Commit d03874c8 authored Mar 06, 2014 by Alex Deucher

drm/radeon/atom: select the proper number of lanes in transmitter setup

We need to check for DVI vs. HDMI when setting up duallink since
HDMI is single link only.  Fixes 4k modes on newer asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75223



Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

parent 13714323

drivers/gpu/drm/radeon/atombios_encoders.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1314,7 +1314,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
		}
		if (is_dp)
		args.v5.ucLaneNum = dp_lane_count;
		else if (radeon_encoder->pixel_clock > 165000)
		else if (radeon_dig_monitor_is_duallink(encoder, radeon_encoder->pixel_clock))
		args.v5.ucLaneNum = 8;
		else
		args.v5.ucLaneNum = 4;