ASoC: dt-bindings: nau8825: Convert to dtschema

Convert the NAU8825 audio CODEC bindings to DT schema.

Signed-off-by: David Lin <CTLIN0@nuvoton.com
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org
Link: https://lore.kernel.org/r/20230511113607.595184-1-CTLIN0@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org

Documentation/devicetree/bindings/sound/nau8825.txt

-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>;
-  };

Documentation/devicetree/bindings/sound/nuvoton,nau8825.yaml

+# 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
+
+  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:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: mclk
+
+  '#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@1a {
+            #sound-dai-cells = <0>;
+            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>;
+        };
+    };