Commit 16196776 authored Aug 02, 2018 by Harry Wentland Committed by Alex Deucher Aug 03, 2018

drm/amd/display: Only require EDID read for HDMI and DVI



[Why]
VGA sometimes has trouble retrieving the EDID on very long cables, KVM
switches, or old displays.

[How]
Only require EDID read for HDMI and DVI and exempt other types (DP,
VGA). We currently don't support VGA but if anyone adds support in the
future this might get overlooked.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Suggested-by: Michel Dänzer <michel@daenzer.net>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 01dc285d

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

+2 −1

Original line number	Diff line number	Diff line
		@@ -753,7 +753,8 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
		* even if we have no EDID in order to go to
		* fail-safe mode
		*/
		if (!dc_is_dp_signal(link->connector_signal))
		if (dc_is_hdmi_signal(link->connector_signal) \|\|
		dc_is_dvi_signal(link->connector_signal))
		return false;
		default:
		break;

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