6.6-stable review patch. If anyone has any objections, please let me know.
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From: Harry VanZyllDeJong hvanzyll@amd.com
[ Upstream commit 6571bef25fe48c642f7a69ccf7c3198b317c136a ]
[Why] eDP may not be connected to the GPU on driver start causing fail enumeration.
[How] Move the virtual signal type check before the eDP connector signal check.
Reviewed-by: Wenjing Liu wenjing.liu@amd.com Signed-off-by: Harry VanZyllDeJong hvanzyll@amd.com Signed-off-by: Roman Li roman.li@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c index 1e621eae9b7da..adf0ef8b70e4b 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c @@ -920,6 +920,9 @@ bool link_decide_link_settings(struct dc_stream_state *stream, * TODO: add MST specific link training routine */ decide_mst_link_settings(link, link_setting); + } else if (stream->signal == SIGNAL_TYPE_VIRTUAL) { + link_setting->lane_count = LANE_COUNT_FOUR; + link_setting->link_rate = LINK_RATE_HIGH3; } else if (link->connector_signal == SIGNAL_TYPE_EDP) { /* enable edp link optimization for DSC eDP case */ if (stream->timing.flags.DSC) {