From: Charlene Liu <charlene.liu@amd.com>
Date: Sun, 23 Jul 2017 20:45:45 +0000 (-0400)
Subject: drm/amd/display: fix YCbCr420 deep color mode not supported
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e63825be738ea0bb975aee43b603ac5f0190d7a8;p=linux.git

drm/amd/display: fix YCbCr420 deep color mode not supported

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 a1eabc47558e2..17b28280236f6 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){