drm/amd/powrplay: workaround Memory EDC Error for certain partner boards.

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/hwmgr.c

@@ -77,6 +77,8 @@ int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 	hwmgr->chip_family = pp_init->chip_family;
 	hwmgr->chip_id = pp_init->chip_id;
 	hwmgr->hw_revision = pp_init->rev_id;
+	hwmgr->sub_sys_id = pp_init->sub_sys_id;
+	hwmgr->sub_vendor_id = pp_init->sub_vendor_id;
 	hwmgr->usec_timeout = AMD_MAX_USEC_TIMEOUT;
 	hwmgr->power_source = PP_PowerSource_AC;
 

drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c

@@ -3133,7 +3133,10 @@ int polaris10_patch_voltage_workaround(struct pp_hwmgr *hwmgr)
 			table_info->vddc_lookup_table;
 	uint32_t i;
 
-	if (hwmgr->chip_id == CHIP_POLARIS10 && hwmgr->hw_revision == 0xC7) {
+	if (hwmgr->chip_id == CHIP_POLARIS10 && hwmgr->hw_revision == 0xC7 &&
+			((hwmgr->sub_sys_id == 0xb37 && hwmgr->sub_vendor_id == 0x1002) ||
+		    (hwmgr->sub_sys_id == 0x4a8 && hwmgr->sub_vendor_id == 0x1043) ||
+		    (hwmgr->sub_sys_id == 0x9480 && hwmgr->sub_vendor_id == 0x1682))) {
 		if (lookup_table->entries[dep_mclk_table->entries[dep_mclk_table->count-1].vddInd].us_vdd >= 1000)
 			return 0;