diff --git a/Documentation/devicetree/bindings/thermal/rockchip-thermal.yaml b/Documentation/devicetree/bindings/thermal/rockchip-thermal.yaml
index 573f447cc26e..9fa5c4c49d76 100644
--- a/Documentation/devicetree/bindings/thermal/rockchip-thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.yaml
@@ -119,6 +119,21 @@ required:
   - resets
 
 allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - rockchip,px30-tsadc
+              - rockchip,rk3366-tsadc
+              - rockchip,rk3399-tsadc
+              - rockchip,rk3568-tsadc
+    then:
+      required:
+        - rockchip,grf
+    else:
+      properties:
+        rockchip,grf: false
   - if:
       not:
         properties: