From: Jinze Xu <jinze...@amd.com>

[Why]
Some mst dock can't translate DP to HDMI properly.

[How]
Bypass YCbCr timings on specific MST device.

Signed-off-by: Jinze Xu <jinze...@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_sink.c | 1 +
 drivers/gpu/drm/amd/display/dc/dc.h           | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
index a249a0e5edd0..9e16af22e4aa 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
@@ -54,6 +54,7 @@ static bool dc_sink_construct(struct dc_sink *sink, const 
struct dc_sink_init_da
        sink->ctx = link->ctx;
        sink->dongle_max_pix_clk = init_params->dongle_max_pix_clk;
        sink->converter_disable_audio = init_params->converter_disable_audio;
+       sink->is_mst_legacy = init_params->sink_is_legacy;
        sink->dc_container_id = NULL;
        sink->sink_id = init_params->link->ctx->dc_sink_id_count;
        // increment dc_sink_id_count because we don't want two sinks with same 
ID
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h 
b/drivers/gpu/drm/amd/display/dc/dc.h
index 1b30804f56db..89cce79c950d 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1079,7 +1079,7 @@ struct dc_sink {
        void *priv;
        struct stereo_3d_features features_3d[TIMING_3D_FORMAT_MAX];
        bool converter_disable_audio;
-
+       bool is_mst_legacy;
        struct dc_sink_dsc_caps dsc_caps;
        struct dc_sink_fec_caps fec_caps;
 
@@ -1106,6 +1106,7 @@ struct dc_sink_init_data {
        struct dc_link *link;
        uint32_t dongle_max_pix_clk;
        bool converter_disable_audio;
+       bool sink_is_legacy;
 };
 
 struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params);
-- 
2.26.0

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