diff --git a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
index 31e106ef913d..09e679c1a9de 100644
--- a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
@@ -52,6 +52,11 @@ properties:
   reg:
     maxItems: 1
 
+  samsung,sysreg:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to system registers interface.
+
 required:
   - compatible
   - "#clock-cells"
@@ -166,6 +171,18 @@ allOf:
             - const: bus
             - const: ip
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: google,gs101-cmu-top
+    then:
+      properties:
+        samsung,sysreg: false
+    else:
+      required:
+        - samsung,sysreg
+
 additionalProperties: false
 
 examples:
@@ -175,7 +192,7 @@ examples:
 
     cmu_top: clock-controller@1e080000 {
         compatible = "google,gs101-cmu-top";
-        reg = <0x1e080000 0x8000>;
+        reg = <0x1e080000 0x10000>;
         #clock-cells = <1>;
         clocks = <&ext_24_5m>;
         clock-names = "oscclk";