drm/amd/powerplay: fix PSI not enabled by kmd

cherry-pick from windows driver.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/ppatomfwctrl.c

@@ -142,7 +142,7 @@ int pp_atomfwctrl_get_voltage_table_v4(struct pp_hwmgr *hwmgr,
 		}
 	} else if (voltage_mode == VOLTAGE_OBJ_SVID2) {
 		voltage_table->psi1_enable =
-			voltage_object->svid2_voltage_obj.loadline_psi1 & 0x1;
+			(voltage_object->svid2_voltage_obj.loadline_psi1 & 0x20) >> 5;
 		voltage_table->psi0_enable =
 			voltage_object->svid2_voltage_obj.psi0_enable & 0x1;
 		voltage_table->max_vid_step =

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -2522,6 +2522,9 @@ static int vega10_init_smc_table(struct pp_hwmgr *hwmgr)
 	pp_table->DisplayDpmVoltageMode =
 			(uint8_t)(table_info->uc_dcef_dpm_voltage_mode);
 
+	data->vddc_voltage_table.psi0_enable = voltage_table.psi0_enable;
+	data->vddc_voltage_table.psi1_enable = voltage_table.psi1_enable;
+
 	if (data->registry_data.ulv_support &&
 			table_info->us_ulv_voltage_offset) {
 		result = vega10_populate_ulv_state(hwmgr);