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| author | Michael Strauss <michael.strauss@amd.com> | 2023-10-13 12:13:28 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-29 16:49:23 -0500 |
| commit | 4fc26c2f912b5d9232dc4432fb1b7bfd6f016be6 (patch) | |
| tree | 6475ec420dd8181dd04e642a85bea0044489d09d /drivers/gpu/drm/amd/display/dc/link | |
| parent | 2e583200907cc43f062321bf751fe4b0960dbecf (diff) | |
| download | linux-stable-4fc26c2f912b5d9232dc4432fb1b7bfd6f016be6.tar.gz linux-stable-4fc26c2f912b5d9232dc4432fb1b7bfd6f016be6.tar.bz2 linux-stable-4fc26c2f912b5d9232dc4432fb1b7bfd6f016be6.zip | |
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: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c index 68096d12f52f..7087cdc9e977 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c @@ -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)); |