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