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: George Shen <george.shen@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 4149b87714623d4bbaa064b01a510e8018f74e63..78857c97289db6ec2dbb02f074b5edb8d1e958e2 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -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;