diff options
| author | Charlene Liu <charlene.liu@amd.com> | 2017-06-05 16:54:33 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:07:51 -0400 |
| commit | 909e8c9e417945f313b68ed6c5a559fe5266be8b (patch) | |
| tree | f5cd1d00de4a2387ddbdf843d0985fdbe3bf6616 | |
| parent | fc82c5cb306d6f201cdee2c4c092ff49c6929634 (diff) | |
| download | linux-909e8c9e417945f313b68ed6c5a559fe5266be8b.tar.bz2 | |
drm/amd/display: fix single link black screen
Don't fall back to dual link DVI mode if the connector
is single Link only.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 |
1 files changed, 3 insertions, 1 deletions
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 e4a6636fd829..b7f31b985b4f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1204,6 +1204,7 @@ bool resource_validate_attach_surfaces( /* Maximum TMDS single link pixel clock 165MHz */ #define TMDS_MAX_PIXEL_CLOCK_IN_KHZ 165000 +#define TMDS_MAX_PIXEL_CLOCK_IN_KHZ_UPMOST 297000 static void set_stream_engine_in_use( struct resource_context *res_ctx, @@ -1331,7 +1332,8 @@ static void update_stream_signal(struct core_stream *stream) } if (dc_is_dvi_signal(stream->signal)) { - if (stream->public.timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ) + if (stream->public.timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ_UPMOST && + stream->public.sink->sink_signal != SIGNAL_TYPE_DVI_SINGLE_LINK) stream->signal = SIGNAL_TYPE_DVI_DUAL_LINK; else stream->signal = SIGNAL_TYPE_DVI_SINGLE_LINK; |