From 8e2050891ecff4f0daafdf1396c08072a229fab5 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 6 Mar 2014 18:09:52 -0500 Subject: [PATCH] drm/radeon/atom: select the proper number of lanes in transmitter setup commit d03874c881a049a50e12f285077ab1f9fc2686e1 upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/atombios_encoders.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index a42d61571f49f..cf90161395f03 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -1313,7 +1313,7 @@ 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; -- 2.47.2