Commit 2b6b7ab4 authored by George Shen's avatar George Shen Committed by Alex Deucher
Browse files

drm/amd/display: Fix DPCD translation for LTTPR AUX_RD_INTERVAL 



[Why]
The translation between the DPCD value and the specified AUX_RD_INTERVAL
in the DP spec do not match.

[How]
Update values to match the spec.

Signed-off-by: default avatarGeorge Shen <george.shen@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarAnson Jacob <Anson.Jacob@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent cd9b0159

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

+3 −3
Original line number Diff line number Diff line
@@ -892,13 +892,13 @@ static uint32_t translate_training_aux_read_interval(uint32_t dpcd_aux_read_inte 


	switch (dpcd_aux_read_interval) {

	case 0x01:

		aux_rd_interval_us = 400;

		aux_rd_interval_us = 4000;

		break;

	case 0x02:

		aux_rd_interval_us = 4000;

		aux_rd_interval_us = 8000;

		break;

	case 0x03:

		aux_rd_interval_us = 8000;

		aux_rd_interval_us = 12000;

		break;

	case 0x04:

		aux_rd_interval_us = 16000;