LqqcyYBWnuncMY3SGMr2eWsY0AzLp2Dr56U2M5t2hLBCuoiU5gKy697Bhvnkvk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UufXcIIu; 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="UufXcIIu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A80DEC43390; Wed, 27 Mar 2024 12:07:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711541226; bh=/43Y8blBbhBXwpL1ANH55PCjO3D5pu5+GO6xkE7RQCg=; h=From:To:Cc:Subject:Date:From; b=UufXcIIu9iW05K0HELPQIwXkuZQclTaZRnl3AS40n1FylnXo23l7aBNHvLl6ZeBgy VvBcrnl/ljxwLjnpCPFIJzA1ha6V8LG05mtmzyN1rzN7cdiQrIsHm8NPddOwzwaAOn 5nczZRW7cedx7JLJ+efviH9aavcaHCSVkLR/C3v/w+i5F2gNN+zdWJF8clKeBpDM1i Kue3ifLZ0PN1F0dS1fT6QYXp6vuMAO+h9J3z31iwz9LVf+mc5skNuWWWKio8TDJWnz NsXqEAekJvKYyt4Fh0QgFLDIF2CcQZrjqqbbnwUAa7Za7C6lMpPOcMum4LBMkGRVaS xRP4jidbvG9Ag== 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 6.8-stable tree Date: Wed, 27 Mar 2024 08:07:04 -0400 Message-ID: <20240327120704.2825093-1-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: quoted-printable The patch below does not apply to the 6.8-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 Reviewed-by: Jani Nikula ------------------ original commit in Linus's tree ------------------ From 6061811d72e14f41f71b6a025510920b187bfcca Mon Sep 17 00:00:00 2001 From: =3D?UTF-8?q?Ville=3D20Syrj=3DC3=3DA4l=3DC3=3DA4?=3D Date: Thu, 8 Feb 2024 17:45:52 +0200 Subject: [PATCH] drm/i915/dp: Limit SST link rate to <=3D8.1Gbps MIME-Version: 1.0 Content-Type: text/plain; charset=3DUTF-8 Content-Transfer-Encoding: 8bit Limit the link rate to HBR3 or below (<=3D8.1Gbps) 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 Syrj=C3=A4l=C3=A4 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 =3D intel_dp_common_rate(intel_dp, 0); limits->max_rate =3D intel_dp_max_link_rate(intel_dp); =20 + /* FIXME 128b/132b SST support missing */ + limits->max_rate =3D min(limits->max_rate, 810000); + limits->min_lane_count =3D 1; limits->max_lane_count =3D intel_dp_max_lane_count(intel_dp); =20 --=20 2.43.0