1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/adi,max98396.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Analog Devices MAX98396 Speaker Amplifier Device Tree Bindings
8
9 maintainers:
10 - Ryan Lee <ryans.lee@analog.com>
11
12 description:
13 The MAX98396 is a mono Class-DG speaker amplifier with I/V sense.
14 The device provides a PCM interface for audio data and a standard
15 I2C interface for control data communication.
16 The MAX98397 is a variant of MAX98396 with wide input supply range.
17
18 properties:
19 compatible:
20 enum:
21 - adi,max98396
22 - adi,max98397
23 reg:
24 maxItems: 1
25 description: I2C address of the device.
26
27 avdd-supply:
28 description: A 1.8V supply that powers up the AVDD pin.
29
30 dvdd-supply:
31 description: A 1.2V supply that powers up the DVDD pin.
32
33 dvddio-supply:
34 description: A 1.2V or 1.8V supply that powers up the VDDIO pin.
35
36 pvdd-supply:
37 description: A 3.0V to 20V supply that powers up the PVDD pin.
38
39 vbat-supply:
40 description: A 3.3V to 5.5V supply that powers up the VBAT pin.
41
42 adi,vmon-slot-no:
43 description: slot number of the voltage sense monitor
44 $ref: "/schemas/types.yaml#/definitions/uint32"
45 minimum: 0
46 maximum: 15
47 default: 0
48
49 adi,imon-slot-no:
50 description: slot number of the current sense monitor
51 $ref: "/schemas/types.yaml#/definitions/uint32"
52 minimum: 0
53 maximum: 15
54 default: 1
55
56 adi,spkfb-slot-no:
57 description: slot number of speaker DSP monitor
58 $ref: "/schemas/types.yaml#/definitions/uint32"
59 minimum: 0
60 maximum: 15
61 default: 2
62
63 adi,bypass-slot-no:
64 description:
65 Selects the PCM data input channel that is routed to the speaker
66 audio processing bypass path.
67 $ref: "/schemas/types.yaml#/definitions/uint32"
68 minimum: 0
69 maximum: 15
70 default: 0
71
72 adi,interleave-mode:
73 description:
74 For cases where a single combined channel for the I/V sense data
75 is not sufficient, the device can also be configured to share
76 a single data output channel on alternating frames.
77 In this configuration, the current and voltage data will be frame
78 interleaved on a single output channel.
79 type: boolean
80
81 reset-gpios:
82 maxItems: 1
83
84 required:
85 - compatible
86 - reg
87
88 additionalProperties: false
89
90 examples:
91 - |
92 #include <dt-bindings/gpio/gpio.h>
93 i2c {
94 #address-cells = <1>;
95 #size-cells = <0>;
96 max98396: amplifier@39 {
97 compatible = "adi,max98396";
98 reg = <0x39>;
99 dvdd-supply = <®ulator_1v2>;
100 dvddio-supply = <®ulator_1v8>;
101 avdd-supply = <®ulator_1v8>;
102 pvdd-supply = <®ulator_pvdd>;
103 adi,vmon-slot-no = <0>;
104 adi,imon-slot-no = <1>;
105 reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
106 };
107 };
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