diff mbox series

[v3] ASoC: dt-bindings: nau8825: Convert to dtschema

Message ID 20230510091914.590752-1-CTLIN0@nuvoton.com
State Superseded
Headers show
Series [v3] ASoC: dt-bindings: nau8825: Convert to dtschema | expand

Commit Message

David Lin May 10, 2023, 9:19 a.m. UTC
Convert the NAU8825 audio CODEC bindings to DT schema.

Signed-off-by: David Lin <CTLIN0@nuvoton.com>

Changes:
V2 -> V3:
  - refine node name from "nau8825" to "codec" for generic purpose

V1 -> V2:
  - add interrupts properties
  - add maximum to nuvoton,jack-insert-debounce and nuvoton,jack-eject-debounce properites
  - add a enum item for nuvoton,short-key-debounce properites
  - add default value for most properites
  - add maxItems to clocks properites and mclk entries to clock-names properites
  - refine wrong indentation from clocks and clock-names
  - refine dts example for interrupts and clocks
  - remove headset label from dts example
---
 .../devicetree/bindings/sound/nau8825.txt     | 111 --------
 .../bindings/sound/nuvoton,nau8825.yaml       | 242 ++++++++++++++++++
 2 files changed, 242 insertions(+), 111 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/nau8825.txt
 create mode 100644 Documentation/devicetree/bindings/sound/nuvoton,nau8825.yaml

Comments

Krzysztof Kozlowski May 11, 2023, 10:10 a.m. UTC | #1
On 10/05/2023 11:19, David Lin wrote:
> Convert the NAU8825 audio CODEC bindings to DT schema.
> 
> Signed-off-by: David Lin <CTLIN0@nuvoton.com>
> 
> Changes:
> V2 -> V3:
>   - refine node name from "nau8825" to "codec" for generic purpose
> 
> V1 -> V2:
>   - add interrupts properties
>   - add maximum to nuvoton,jack-insert-debounce and nuvoton,jack-eject-debounce properites
>   - add a enum item for nuvoton,short-key-debounce properites
>   - add default value for most properites
>   - add maxItems to clocks properites and mclk entries to clock-names properites
>   - refine wrong indentation from clocks and clock-names
>   - refine dts example for interrupts and clocks
>   - remove headset label from dts example

Thanks.

Still few nits.


...

> +
> +title: NAU8825 audio CODEC
> +
> +maintainers:
> +  - John Hsu <KCHSU0@nuvoton.com>
> +
> +allOf:
> +  - $ref: dai-common.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - nuvoton,nau8825
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +    description:
> +      The CODEC's interrupt output.

Drop description.

> +
> +  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:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      JKDET pin polarity.
> +    enum:
> +      - 0 # active high
> +      - 1 # active low
> +    default: 1
> +
> +  nuvoton,vref-impedance:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      VREF Impedance selection.
> +    enum:
> +      - 0 # Open
> +      - 1 # 25 kOhm
> +      - 2 # 125 kOhm
> +      - 3 # 2.5 kOhm
> +    default: 2
> +
> +  nuvoton,micbias-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Micbias voltage level.
> +    enum:
> +      - 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
> +    default: 6
> +
> +  nuvoton,sar-threshold-num:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Number of buttons supported.
> +    minimum: 1
> +    maximum: 4
> +    default: 4
> +
> +  nuvoton,sar-threshold:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description:
> +      Impedance threshold for each button. Array that contains up to 8 buttons
> +      configuration. SAR value is calculated as
> +      SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R) where MICBIAS is
> +      configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by
> +      'nuvoton,sar-voltage', R - button impedance.
> +      Refer datasheet section 10.2 for more information about threshold
> +      calculation.
> +    minItems: 1
> +    maxItems: 4
> +    items:
> +      minimum: 0
> +      maximum: 255
> +
> +  nuvoton,sar-hysteresis:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Button impedance measurement hysteresis.
> +    default: 0
> +
> +  nuvoton,sar-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Reference voltage for button impedance measurement.
> +    enum:
> +      - 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
> +    default: 6
> +
> +  nuvoton,sar-compare-time:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      SAR compare time.
> +    enum:
> +      - 0 # 500 ns
> +      - 1 # 1 us
> +      - 2 # 2 us
> +      - 3 # 4 us
> +    default: 1
> +
> +  nuvoton,sar-sampling-time:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      SAR sampling time.
> +    enum:
> +      - 0 # 2 us
> +      - 1 # 4 us
> +      - 2 # 8 us
> +      - 3 # 16 us
> +    default: 1
> +
> +  nuvoton,short-key-debounce:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Button short key press debounce time.
> +    enum:
> +      - 0 # 30 ms
> +      - 1 # 50 ms
> +      - 2 # 100 ms
> +      - 3 # 30 ms
> +    default: 3
> +
> +  nuvoton,jack-insert-debounce:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      number from 0 to 7 that sets debounce time to 2^(n+2) ms.
> +    maximum: 7
> +    default: 7
> +
> +  nuvoton,jack-eject-debounce:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      number from 0 to 7 that sets debounce time to 2^(n+2) ms
> +    maximum: 7
> +    default: 0
> +
> +  nuvoton,crosstalk-enable:
> +    description:
> +      make crosstalk function enable if set.
> +    type: boolean
> +
> +  nuvoton,adcout-drive-strong:
> +    description:
> +      make the drive strength of ADCOUT IO PIN strong if set.
> +      Otherwise, the drive keeps normal strength.
> +    type: boolean
> +
> +  nuvoton,adc-delay-ms:
> +    description:
> +      Delay (in ms) to make input path stable and avoid pop noise.
> +      The default value is 125 and range between 125 to 500 ms.
> +    minimum: 125
> +    maximum: 500
> +    default: 125
> +
> +  clocks:
> +    description:
> +      list of phandle and clock specifier pairs according to common clock
> +      bindings for the clocks described in clock-names.

