diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index d01d2eeed813..651231387043 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -35,6 +35,8 @@ #include "dc_link_ddc.h" #include "dce/dce_aux.h" #include "dmub/inc/dmub_cmd.h" +#include "link_dpcd.h" +#include "include/dal_asic_id.h" #define DC_LOGGER_INIT(logger) @@ -683,6 +685,21 @@ bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc, bool result = false; struct ddc *ddc_pin = ddc->ddc_pin; + if ((ddc->link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + !ddc->link->dc->debug.disable_fixed_vs_aux_timeout_wa && + ASICREV_IS_YELLOW_CARP(ddc->ctx->asic_id.hw_internal_rev)) { + /* Fixed VS workaround for AUX timeout */ + const uint32_t fixed_vs_address = 0xF004F; + const uint8_t fixed_vs_data[4] = {0x1, 0x22, 0x63, 0xc}; + + core_link_write_dpcd(ddc->link, + fixed_vs_address, + fixed_vs_data, + sizeof(fixed_vs_data)); + + timeout = 3072; + } + /* Do not try to access nonexistent DDC pin. */ if (ddc->link->ep_type != DISPLAY_ENDPOINT_PHY) return true; @@ -691,6 +708,7 @@ bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc, ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout); result = true; } + return result; } |