diff --git a/wmi/inc/wmi_unified_param.h b/wmi/inc/wmi_unified_param.h
index 2d23dfdd3bd3..3528f8787b60 100644
--- a/wmi/inc/wmi_unified_param.h
+++ b/wmi/inc/wmi_unified_param.h
@@ -5348,6 +5348,7 @@ typedef enum {
 	wmi_service_data_stall_recovery_support,
 	wmi_service_tx_compl_tsf64,
 	wmi_service_vdev_delete_all_peer,
+	wmi_service_three_way_coex_config_legacy,
 	wmi_services_max,
 } wmi_conv_service_ids;
 #define WMI_SERVICE_UNAVAILABLE 0xFFFF
@@ -5469,6 +5470,7 @@ struct wmi_host_fw_abi_ver {
  * @twt_ap_sta_count: Max no of STA with which TWT sessions can be formed
  *                    by the AP
  * @max_bssid_indicator: max number of MBSS VAPs
+ * @three_way_coex_config_legacy_en: enable three way coex legacy feature
  */
 typedef struct {
 	uint32_t num_vdevs;
@@ -5551,6 +5553,7 @@ typedef struct {
 	uint32_t eapol_minrate_set:1,
 		 eapol_minrate_ac_set:2;
 	bool tstamp64_en;
+	bool three_way_coex_config_legacy_en;
 } target_resource_config;
 
 /**
diff --git a/wmi/src/wmi_unified_tlv.c b/wmi/src/wmi_unified_tlv.c
index 6fe44ecef3c9..dffa985b8929 100644
--- a/wmi/src/wmi_unified_tlv.c
+++ b/wmi/src/wmi_unified_tlv.c
@@ -6501,6 +6501,10 @@ void wmi_copy_resource_config(wmi_resource_config *resource_cfg,
 		WMI_RSRC_CFG_FLAG_TX_COMPLETION_TX_TSF64_ENABLE_SET(
 						resource_cfg->flag1, 1);
 
+	if (tgt_res_cfg->three_way_coex_config_legacy_en)
+		WMI_RSRC_CFG_FLAG_THREE_WAY_COEX_CONFIG_LEGACY_SUPPORT_SET(
+						resource_cfg->flag1, 1);
+
 	wmi_copy_twt_resource_config(resource_cfg, tgt_res_cfg);
 	resource_cfg->peer_map_unmap_v2_support =
 		tgt_res_cfg->peer_map_unmap_v2;
@@ -12540,6 +12544,8 @@ static void populate_tlv_service(uint32_t *wmi_service)
 			WMI_SERVICE_DSM_ROAM_FILTER;
 	wmi_service[wmi_service_vdev_delete_all_peer] =
 			WMI_SERVICE_DELETE_ALL_PEER_SUPPORT;
+	wmi_service[wmi_service_three_way_coex_config_legacy] =
+			WMI_SERVICE_THREE_WAY_COEX_CONFIG_LEGACY;
 }
 
 /**