Drop desription.

> +    maxItems: 1
> +
> +  clock-names:
> +    description:
> +      should include "mclk" for the MCLK master clock.

Drop description.

> +    items:
> +      - const: mclk

You probably want also sound-dai-cells.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false

Best regards,
Krzysztof
David Lin May 11, 2023, 10:57 a.m. UTC | #2
On 5/11/2023 6:10 PM, Krzysztof Kozlowski wrote:
> On 10/05/2023 11:19, David Lin wrote:
>> Convert the NAU8825 audio CODEC bindings to DT schema.
>>
>> Signed-off-by: David Lin <CTLIN0@nuvoton.com>
>>
>> Changes:
>> V2 -> V3:
>>    - refine node name from "nau8825" to "codec" for generic purpose
>>
>> V1 -> V2:
>>    - add interrupts properties
>>    - add maximum to nuvoton,jack-insert-debounce and nuvoton,jack-eject-debounce properites
>>    - add a enum item for nuvoton,short-key-debounce properites
>>    - add default value for most properites
>>    - add maxItems to clocks properites and mclk entries to clock-names properites
>>    - refine wrong indentation from clocks and clock-names
>>    - refine dts example for interrupts and clocks
>>    - remove headset label from dts example
> Thanks.
>
> Still few nits.
>
>
> ...
>
>> +
>> +title: NAU8825 audio CODEC
>> +
>> +maintainers:
>> +  - John Hsu <KCHSU0@nuvoton.com>
>> +
>> +allOf:
>> +  - $ref: dai-common.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - nuvoton,nau8825
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +    description:
>> +      The CODEC's interrupt output.
> Drop description.
OK.
>> +
>> +  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:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      JKDET pin polarity.
>> +    enum:
>> +      - 0 # active high
>> +      - 1 # active low
>> +    default: 1
>> +
>> +  nuvoton,vref-impedance:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      VREF Impedance selection.
>> +    enum:
>> +      - 0 # Open
>> +      - 1 # 25 kOhm
>> +      - 2 # 125 kOhm
>> +      - 3 # 2.5 kOhm
>> +    default: 2
>> +
>> +  nuvoton,micbias-voltage:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      Micbias voltage level.
>> +    enum:
>> +      - 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
>> +    default: 6
>> +
>> +  nuvoton,sar-threshold-num:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      Number of buttons supported.
>> +    minimum: 1
>> +    maximum: 4
>> +    default: 4
>> +
>> +  nuvoton,sar-threshold:
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    description:
>> +      Impedance threshold for each button. Array that contains up to 8 buttons
>> +      configuration. SAR value is calculated as
>> +      SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R) where MICBIAS is
>> +      configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by
>> +      'nuvoton,sar-voltage', R - button impedance.
>> +      Refer datasheet section 10.2 for more information about threshold
>> +      calculation.
>> +    minItems: 1
>> +    maxItems: 4
>> +    items:
>> +      minimum: 0
>> +      maximum: 255
>> +
>> +  nuvoton,sar-hysteresis:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      Button impedance measurement hysteresis.
>> +    default: 0
>> +
>> +  nuvoton,sar-voltage:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      Reference voltage for button impedance measurement.
>> +    enum:
>> +      - 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
>> +    default: 6
>> +
>> +  nuvoton,sar-compare-time:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      SAR compare time.
>> +    enum:
>> +      - 0 # 500 ns
>> +      - 1 # 1 us
>> +      - 2 # 2 us
>> +      - 3 # 4 us
>> +    default: 1
>> +
>> +  nuvoton,sar-sampling-time:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      SAR sampling time.
>> +    enum:
>> +      - 0 # 2 us
>> +      - 1 # 4 us
>> +      - 2 # 8 us
>> +      - 3 # 16 us
>> +    default: 1
>> +
>> +  nuvoton,short-key-debounce:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      Button short key press debounce time.
>> +    enum:
>> +      - 0 # 30 ms
>> +      - 1 # 50 ms
>> +      - 2 # 100 ms
>> +      - 3 # 30 ms
>> +    default: 3
>> +
>> +  nuvoton,jack-insert-debounce:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      number from 0 to 7 that sets debounce time to 2^(n+2) ms.
>> +    maximum: 7
>> +    default: 7
>> +
>> +  nuvoton,jack-eject-debounce:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description:
>> +      number from 0 to 7 that sets debounce time to 2^(n+2) ms
>> +    maximum: 7
>> +    default: 0
>> +
>> +  nuvoton,crosstalk-enable:
