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-rw-r--r--drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 3a8d6356afc2..f97dfc13a8f0 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2183,6 +2183,7 @@ fill_stream_properties_from_drm_display_mode(struct dc_stream_state *stream,
const struct drm_connector *connector)
{
struct dc_crtc_timing *timing_out = &stream->timing;
+ const struct drm_display_info *info = &connector->display_info;
memset(timing_out, 0, sizeof(struct dc_crtc_timing));
@@ -2191,8 +2192,10 @@ fill_stream_properties_from_drm_display_mode(struct dc_stream_state *stream,
timing_out->v_border_top = 0;
timing_out->v_border_bottom = 0;
/* TODO: un-hardcode */
-
- if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444)
+ if (drm_mode_is_420_only(info, mode_in)
+ && stream->sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A)
+ timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
+ else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444)
&& stream->sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A)
timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444;
else