From 5827520152f22e3cf696a27f75e98455156b5674 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 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 Cc: stable@vger.kernel.org (cherry picked from commit d03874c881a049a50e12f285077ab1f9fc2686e1) BugLink: http://bugs.launchpad.net/bugs/1295032 Signed-off-by: Andy Whitcroft --- 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 a42d615..cf90161 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; -- 1.9.0