diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/isil,isl68137.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/isil,isl68137.yaml
index bac5f8e352aa..3dc7f15484d2 100644
--- a/Documentation/devicetree/bindings/hwmon/pmbus/isil,isl68137.yaml
+++ b/Documentation/devicetree/bindings/hwmon/pmbus/isil,isl68137.yaml
@@ -56,6 +56,7 @@ properties:
       - renesas,raa228228
       - renesas,raa229001
       - renesas,raa229004
+      - renesas,raa229621
 
   reg:
     maxItems: 1