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| author | Eric Yang <Eric.Yang2@amd.com> | 2017-11-10 10:44:24 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-14 11:00:27 -0500 |
| commit | 73da927b083737a8923c1bbc850274adffca1257 (patch) | |
| tree | fd718690baeba7d63e0294b5f9564cf971fc1db0 /drivers/gpu/drm/amd | |
| parent | f23d558466cf14e58ec7f666a3af1a6708681bcc (diff) | |
| download | lwn-73da927b083737a8923c1bbc850274adffca1257.tar.gz lwn-73da927b083737a8923c1bbc850274adffca1257.zip | |
drm/amd/display: fix missing pixel clock adjustment for dongle
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Andrew Jiang <Andrew.Jiang@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 0b7058fddc2e..13995893cac5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1801,7 +1801,7 @@ static void disable_link(struct dc_link *link, enum signal_type signal) link->link_enc->funcs->disable_output(link->link_enc, signal); } -bool dp_active_dongle_validate_timing( +static bool dp_active_dongle_validate_timing( const struct dc_crtc_timing *timing, const struct dc_dongle_caps *dongle_caps) { @@ -1833,6 +1833,8 @@ bool dp_active_dongle_validate_timing( /* Check Color Depth and Pixel Clock */ if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) required_pix_clk /= 2; + else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) + required_pix_clk = required_pix_clk * 2 / 3; switch (timing->display_color_depth) { case COLOR_DEPTH_666: |