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diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8540.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8540.yaml
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nuvoton,nau8540.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton Technology Corporation NAU85L40 Audio CODEC
+
+maintainers:
+  - John Hsu <KCHSU0@nuvoton.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: nuvoton,nau8540
+
+  reg:
+    maxItems: 1
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        codec@1c {
+            compatible = "nuvoton,nau8540";
+            reg = <0x1c>;
+        };
+    };