diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 28ad97801032..41fa7958592d 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -184,6 +184,8 @@ struct iommu_resv_region {
  * @domain_window_enable: Configure and enable a particular window for a domain
  * @domain_window_disable: Disable a particular window for a domain
  * @of_xlate: add OF master IDs to iommu grouping
+ * @is_attach_deferred: Check if domain attach should be deferred from iommu
+ *                      driver init to device driver init (default no)
  * @pgsize_bitmap: bitmap of all possible supported page sizes
  */
 struct iommu_ops {