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drm/amd/display: Keep DVI_SINGLE_LINK signal if low clk

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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 <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2017-05-09 10:41:42 -04:00 committed by Alex Deucher
parent 46df790c6b
commit 56dcade33f
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/amd/display/dc/core/dc_resource.c
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@ -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(