blob: bdc10d4204ecc5679c31deff10ff9a3b30be08a3 [file] [log] [blame]
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/adi,max98396.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices MAX98396 Speaker Amplifier
maintainers:
- Ryan Lee <ryans.lee@analog.com>
description:
The MAX98396 is a mono Class-DG speaker amplifier with I/V sense.
The device provides a PCM interface for audio data and a standard
I2C interface for control data communication.
The MAX98397 is a variant of MAX98396 with wide input supply range.
properties:
compatible:
enum:
- adi,max98396
- adi,max98397
reg:
maxItems: 1
description: I2C address of the device.
avdd-supply:
description: A 1.8V supply that powers up the AVDD pin.
dvdd-supply:
description: A 1.2V supply that powers up the DVDD pin.
dvddio-supply:
description: A 1.2V or 1.8V supply that powers up the VDDIO pin.
pvdd-supply:
description: A 3.0V to 20V supply that powers up the PVDD pin.
vbat-supply:
description: A 3.3V to 5.5V supply that powers up the VBAT pin.
adi,vmon-slot-no:
description: slot number of the voltage sense monitor
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
default: 0
adi,imon-slot-no:
description: slot number of the current sense monitor
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
default: 1
adi,spkfb-slot-no:
description: slot number of speaker DSP monitor
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
default: 2
adi,bypass-slot-no:
description:
Selects the PCM data input channel that is routed to the speaker
audio processing bypass path.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
default: 0
adi,interleave-mode:
description:
For cases where a single combined channel for the I/V sense data
is not sufficient, the device can also be configured to share
a single data output channel on alternating frames.
In this configuration, the current and voltage data will be frame
interleaved on a single output channel.
type: boolean
adi,dmon-stuck-enable:
description:
Enables the "data monitor stuck" feature. Once the data monitor is
enabled, it actively monitors the selected input data (from DIN) to the
speaker amplifier. Once a data error is detected, the data monitor
automatically places the device into software shutdown.
type: boolean
adi,dmon-stuck-threshold-bits:
description:
Sets the threshold for the "data monitor stuck" feature, in bits.
enum: [9, 11, 13, 15]
default: 15
adi,dmon-magnitude-enable:
description:
Enables the "data monitor magnitude" feature. Once the data monitor is
enabled, it actively monitors the selected input data (from DIN) to the
speaker amplifier. Once a data error is detected, the data monitor
automatically places the device into software shutdown.
type: boolean
adi,dmon-magnitude-threshold-bits:
description:
Sets the threshold for the "data monitor magnitude" feature, in bits.
enum: [2, 3, 4, 5]
default: 5
adi,dmon-duration-ms:
description:
Sets the duration for the "data monitor" feature, in milliseconds.
enum: [64, 256, 1024, 4096]
default: 64
reset-gpios:
maxItems: 1
required:
- compatible
- reg
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
max98396: amplifier@39 {
compatible = "adi,max98396";
reg = <0x39>;
dvdd-supply = <&regulator_1v2>;
dvddio-supply = <&regulator_1v8>;
avdd-supply = <&regulator_1v8>;
pvdd-supply = <&regulator_pvdd>;
adi,vmon-slot-no = <0>;
adi,imon-slot-no = <1>;
reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
};
};