Commit e749dd10 authored May 25, 2023 by Hersen Wu Committed by Alex Deucher Jun 13, 2023

drm/amd/display: edp do not add non-edid timings

[Why] most edp support only timings from edid. applying
non-edid timings, especially those timings out of edp
bandwidth, may damage edp.

[How] do not add non-edid timings for edp.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 34e5a543

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -7196,6 +7196,12 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
		drm_add_modes_noedid(connector, 1920, 1080);
		} else {
		amdgpu_dm_connector_ddc_get_modes(connector, edid);
		/* most eDP supports only timings from its edid,
		* usually only detailed timings are available
		* from eDP edid. timings which are not from edid
		* may damage eDP
		*/
		if (connector->connector_type != DRM_MODE_CONNECTOR_eDP)
		amdgpu_dm_connector_add_common_modes(encoder, connector);
		amdgpu_dm_connector_add_freesync_modes(connector, edid);
		}