0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/iio/adc/adc.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Generic IIO bindings for ADC channels
0008
0009 maintainers:
0010 - Jonathan Cameron <jic23@kernel.org>
0011
0012 description:
0013 A few properties are defined in a common way ADC channels.
0014
0015 properties:
0016 $nodename:
0017 pattern: "^channel(@[0-9a-f]+)?$"
0018 description:
0019 A channel index should match reg.
0020
0021 reg:
0022 maxItems: 1
0023
0024 label:
0025 $ref: /schemas/types.yaml#/definitions/string
0026 description: Unique name to identify which channel this is.
0027
0028 bipolar:
0029 $ref: /schemas/types.yaml#/definitions/flag
0030 description: If provided, the channel is to be used in bipolar mode.
0031
0032 diff-channels:
0033 $ref: /schemas/types.yaml#/definitions/uint32-array
0034 maxItems: 2
0035 minItems: 2
0036 description:
0037 Many ADCs have dual Muxes to allow different input pins to be routed
0038 to both the positive and negative inputs of a differential ADC.
0039 The first value specifies the positive input pin, the second
0040 specifies the negative input pin.
0041
0042 settling-time-us:
0043 description:
0044 Time between enabling the channel and first stable readings.
0045
0046 oversampling-ratio:
0047 $ref: /schemas/types.yaml#/definitions/uint32
0048 description:
0049 Oversampling is used as replacement of or addition to the low-pass filter.
0050 In some cases, the desired filtering characteristics are a function the
0051 device design and can interact with other characteristics such as
0052 settling time.
0053
0054 additionalProperties: true
