From: Harry Wentland Date: Tue, 9 May 2017 14:41:42 +0000 (-0400) Subject: drm/amd/display: Keep DVI_SINGLE_LINK signal if low clk X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=56dcade33fd3c1681a43ebc250523249be3adbb0;p=openwrt%2Fstaging%2Fblogic.git drm/amd/display: Keep DVI_SINGLE_LINK signal if low clk If user is using DVI->HDMI dongle dual link signal might pose a problem. Keep single link signal type if clk is lower than max tmds clk. Signed-off-by: Harry Wentland Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index ae8b221c85aa..9588217e0220 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1283,9 +1283,12 @@ static void update_stream_signal(struct core_stream *stream) stream->signal = stream->public.output_signal; } - if (stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK && - stream->public.timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ) - stream->signal = SIGNAL_TYPE_DVI_DUAL_LINK; + if (dc_is_dvi_signal(stream->signal)) { + if (stream->public.timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ) + stream->signal = SIGNAL_TYPE_DVI_DUAL_LINK; + else + stream->signal = SIGNAL_TYPE_DVI_SINGLE_LINK; + } } bool resource_is_stream_unchanged(