Commit 4fc26c2f authored by Michael Strauss's avatar Michael Strauss Committed by Alex Deucher
Browse files

drm/amd/display: Update Fixed VS/PE Retimer Sequence 



[WHY/HOW]
Add a new AUX sequence provided by vendor to improve
interop with specific display configurations.

Reviewed-by: default avatarWenjing Liu <wenjing.liu@amd.com>
Acked-by: default avatarTom Chung <chiahsuan.chung@amd.com>
Signed-off-by: default avatarMichael Strauss <michael.strauss@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2e583200

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c

+10 −0
Original line number Diff line number Diff line
@@ -205,6 +205,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence_legacy( 
	const uint8_t vendor_lttpr_write_data_4lane_3[4] = {0x1, 0x6D, 0xF2, 0x18};

	const uint8_t vendor_lttpr_write_data_4lane_4[4] = {0x1, 0x6C, 0xF2, 0x03};

	const uint8_t vendor_lttpr_write_data_4lane_5[4] = {0x1, 0x03, 0xF3, 0x06};

	const uint8_t vendor_lttpr_write_data_dpmf[4] = {0x1, 0x6, 0x70, 0x87};

	enum link_training_result status = LINK_TRAINING_SUCCESS;

	uint8_t lane = 0;

	union down_spread_ctrl downspread = {0};
@@ -293,6 +294,10 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence_legacy( 
		DP_DOWNSPREAD_CTRL,

		lt_settings->link_settings.link_spread);



	link_configure_fixed_vs_pe_retimer(link->ddc,

			&vendor_lttpr_write_data_dpmf[0],

			sizeof(vendor_lttpr_write_data_dpmf));



	if (lt_settings->link_settings.lane_count == LANE_COUNT_FOUR) {

		link_configure_fixed_vs_pe_retimer(link->ddc,

				&vendor_lttpr_write_data_4lane_1[0], sizeof(vendor_lttpr_write_data_4lane_1));
@@ -552,6 +557,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence( 
	const uint8_t vendor_lttpr_write_data_4lane_3[4] = {0x1, 0x6D, 0xF2, 0x18};

	const uint8_t vendor_lttpr_write_data_4lane_4[4] = {0x1, 0x6C, 0xF2, 0x03};

	const uint8_t vendor_lttpr_write_data_4lane_5[4] = {0x1, 0x03, 0xF3, 0x06};

	const uint8_t vendor_lttpr_write_data_dpmf[4] = {0x1, 0x6, 0x70, 0x87};

	enum link_training_result status = LINK_TRAINING_SUCCESS;

	uint8_t lane = 0;

	union down_spread_ctrl downspread = {0};
@@ -639,6 +645,10 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence( 
		DP_DOWNSPREAD_CTRL,

		lt_settings->link_settings.link_spread);



	link_configure_fixed_vs_pe_retimer(link->ddc,

			&vendor_lttpr_write_data_dpmf[0],

			sizeof(vendor_lttpr_write_data_dpmf));



	if (lt_settings->link_settings.lane_count == LANE_COUNT_FOUR) {

		link_configure_fixed_vs_pe_retimer(link->ddc,

				&vendor_lttpr_write_data_4lane_1[0], sizeof(vendor_lttpr_write_data_4lane_1));