From: Charlene Liu <charlene.liu@amd.com>
Date: Sun, 23 Jul 2017 16:45:45 -0400
Subject: drm/amd/display: fix YCbCr420 deep color mode not supported
Git-commit: e63825be738ea0bb975aee43b603ac5f0190d7a8
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 2 ++
1 file changed, 2 insertions(+)
--- 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){