Re: [PATCH v4 1/2] ASoC: dt-bindings: Added schema for "nuvoton,nau8325"

On Fri, Mar 22, 2024 at 10:54:04AM +0800, Seven Lee wrote:

Add a DT schema for describing nau8325 audio amplifiers. The key features are as follows:

• Low SPK_VDD Quiescent Current
• Gain Setting with 2-wire interface
• Powerful Stereo Class-D Amplifier
• Low Output Noise
• Low Current Shutdown Mode
• Click-and Pop Suppression

More resources : https://www.nuvoton.com/products/smart-home-audio/audio-amplifiers/class-d-s...

Signed-off-by: Seven Lee wtli@nuvoton.com

.../bindings/sound/nuvoton,nau8325.yaml | 90 +++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml

diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml new file mode 100644 index 000000000000..6ded94c0e644 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/nuvoton,nau8325.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#

+title: NAU8325 audio Amplifier

+maintainers:

• • Seven Lee WTLI@nuvoton.com

+allOf:

• • $ref: dai-common.yaml#

+properties:

• compatible:
• const: nuvoton,nau8325
• reg:
• maxItems: 1
• nuvoton,vref-impedance:
• $ref: /schemas/types.yaml#/definitions/uint32
• description:

•  The vref impedance to be used in kohms. Middle of voltage enables
  

•  Tie-Off selection options. Due to the high impedance of the VREF
  

•  pin, it is important to use a low-leakage capacitor. Possible
  

•  values are 0, 1, 2, and 3 as per the below,
  

•  0 = Disable tie off resistance
  

•  1 = 25 kohms
  

•  2 = 125 kohms
  

•  3 = 2.5 kohms
  

• enum: [ 0, 1, 2, 3 ]

Once again, use standard unit suffix on the property name:

nuvoton,vref-impedance-ohms: enum: [0, 2500, 25000, 125000]

Rob