From: Mario Limonciello Date: Wed, 27 Aug 2025 01:18:22 +0000 (-0500) Subject: drm/amd/display: Set up pixel encoding for YCBCR422 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=5e76bc677cb7c92b37d8bc66bb67a18922895be2;p=users%2Fhch%2Fmisc.git drm/amd/display: Set up pixel encoding for YCBCR422 [Why] fill_stream_properties_from_drm_display_mode() will not configure pixel encoding to YCBCR422 when the DRM color format supports YCBCR422 but not YCBCR420 or YCBCR4444. Instead it will fallback to RGB. [How] Add support for YCBCR422 in pixel encoding mapping. Suggested-by: Mauri Carvalho Reviewed-by: Wayne Lin Signed-off-by: Mario Limonciello Signed-off-by: Ray Wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- 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 b088cb8ae780..cb22cad279be 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6406,6 +6406,9 @@ static void fill_stream_properties_from_drm_display_mode( && aconnector && aconnector->force_yuv420_output) timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; + else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCBCR422) + && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) + timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR422; else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCBCR444) && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444;