>> +    description:
>> +      make crosstalk function enable if set.
>> +    type: boolean
>> +
>> +  nuvoton,adcout-drive-strong:
>> +    description:
>> +      make the drive strength of ADCOUT IO PIN strong if set.
>> +      Otherwise, the drive keeps normal strength.
>> +    type: boolean
>> +
>> +  nuvoton,adc-delay-ms:
>> +    description:
>> +      Delay (in ms) to make input path stable and avoid pop noise.
>> +      The default value is 125 and range between 125 to 500 ms.
>> +    minimum: 125
>> +    maximum: 500
>> +    default: 125
>> +
>> +  clocks:
>> +    description:
>> +      list of phandle and clock specifier pairs according to common clock
>> +      bindings for the clocks described in clock-names.
> Drop desription.
OK.
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    description:
>> +      should include "mclk" for the MCLK master clock.
> Drop description.
OK.
>
>> +    items:
>> +      - const: mclk
> You probably want also sound-dai-cells.
I will add '#sound-dai-cells' property and also update dts example.
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +
>> +unevaluatedProperties: false
> Best regards,
> Krzysztof
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/sound/nau8825.txt b/Documentation/devicetree/bindings/sound/nau8825.txt
deleted file mode 100644
index a9c34526f4cb..000000000000
--- a/Documentation/devicetree/bindings/sound/nau8825.txt
+++ /dev/null
@@ -1,111 +0,0 @@ 
-Nuvoton NAU8825 audio codec
-
-This device supports I2C only.
-
-Required properties:
-  - compatible : Must be "nuvoton,nau8825"
-
-  - reg : the I2C address of the device. This is either 0x1a (CSB=0) or 0x1b (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,sar-threshold-num: Number of buttons supported
-  - nuvoton,sar-threshold: Impedance threshold for each button. Array that contains up to 8 buttons configuration. SAR value is calculated as
-    SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R)
-    where MICBIAS is configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by 'nuvoton,sar-voltage', R - button impedance.
-    Refer datasheet section 10.2 for more information about threshold calculation.
-
-  - nuvoton,sar-hysteresis: Button impedance measurement hysteresis.
-
-  - nuvoton,sar-voltage: Reference voltage for button impedance measurement.
-      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,sar-compare-time: SAR compare time
-      0 - 500 ns
-      1 - 1 us
-      2 - 2 us
-      3 - 4 us
-
-  - nuvoton,sar-sampling-time: SAR sampling time
-      0 - 2 us
-      1 - 4 us
-      2 - 8 us
-      3 - 16 us
-
-  - nuvoton,short-key-debounce: Button short key press debounce time.
-      0 - 30 ms
-      1 - 50 ms
-      2 - 100 ms
-      3 - 30 ms
-
-  - 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,crosstalk-enable: make crosstalk function enable if set.
-
-  - nuvoton,adcout-drive-strong: make the drive strength of ADCOUT IO PIN strong if set.
-      Otherwise, the drive keeps normal strength.
-
-  - nuvoton,adc-delay-ms: Delay (in ms) to make input path stable and avoid pop noise. The
-      default value is 125 and range between 125 to 500 ms.
-
-  - clocks: list of phandle and clock specifier pairs according to common clock bindings for the
-      clocks described in clock-names
-  - clock-names: should include "mclk" for the MCLK master clock
-
-Example:
-
-  headset: nau8825@1a {
-      compatible = "nuvoton,nau8825";
-      reg = <0x1a>;
-      interrupt-parent = <&gpio>;
-      interrupts = <TEGRA_GPIO(E, 6) 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>;
-      // Setup 4 buttons impedance according to Android specification
-      nuvoton,sar-threshold-num = <4>;
-      nuvoton,sar-threshold = <0xc 0x1e 0x38 0x60>;
-      nuvoton,sar-hysteresis = <1>;
-      nuvoton,sar-voltage = <0>;
-      nuvoton,sar-compare-time = <0>;
-      nuvoton,sar-sampling-time = <0>;
-      nuvoton,short-key-debounce = <2>;
-      nuvoton,jack-insert-debounce = <7>;
-      nuvoton,jack-eject-debounce = <7>;
-      nuvoton,crosstalk-enable;
-
-      clock-names = "mclk";
-      clocks = <&tegra_pmc TEGRA_PMC_CLK_OUT_2>;
-  };
diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8825.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8825.yaml
new file mode 100644
index 000000000000..a68c553d7464
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8825.yaml
@@ -0,0 +1,242 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nuvoton,nau8825.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NAU8825 audio CODEC
+
+maintainers:
