142 lines
4.0 KiB
YAML
142 lines
4.0 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/adi,max98396.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices MAX98396 Speaker Amplifier
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maintainers:
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- Ryan Lee <ryans.lee@analog.com>
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description:
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The MAX98396 is a mono Class-DG speaker amplifier with I/V sense.
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The device provides a PCM interface for audio data and a standard
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I2C interface for control data communication.
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The MAX98397 is a variant of MAX98396 with wide input supply range.
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properties:
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compatible:
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enum:
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- adi,max98396
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- adi,max98397
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reg:
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maxItems: 1
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description: I2C address of the device.
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avdd-supply:
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description: A 1.8V supply that powers up the AVDD pin.
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dvdd-supply:
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description: A 1.2V supply that powers up the DVDD pin.
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dvddio-supply:
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description: A 1.2V or 1.8V supply that powers up the VDDIO pin.
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pvdd-supply:
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description: A 3.0V to 20V supply that powers up the PVDD pin.
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vbat-supply:
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description: A 3.3V to 5.5V supply that powers up the VBAT pin.
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adi,vmon-slot-no:
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description: slot number of the voltage sense monitor
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 0
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adi,imon-slot-no:
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description: slot number of the current sense monitor
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 1
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adi,spkfb-slot-no:
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description: slot number of speaker DSP monitor
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 2
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adi,bypass-slot-no:
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description:
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Selects the PCM data input channel that is routed to the speaker
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audio processing bypass path.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 0
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adi,interleave-mode:
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description:
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For cases where a single combined channel for the I/V sense data
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is not sufficient, the device can also be configured to share
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a single data output channel on alternating frames.
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In this configuration, the current and voltage data will be frame
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interleaved on a single output channel.
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type: boolean
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adi,dmon-stuck-enable:
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description:
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Enables the "data monitor stuck" feature. Once the data monitor is
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enabled, it actively monitors the selected input data (from DIN) to the
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speaker amplifier. Once a data error is detected, the data monitor
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automatically places the device into software shutdown.
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type: boolean
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adi,dmon-stuck-threshold-bits:
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description:
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Sets the threshold for the "data monitor stuck" feature, in bits.
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enum: [9, 11, 13, 15]
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default: 15
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adi,dmon-magnitude-enable:
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description:
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Enables the "data monitor magnitude" feature. Once the data monitor is
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enabled, it actively monitors the selected input data (from DIN) to the
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speaker amplifier. Once a data error is detected, the data monitor
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automatically places the device into software shutdown.
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type: boolean
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adi,dmon-magnitude-threshold-bits:
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description:
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Sets the threshold for the "data monitor magnitude" feature, in bits.
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enum: [2, 3, 4, 5]
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default: 5
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adi,dmon-duration-ms:
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description:
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Sets the duration for the "data monitor" feature, in milliseconds.
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enum: [64, 256, 1024, 4096]
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default: 64
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reset-gpios:
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maxItems: 1
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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max98396: amplifier@39 {
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compatible = "adi,max98396";
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reg = <0x39>;
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dvdd-supply = <®ulator_1v2>;
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dvddio-supply = <®ulator_1v8>;
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avdd-supply = <®ulator_1v8>;
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pvdd-supply = <®ulator_pvdd>;
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adi,vmon-slot-no = <0>;
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adi,imon-slot-no = <1>;
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reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
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};
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};
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