Commit 1e9653a4 authored by Charlene Liu's avatar Charlene Liu Committed by Alex Deucher
Browse files

drm/amd/display: reset dpcd_cap.dpcd_rev for passive dongle. 



[why]
currently dc has never reset this dpcd_cap.dpcd_rev.

[how]
ideally  we should reset this before redo detection.
change the passive dongle only for now to reduce the impact.

Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ad43a647

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

+2 −0
Original line number Diff line number Diff line
@@ -541,6 +541,7 @@ static void link_disconnect_sink(struct dc_link *link) 
	}



	link->dpcd_sink_count = 0;

	//link->dpcd_caps.dpcd_rev.raw = 0;

}



static void link_disconnect_remap(struct dc_sink *prev_sink, struct dc_link *link)
@@ -742,6 +743,7 @@ static bool detect_dp(struct dc_link *link, 
								sink_caps,

								audio_support);

		link->dpcd_caps.dongle_type = sink_caps->dongle_type;

		link->dpcd_caps.dpcd_rev.raw = 0;

	}



	return true;