+  - John Hsu <KCHSU0@nuvoton.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - nuvoton,nau8825
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description:
+      The CODEC's interrupt output.
+
+  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:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      JKDET pin polarity.
+    enum:
+      - 0 # active high
+      - 1 # active low
+    default: 1
+
+  nuvoton,vref-impedance:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      VREF Impedance selection.
+    enum:
+      - 0 # Open
+      - 1 # 25 kOhm
+      - 2 # 125 kOhm
+      - 3 # 2.5 kOhm
+    default: 2
+
+  nuvoton,micbias-voltage:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Micbias voltage level.
+    enum:
+      - 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
+    default: 6
+
+  nuvoton,sar-threshold-num:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Number of buttons supported.
+    minimum: 1
+    maximum: 4
+    default: 4
+
+  nuvoton,sar-threshold:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      Impedance threshold for each button. Array that contains up to 8 buttons
+      configuration. SAR value is calculated as
+      SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R) where MICBIAS is
+      configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by
+      'nuvoton,sar-voltage', R - button impedance.
+      Refer datasheet section 10.2 for more information about threshold
+      calculation.
+    minItems: 1
+    maxItems: 4
+    items:
+      minimum: 0
+      maximum: 255
+
+  nuvoton,sar-hysteresis:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Button impedance measurement hysteresis.
+    default: 0
+
+  nuvoton,sar-voltage:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Reference voltage for button impedance measurement.
+    enum:
+      - 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
+    default: 6
+
+  nuvoton,sar-compare-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      SAR compare time.
+    enum:
+      - 0 # 500 ns
+      - 1 # 1 us
+      - 2 # 2 us
+      - 3 # 4 us
+    default: 1
+
+  nuvoton,sar-sampling-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      SAR sampling time.
+    enum:
+      - 0 # 2 us
+      - 1 # 4 us
+      - 2 # 8 us
+      - 3 # 16 us
+    default: 1
+
+  nuvoton,short-key-debounce:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Button short key press debounce time.
+    enum:
+      - 0 # 30 ms
+      - 1 # 50 ms
+      - 2 # 100 ms
+      - 3 # 30 ms
+    default: 3
+
+  nuvoton,jack-insert-debounce:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      number from 0 to 7 that sets debounce time to 2^(n+2) ms.
+    maximum: 7
+    default: 7
+
+  nuvoton,jack-eject-debounce:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      number from 0 to 7 that sets debounce time to 2^(n+2) ms
+    maximum: 7
+    default: 0
+
+  nuvoton,crosstalk-enable:
+    description:
+      make crosstalk function enable if set.
+    type: boolean
+
+  nuvoton,adcout-drive-strong:
+    description:
+      make the drive strength of ADCOUT IO PIN strong if set.
+      Otherwise, the drive keeps normal strength.
+    type: boolean
+
+  nuvoton,adc-delay-ms:
+    description:
+      Delay (in ms) to make input path stable and avoid pop noise.
+      The default value is 125 and range between 125 to 500 ms.
+    minimum: 125
+    maximum: 500
+    default: 125
+
+  clocks:
+    description:
+      list of phandle and clock specifier pairs according to common clock
+      bindings for the clocks described in clock-names.
+    maxItems: 1
+
+  clock-names:
+    description:
+      should include "mclk" for the MCLK master clock.
+    items:
+      - const: mclk
+
+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@1a {
+            compatible = "nuvoton,nau8825";
+            reg = <0x1a>;
+            interrupt-parent = <&gpio>;
+            interrupts = <38 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>;
+            // Setup 4 buttons impedance according to Android specification
+            nuvoton,sar-threshold-num = <4>;
+            nuvoton,sar-threshold = <0xc 0x1e 0x38 0x60>;
+            nuvoton,sar-hysteresis = <1>;
+            nuvoton,sar-voltage = <0>;
+            nuvoton,sar-compare-time = <0>;
+            nuvoton,sar-sampling-time = <0>;
+            nuvoton,short-key-debounce = <2>;
+            nuvoton,jack-insert-debounce = <7>;
+            nuvoton,jack-eject-debounce = <7>;
+            nuvoton,crosstalk-enable;
+
+            clock-names = "mclk";
+            clocks = <&tegra_pmc 1>;
+        };
+    };