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 ba7f98a87808..dfe97897127c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6917,12 +6917,9 @@ static void fill_stream_properties_from_drm_display_mode(
 	timing_out->v_border_top = 0;
 	timing_out->v_border_bottom = 0;
 	/* TODO: un-hardcode */
-	if (drm_mode_is_420_only(info, mode_in)
-			&& stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
-		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
-	else if (drm_mode_is_420_also(info, mode_in)
-			&& aconnector
-			&& aconnector->force_yuv420_output)
+	if (drm_mode_is_420_only(info, mode_in) ||
+	    (aconnector && aconnector->force_yuv420_output &&
+	     drm_mode_is_420_also(info, mode_in)))
 		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
 	else if ((connector->display_info.color_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422))
 			&& aconnector