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diff --git a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
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+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/simple-audio-mux.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Simple Audio Multiplexer
+
+maintainers:
+  - Alexandre Belloni <aleandre.belloni@bootlin.com>
+
+description: |
+  Simple audio multiplexers are driven using gpios, allowing to select which of
+  their input line is connected to the output line.
+
+allOf:
+  - $ref: name-prefix.yaml#
+
+properties:
+  compatible:
+    const: simple-audio-mux
+
+  mux-gpios:
+    description: |
+      GPIOs used to select the input line.
+
+  sound-name-prefix: true
+
+required:
+  - compatible
+  - mux-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    mux {
+        compatible = "simple-audio-mux";
+        mux-gpios = <&gpio 3 0>;
+    };