Bindings/sound/maxim,max98504.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/sound/maxim,max98504.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Maxim Integrated MAX98504 class D mono speaker amplifier
   8
   9 maintainers:
  10   - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
  11
  12 description:
  13   Maxim Integrated MAX98504 speaker amplifier supports I2C control interface
  14   with an IRQ output signal, PCM and PDM digital audio interface (DAI) and a
  15   differential analog input.
  16
  17 properties:
  18   compatible:
  19     const: maxim,max98504
  20
  21   reg:
  22     maxItems: 1
  23
  24   interrupts:
  25     maxItems: 1
  26
  27   DIOVDD-supply: true
  28   DVDD-supply: true
  29   PVDD-supply: true
  30
  31   maxim,brownout-threshold:
  32     $ref: /schemas/types.yaml#/definitions/uint32
  33     maximum: 21
  34     default: 0
  35     description:
  36       PVDD brownout threshold, where values correspond to 2.6V, 2.65V...3.65V
  37       voltage range.  Property also enables the PVDD brownout protection.
  38
  39   maxim,brownout-attenuation:
  40     $ref: /schemas/types.yaml#/definitions/uint32
  41     maximum: 6
  42     default: 0
  43     description:
  44       Brownout attenuation to the speaker gain applied during the "attack hold"
  45       and "timed hold" phase, the value must be from 0...6 (dB) range.
  46
  47   maxim,brownout-attack-hold-ms:
  48     maximum: 255
  49     default: 0
  50     description:
  51       Brownout attack hold phase time in ms, VBATBROWN_ATTK_HOLD, register 0x0018.
  52
  53   maxim,brownout-timed-hold-ms:
  54     maximum: 255
  55     default: 0
  56     description:
  57       Brownout timed hold phase time in ms, VBATBROWN_TIME_HOLD, register 0x0019.
  58
  59   maxim,brownout-release-rate-ms:
  60     maximum: 255
  61     default: 0
  62     description:
  63       Brownout release phase step time in ms, VBATBROWN_RELEASE, register 0x001A.
  64
  65 required:
  66   - compatible
  67   - reg
  68
  69 additionalProperties: false
  70
  71 examples:
  72   - |
  73     #include <dt-bindings/gpio/gpio.h>
  74
  75     i2c {
  76         #address-cells = <1>;
  77         #size-cells = <0>;
  78
  79         amplifier@31 {
  80             compatible = "maxim,max98504";
  81             reg = <0x31>;
  82
  83             DIOVDD-supply = <&ldo3_reg>;
  84             DVDD-supply = <&ldo3_reg>;
  85         };
  86     };