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drm/amd/display: move MST branch initialize to before link training
some MST capable scaler doesn't like recieving CLEAR_PAYLOAD_ID_TABLE after link training. move branch initialize to before link training Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Signed-off-by: Tony Cheng <tony.cheng@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>
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3 changed files with 19 additions and 0 deletions
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@ -258,6 +258,15 @@ bool dm_helpers_dp_mst_write_payload_allocation_table(
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return true;
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}
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/*
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* Clear payload allocation table before enable MST DP link.
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*/
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void dm_helpers_dp_mst_clear_payload_allocation_table(
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struct dc_context *ctx,
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const struct dc_link *link)
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{}
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/*
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* Polls for ACT (allocation change trigger) handled and sends
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* ALLOCATE_PAYLOAD message.
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@ -1311,6 +1311,9 @@ static enum dc_status enable_link_dp_mst(
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if (link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN)
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return DC_OK;
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/* clear payload table */
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dm_helpers_dp_mst_clear_payload_allocation_table(link->ctx, link);
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/* set the sink to MST mode before enabling the link */
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dp_enable_mst_on_sink(link, true);
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@ -49,6 +49,13 @@ bool dm_helpers_dp_mst_write_payload_allocation_table(
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struct dp_mst_stream_allocation_table *proposed_table,
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bool enable);
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/*
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* Clear payload allocation table before enable MST DP link.
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*/
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void dm_helpers_dp_mst_clear_payload_allocation_table(
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struct dc_context *ctx,
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const struct dc_link *link);
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/*
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* Polls for ACT (allocation change trigger) handled and
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*/
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