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Commit 794550c6 authored by Nikola Cornij's avatar Nikola Cornij Committed by Alex Deucher
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drm/amd/display: Read DPCD link caps up to and including DP_ADAPTER_CAP 



DP 1.4 compliance requires 16 bytes to be read when reading link caps,
i.e. it requires DP_ADAPTER_CAP to be included. Included it for all DP
versions because reading more than required won't fail.

Signed-off-by: default avatarNikola Cornij <nikola.cornij@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4ea7fc09

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

+1 −1
Original line number Diff line number Diff line
@@ -2278,7 +2278,7 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data, 


static bool retrieve_link_cap(struct dc_link *link)

{

	uint8_t dpcd_data[DP_TRAINING_AUX_RD_INTERVAL - DP_DPCD_REV + 1];

	uint8_t dpcd_data[DP_ADAPTER_CAP - DP_DPCD_REV + 1];



	union down_stream_port_count down_strm_port_count;

	union edp_configuration_cap edp_config_cap;