diff --git a/fw/wmi_services.h b/fw/wmi_services.h
index 74ba7ba35e..75164b688e 100644
--- a/fw/wmi_services.h
+++ b/fw/wmi_services.h
@@ -399,6 +399,7 @@ typedef  enum  {
     WMI_SERVICE_DELETE_ALL_PEER_SUPPORT = 214, /* target supports cmd to delete all peers within a vdev */
     WMI_SERVICE_DYNAMIC_HW_MODE_SWITCH_SUPPORT = 215, /* target supports Dynamic HW mode switch */
     WMI_SERVICE_MSDU_FLOW_OVERRIDE_BY_HOST = 216, /* target supports flow override feature */
+    WMI_SERVICE_WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENT= 217, /* target will send WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENT */
 
     /******* ADD NEW SERVICES HERE *******/
 
diff --git a/fw/wmi_tlv_defs.h b/fw/wmi_tlv_defs.h
index e315c7b479..a027fb9e59 100644
--- a/fw/wmi_tlv_defs.h
+++ b/fw/wmi_tlv_defs.h
@@ -991,6 +991,7 @@ typedef enum {
     WMITLV_TAG_STRUC_wmi_twt_btwt_remove_sta_complete_event_fixed_param,
     WMITLV_TAG_STRUC_wmi_vdev_delete_all_peer_cmd_fixed_param,
     WMITLV_TAG_STRUC_wmi_vdev_delete_all_peer_resp_event_fixed_param,
+    WMITLV_TAG_STRUC_wmi_chan_rf_characterization_info_event_fixed_param,
 } WMITLV_TAG_ID;
 
 /*
@@ -1624,6 +1625,7 @@ typedef enum {
     OP(WMI_TWT_BTWT_INVITE_STA_COMPLETE_EVENTID) \
     OP(WMI_TWT_BTWT_REMOVE_STA_COMPLETE_EVENTID) \
     OP(WMI_VDEV_DELETE_ALL_PEER_RESP_EVENTID) \
+    OP(WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENTID) \
     /* add new EVT_LIST elements above this line */
 
 
@@ -4042,6 +4044,11 @@ WMITLV_CREATE_PARAM_STRUC(WMI_SERVICE_AVAILABLE_EVENTID);
     WMITLV_ELEM(id,op,buf,len, WMITLV_TAG_ARRAY_STRUC, WMI_CHAN_RF_CHARACTERIZATION_INFO, wmi_chan_rf_characterization_info, WMITLV_SIZE_VAR)
 WMITLV_CREATE_PARAM_STRUC(WMI_SERVICE_READY_EXT_EVENTID);
 
+#define WMITLV_TABLE_WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENTID(id,op,buf,len) \
+     WMITLV_ELEM(id,op,buf,len, WMITLV_TAG_STRUC_wmi_chan_rf_characterization_info_event_fixed_param, wmi_chan_rf_characterization_info_event_fixed_param, fixed_param, WMITLV_SIZE_FIX) \
+     WMITLV_ELEM(id,op,buf,len, WMITLV_TAG_ARRAY_STRUC, WMI_CHAN_RF_CHARACTERIZATION_INFO, wmi_chan_rf_characterization_info, WMITLV_SIZE_VAR)
+WMITLV_CREATE_PARAM_STRUC(WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENTID);
+
 /* iface combination indication event */
 #define WMITLV_TABLE_WMI_IFACE_COMBINATION_IND_EVENTID(id,op,buf,len) \
     WMITLV_ELEM(id,op,buf,len, WMITLV_TAG_STRUC_wmi_wlanfw_iface_cmb_ind_event_fixed_param, wmi_wlanfw_iface_cmb_ind_event_fixed_param, fixed_param, WMITLV_SIZE_FIX) \
diff --git a/fw/wmi_unified.h b/fw/wmi_unified.h
index 11e08808bf..f176b72a46 100644
--- a/fw/wmi_unified.h
+++ b/fw/wmi_unified.h
@@ -1336,6 +1336,7 @@ typedef enum {
     /* Event to report a rogue ap info that is detected in fw */
     WMI_PDEV_RAP_INFO_EVENTID,
 
+    WMI_CHAN_RF_CHARACTERIZATION_INFO_EVENTID,
 
     /* VDEV specific events */
     /** VDEV started event in response to VDEV_START request */
@@ -2534,6 +2535,16 @@ typedef struct {
      */
 } wmi_service_ready_ext_event_fixed_param;
 
+typedef struct {
+    A_UINT32 tlv_header; /* TLV tag and len; tag equals WMITLV_TAG_STRUC_wmi_chan_rf_characterization_info_event_fixed_param */
+    /*
+     * A variable-length TLV array of wmi_chan_rf_characterization_info will
+     * follow this fixed_param TLV, containing rx characterization info for
+     * primary channels.
+     * WMI_CHAN_RF_CHARACTERIZATION_INFO wmi_chan_rf_characterization_info[];
+     */
+} wmi_chan_rf_characterization_info_event_fixed_param;
+
 typedef enum {
     WMI_FW_STA_RTT_INITR =     0x00000001,
     WMI_FW_STA_RTT_RESPR =     0x00000002,
diff --git a/fw/wmi_version.h b/fw/wmi_version.h
index 4004b906fe..f856f1d7a7 100644
--- a/fw/wmi_version.h
+++ b/fw/wmi_version.h
@@ -36,7 +36,7 @@
 #define __WMI_VER_MINOR_    0
 /** WMI revision number has to be incremented when there is a
  *  change that may or may not break compatibility. */
-#define __WMI_REVISION_ 687
+#define __WMI_REVISION_ 688
 
 /** The Version Namespace should not be normally changed. Only
  *  host and firmware of the same WMI namespace will work