Rob Herring 於 3/4/2024 9:37 PM 寫道:
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On Mon, Mar 04, 2024 at 06:15:22PM +0800, Seven Lee wrote:
Added a DT schema for describing nau8325 audio amplifiers.
Present tense: Add a ...
Please say more about this device. Features, link to datasheet, etc.
Are the following revisions correct?
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-series/nau8325yg/
Signed-off-by: Seven Lee <wtli@xxxxxxxxxxx>
---
.../bindings/sound/nuvoton,nau8325.yaml | 74 +++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100755 Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml
Schemas aren't executable. checkpatch.pl will tell you this.
yes, I will.
diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml
new file mode 100755
index 000000000000..297d29462812
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8325.yaml
@@ -0,0 +1,74 @@
+# 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@xxxxxxxxxxx>
+
+allOf:
+ - $ref: dai-common.yaml#
+
+properties:
+ compatible:
+ const: nuvoton,nau8325
+
+ reg:
+ maxItems: 1
+
+ nuvoton,vref-impedance:
+ description:
+ VREF impedance selection.
+ enum: ["Open", "25kOhm", "125kOhm", "2.5kOhm"]
Use standard units (-ohms), not strings. For "open", just omit the
property.
Is the description of the following modification correct?
nuvoton,vref-impedance:
$ref: /schemas/types.yaml#/definitions/uint32
description:
The vref impedance to be used in KOhms. Voltage Reference impedance
selection. VREF impedance selection.
enum:
- 0 # Disable tie off resistance
- 1 # 25KOhms
- 2 # 125KOhms
- 3 # 2.5kOhms
default: 2
+
+
+ nuvoton,dac-vref:
+ description: DAC Reference Voltage Setting.
+ enum: ["External VDDA", "1.5V", "1.6V", "1.7V"]
Use standard units.
Is the description of the following modification correct?
nuvoton,dac-vref:
$ref: /schemas/types.yaml#/definitions/uint32
description:
The dac vref to be used in voltage. DAC reference voltage setting.
enum:
- 0 # VDDA
- 1 # VDDA*1.5
- 2 # VDDA*1.6
- 3 # VDDA*1.7
default: 2
+
+
+ nuvoton,alc-enable:
+ description:
+ Enable digital automatic level control (ALC) function.
+ type: boolean
+
+ nuvoton,clock-detection-disable:
+ description:
+ When clock detection is enabled, it will detect whether MCLK
+ and FS are within the range. MCLK range is from 2.048MHz to 24.576MHz.
+ FS range is from 8kHz to 96kHz. And also needs to detect the ratio
+ MCLK_SRC/LRCK of 256, 400 or 500, and needs to detect the BCLK
+ to make sure data is present. There needs to be at least 8 BCLK
+ cycles per Frame Sync.
+ type: boolean
+
+ nuvoton,clock-det-data:
+ description:
+ Request clock detection to require 2048 non-zero samples before enabling
+ the audio paths. If set then non-zero samples is required, otherwise it
+ doesn't matter.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ codec@21 {
+ compatible = "nuvoton,nau8325";
+ reg = <0x21>;
+ nuvoton,vref-impedance = "125kOhm";
+ nuvoton,dac-vref = "1.6V";
+ nuvoton,alc-enable;
+ nuvoton,clock-det-data;
+ };
+ };
--
2.25.1
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