diff --git a/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml b/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml
index 9f747921e8518dfb8061376b15360e03b36abc7a..4bd345c71eb83eb88cc603e705bda84bd63d7c7c 100644
--- a/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml
+++ b/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml
@@ -36,6 +36,9 @@ properties:
       containing several internal sensors.
     enum: [0, 1]
 
+required:
+  - "#thermal-sensor-cells"
+
 additionalProperties: true
 
 examples: