diff --git a/Documentation/devicetree/bindings/sound/nau8821.txt b/Documentation/devicetree/bindings/sound/nau8821.txt
deleted file mode 100644
index 7c84e7c7327a..000000000000
--- a/Documentation/devicetree/bindings/sound/nau8821.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-Nuvoton NAU88L21 audio codec
-
-This device supports I2C only.
-
-Required properties:
-  - compatible : Must be "nuvoton,nau8821"
-
-  - reg : the I2C address of the device. This is either 0x1B (CSB=0) or 0x54 (CSB=1).
-
-Optional properties:
-  - nuvoton,jkdet-enable: Enable jack detection via JKDET pin.
-  - nuvoton,jkdet-pull-enable: Enable JKDET pin pull. If set - pin pull enabled,
-      otherwise pin in high impedance state.
-  - nuvoton,jkdet-pull-up: Pull-up JKDET pin. If set then JKDET pin is pull up, otherwise pull down.
-  - nuvoton,jkdet-polarity: JKDET pin polarity. 0 - active high, 1 - active low.
-
-  - nuvoton,vref-impedance: VREF Impedance selection
-      0 - Open
-      1 - 25 kOhm
-      2 - 125 kOhm
-      3 - 2.5 kOhm
-
-  - nuvoton,micbias-voltage: Micbias voltage level.
-      0 - VDDA
-      1 - VDDA
-      2 - VDDA * 1.1
-      3 - VDDA * 1.2
-      4 - VDDA * 1.3
-      5 - VDDA * 1.4
-      6 - VDDA * 1.53
-      7 - VDDA * 1.53
-
-  - nuvoton,jack-insert-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
-  - nuvoton,jack-eject-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
-
-  - nuvoton,dmic-clk-threshold: the ADC threshold of DMIC clock.
-  - nuvoton,key_enable: Headset button detection switch.
-
-Example:
-
-  headset: nau8821@1b {
-      compatible = "nuvoton,nau8821";
-      reg = <0x1b>;
-      interrupt-parent = <&gpio>;
-      interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
-      nuvoton,jkdet-enable;
-      nuvoton,jkdet-pull-enable;
-      nuvoton,jkdet-pull-up;
-      nuvoton,jkdet-polarity = <GPIO_ACTIVE_LOW>;
-      nuvoton,vref-impedance = <2>;
-      nuvoton,micbias-voltage = <6>;
-      nuvoton,jack-insert-debounce = <7>;
-      nuvoton,jack-eject-debounce = <7>;
-      nuvoton,dmic-clk-threshold = 3072000;
-  };
diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
new file mode 100644
index 000000000000..728223d20876
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nuvoton,nau8821.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NAU88L21 audio codec
+
+maintainers:
+  - Seven Lee <wtli@nuvoton.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: nuvoton,nau8821
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  nuvoton,jkdet-enable:
+    description: Enable jack detection via JKDET pin.
+    type: boolean
+
+  nuvoton,jkdet-pull-enable:
+    description: Enable JKDET pin pull. If set - pin pull enabled,
+      otherwise pin in high impedance state.
+    type: boolean
+
+  nuvoton,jkdet-pull-up:
+    description: Pull-up JKDET pin. If set then JKDET pin is pull up,
+      otherwise pull down.
+    type: boolean
+
+  nuvoton,jkdet-polarity:
+    description: JKDET pin polarity.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 0 # active high
+      - 1 # active low
+    default: 1
+
+  nuvoton,micbias-voltage:
+    description: MICBIAS output level select.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 0 # VDDA
+      - 1 # VDDA * 1
+      - 2 # VDDA * 1.1
+      - 3 # VDDA * 1.2
+      - 4 # VDDA * 1.3
+      - 5 # VDDA * 1.4
+      - 6 # VDDA * 1.53
+      - 7 # VDDA * 1.53
+    default: 6
+
+  nuvoton,vref-impedance:
+    description: VMID Tie-off impedance select.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 0 # open(default)
+      - 1 # 25KOhms
+      - 2 # 125KOhms
+      - 3 # 2.5KOhms
+    default: 2
+
+  nuvoton,jack-insert-debounce:
+    description: number from 0 to 7 that sets debounce time to 2^(n+2)ms.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 7
+    default: 7
+
+  nuvoton,jack-eject-debounce:
+    description: number from 0 to 7 that sets debounce time to 2^(n+2)ms.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 7
+    default: 0
+
+  nuvoton,dmic-clk-threshold:
+    description: DMIC clock speed expected value. Unit is Hz.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 3072000
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        codec@1b {
+            #sound-dai-cells = <0>;
+            compatible = "nuvoton,nau8821";
+            reg = <0x1b>;
+            interrupt-parent = <&gpio>;
+            interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+            nuvoton,jkdet-enable;
+            nuvoton,jkdet-pull-enable;
+            nuvoton,jkdet-pull-up;
+            nuvoton,jkdet-polarity = <GPIO_ACTIVE_LOW>;
+            nuvoton,micbias-voltage = <6>;
+            nuvoton,vref-impedance = <2>;
+            nuvoton,jack-insert-debounce = <7>;
+            nuvoton,jack-eject-debounce = <0>;
+            nuvoton,dmic-clk-threshold = <3072000>;
+        };
+    };
