diff --git a/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml b/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
index f32410890589..6feb5a09c184 100644
--- a/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
@@ -54,6 +54,10 @@ properties:
   resets:
     maxItems: 1
 
+  "#clock-cells":
+    description: Configure the I2S device as MCLK clock provider.
+    const: 0
+
 required:
   - compatible
   - "#sound-dai-cells"