| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |