diff --git a/fw/wmi_unified.h b/fw/wmi_unified.h
index f9a371bd94..4c044f99e1 100644
--- a/fw/wmi_unified.h
+++ b/fw/wmi_unified.h
@@ -9323,6 +9323,18 @@ typedef enum {
      * b'8-b'15 indicate the MCS (MCS value can be from 0-15)
      * b'16 Enable or disable nss cap
      * b'17 Enable or disable mcs cap
+     * b'18 To determine the direction for caping DL_direction
+     * b'19 To determine the direction for caping UL_direction
+     *
+     * For backwards compatibility, if bits 18+19 are both
+     * cleared, then the rate cap applies to both DL and UL.
+     * To summarize:
+     *     bit 19 | bit 18 | rate cap applied
+     *     -------+--------+------------------
+     *        0   |    0   | cap rates for both UL and DL
+     *        0   |    1   | cap rates only for DL
+     *        1   |    0   | cap rates only for UL
+     *        1   |    1   | cap rates for both UL and DL
      */
     WMI_PDEV_PARAM_RATE_UPPER_CAP,
 
@@ -9624,6 +9636,10 @@ typedef enum {
 #define WMI_PDEV_UPPER_CAP_NSS_VALID_SET(_value, value) WMI_SET_BITS(_value, 16, 1, value)
 #define WMI_PDEV_UPPER_CAP_MCS_VALID_GET(value) WMI_GET_BITS(value, 17, 1)
 #define WMI_PDEV_UPPER_CAP_MCS_VALID_SET(_value, value) WMI_SET_BITS(_value, 17, 1, value)
+#define WMI_PDEV_UPPER_CAP_DL_DIR_GET(value) WMI_GET_BITS(value, 18, 1)
+#define WMI_PDEV_UPPER_CAP_DL_DIR_SET(_value, value) WMI_SET_BITS(_value, 18, 1, value)
+#define WMI_PDEV_UPPER_CAP_UL_DIR_GET(value) WMI_GET_BITS(value, 19, 1)
+#define WMI_PDEV_UPPER_CAP_UL_DIR_SET(_value, value) WMI_SET_BITS(_value, 19, 1, value)
 
 #define WMI_PDEV_RATE_DROP_NUM_MCS_GET(value) WMI_GET_BITS(value, 0, 8)
 #define WMI_PDEV_RATE_DROP_NUM_MCS_SET(_value, value) WMI_SET_BITS(_value, 0, 8, value)
diff --git a/fw/wmi_version.h b/fw/wmi_version.h
index c306ff9de6..ca6cf2e77b 100644
--- a/fw/wmi_version.h
+++ b/fw/wmi_version.h
@@ -37,7 +37,7 @@
 #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_ 1454
+#define __WMI_REVISION_ 1455
 
 /** The Version Namespace should not be normally changed. Only
  *  host and firmware of the same WMI namespace will work