diff --git a/fw/wmi_unified.h b/fw/wmi_unified.h
index cd56e2f2761b..9c2c77b153d4 100644
--- a/fw/wmi_unified.h
+++ b/fw/wmi_unified.h
@@ -2833,6 +2833,16 @@ typedef struct {
      * 0 - not enabled
      */
     A_UINT32 chwidth_num_peer_caps;
+
+    /*
+     * Whether preamble puncturing is supported by FW, and if so, for which
+     * bandwidths.  The possible values for this field are listed below.
+     *   0: preamble puncturing is not supported
+     *  80: puncturing supported within channels of at least 80 MHz bandwidth
+     * 160: puncturing supported within channels of at least 160 MHz bandwidth
+     * 320: puncturing supported within 320 MHz channels
+     */
+    A_UINT32 preamble_puncture_bw;
 } wmi_service_ready_ext2_event_fixed_param;
 
 typedef struct {
@@ -6818,6 +6828,16 @@ typedef enum {
      */
     WMI_PDEV_PARAM_ENABLE_MBSSID_CTRL_FRAME,
 
+    /*
+     * Parameter to set preamble punctured band as a bitmask, i.e.
+     * which 20MHz in the 80MHz bandwidth or 40MHz in 160MHz bandwidth.
+     * E.g. if first 20MHz is the primary and preamble puncturing is
+     * desired for 3rd 20Mhz, then the host will send 0x0100.
+     * FW doesn't expect the primary 20MHz to be punctured.
+     * This param is required only for 11ax release.
+     */
+    WMI_PDEV_PARAM_SET_PREAM_PUNCT_BW,
+
 } WMI_PDEV_PARAM;
 
 #define WMI_PDEV_ONLY_BSR_TRIG_IS_ENABLED(trig_type) WMI_GET_BITS(trig_type, 0, 1)
diff --git a/fw/wmi_version.h b/fw/wmi_version.h
index 5adc74488d80..5a1cecb6233e 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_ 848
+#define __WMI_REVISION_ 849
 
 /** The Version Namespace should not be normally changed. Only
  *  host and firmware of the same WMI namespace will work