diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
index a1eabc47558e2b8a46902342c6873680eaf48463..17b28280236f617b30b9b60952f9882bcb2f5897 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
@@ -858,6 +858,8 @@ bool dcn_validate_bandwidth(
 				- pipe->stream->public.timing.v_front_porch;
 		v->vactive[input_idx] = pipe->stream->public.timing.v_addressable;
 		v->pixel_clock[input_idx] = pipe->stream->public.timing.pix_clk_khz / 1000.0f;
+		if (pipe->stream->public.timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
+			v->pixel_clock[input_idx] /= 2;
 
 
 		if (!pipe->surface){