Commit 10dab193 authored Jan 30, 2018 by Hersen Wu Committed by Alex Deucher Feb 19, 2018

drm/amd/display: VGA black screen from s3 when attached to hook



[Description] For MST, DC already notify MST sink for MST mode, DC stll
check DP SINK DPCD register to see if MST enabled. DP RX firmware may
not handle this properly.

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 9a6995ce

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1465,7 +1465,7 @@ void decide_link_settings(struct dc_stream_state *stream,
		/* MST doesn't perform link training for now
		* TODO: add MST specific link training routine
		*/
		if (is_mst_supported(link)) {
		if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
		*link_setting = link->verified_link_cap;
		return;
		}

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