FAILED: Patch "drm/i915/dp: Limit SST link rate to <=8.1Gbps" failed to apply to 5.10-stable tree
Sasha Levin
maintainerThe patch below does not apply to the 5.10-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 <[email protected]>.
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?= <[email protected]>
Date: Thu, 8 Feb 2024 17:45:52 +0200
Subject: [PATCH] drm/i915/dp: Limit SST link rate to <=8.1Gbps
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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.
--- drivers/gpu/drm/i915/display/intel_dp.c | 3 +++ 1 file changed, 3 insertions(+)
drivers/gpu/drm/i915/display/intel_dp.c +3 -0
@@ -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);
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2.43.0