diff --git a/Bindings/iommu/rockchip,iommu.yaml b/Bindings/iommu/rockchip,iommu.yaml
index ba9124f..621dde0 100644
--- a/Bindings/iommu/rockchip,iommu.yaml
+++ b/Bindings/iommu/rockchip,iommu.yaml
@@ -19,9 +19,14 @@
 
 properties:
   compatible:
-    enum:
-      - rockchip,iommu
-      - rockchip,rk3568-iommu
+    oneOf:
+      - enum:
+          - rockchip,iommu
+          - rockchip,rk3568-iommu
+      - items:
+          - enum:
+              - rockchip,rk3588-iommu
+          - const: rockchip,rk3568-iommu
 
   reg:
     items: