dts/bindings/usb/usb-audio-feature-volume.yaml

# Copyright (c) 2023, LISTENAI
# SPDX-License-Identifier: Apache-2.0
#
# Specific fields for USB volume control.

description: USB volume control specific fields.

compatible: "usb-audio-feature-volume"

include: base.yaml

properties:
  volume-max:
    type: int
    default: 0x0A00
    description: |
      attention: this attribute is a signed value.
      This attribute represents the maximum volume level.
      The range from +127.9961 dB (0x7FFF) down to -127.9961 dB (0x8001).
      Valid range: 0 - 0xFFFF
  volume-min:
    type: int
    default: 0xBA00
    description: |
      attention: this attribute is a signed value.
      This attribute represents the minimum volume level.
      The range from +127.9961 dB (0x7FFF) down to -127.9961 dB (0x8001).
      Valid range: 0 - 0xFFFF
  volume-res:
    type: int
    default: 0x100
    description: |
      attention: this attribute can only take positive values.
      This attribute represents the volume resolution(step).
      1 = 1/256 dB or 0.00390625 dB.
      0x100(256) = 1dB.
      Valid range: 1 - 0x7FFF