diff --git a/inc/saiport.h b/inc/saiport.h
index 5bc78936d..43af30864 100644
--- a/inc/saiport.h
+++ b/inc/saiport.h
@@ -2925,6 +2925,17 @@ typedef enum _sai_port_attr_t
      */
     SAI_PORT_ATTR_LINK_UP_DEBOUNCE_TIMEOUT,
 
+    /**
+     * @brief Port PFC Deadlock Detection timer granularity in milliseconds.
+     *
+     * Specifies the hardware timer granularity for PFC deadlock detection.
+     *
+     * @type sai_map_list_t
+     * @flags CREATE_AND_SET
+     * @default empty
+     */
+    SAI_PORT_ATTR_PFC_TC_DLD_TIMER_INTERVAL,
+
     /**
      * @brief End of attributes
      */
diff --git a/inc/saiswitch.h b/inc/saiswitch.h
index 8232a22ef..140f2f85b 100644
--- a/inc/saiswitch.h
+++ b/inc/saiswitch.h
@@ -3550,6 +3550,17 @@ typedef enum _sai_switch_attr_t
      */
     SAI_SWITCH_ATTR_LINK_UP_DEBOUNCE_TIMEOUT,
 
+    /**
+     * @brief PFC Deadlock Detection timer granularity in milliseconds.
+     *
+     * Specifies the hardware timer granularity for PFC deadlock detection.
+     *
+     * @type sai_map_list_t
+     * @flags CREATE_AND_SET
+     * @default empty
+     */
+    SAI_SWITCH_ATTR_PFC_TC_DLD_TIMER_INTERVAL,
+
     /**
      * @brief End of attributes
      */