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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright 2024 Analog Devices Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/adi,ad4851.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD485X family
maintainers:
- Sergiu Cuciurean <sergiu.cuciurean@analog.com>
- Dragos Bogdan <dragos.bogdan@analog.com>
- Antoniu Miclaus <antoniu.miclaus@analog.com>
description: |
Analog Devices AD485X fully buffered, 8-channel simultaneous sampling,
16/20-bit, 1 MSPS data acquisition system (DAS) with differential, wide
common-mode range inputs.
https://www.analog.com/media/en/technical-documentation/data-sheets/ad4855.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/ad4856.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/ad4857.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/ad4858.pdf
$ref: /schemas/spi/spi-peripheral-props.yaml#
properties:
compatible:
enum:
- adi,ad4851
- adi,ad4852
- adi,ad4853
- adi,ad4854
- adi,ad4855
- adi,ad4856
- adi,ad4857
- adi,ad4858
- adi,ad4858i
reg:
maxItems: 1
vcc-supply: true
vee-supply: true
vdd-supply: true
vddh-supply: true
vddl-supply: true
vio-supply: true
vrefbuf-supply: true
vrefio-supply: true
pwms:
description: PWM connected to the CNV pin.
maxItems: 1
io-backends:
maxItems: 1
pd-gpios:
maxItems: 1
spi-max-frequency:
maximum: 25000000
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
"^channel(@[0-7])?$":
$ref: adc.yaml
type: object
description: Represents the channels which are connected to the ADC.
properties:
reg:
description:
The channel number, as specified in the datasheet (from 0 to 7).
minimum: 0
maximum: 7
diff-channels:
description:
Each channel can be configured as a bipolar differential channel.
The ADC uses the same positive and negative inputs for this.
This property must be specified as 'reg' (or the channel number) for
both positive and negative inputs (i.e. diff-channels = <reg reg>).
Since the configuration is bipolar differential, the 'bipolar'
property is required.
items:
minimum: 0
maximum: 7
bipolar: true
required:
- reg
additionalProperties: false
required:
- compatible
- reg
- vcc-supply
- vee-supply
- vdd-supply
- vio-supply
- pwms
unevaluatedProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
adc@0{
#address-cells = <1>;
#size-cells = <0>;
compatible = "adi,ad4858";
reg = <0>;
spi-max-frequency = <10000000>;
vcc-supply = <&vcc>;
vdd-supply = <&vdd>;
vee-supply = <&vee>;
vddh-supply = <&vddh>;
vddl-supply = <&vddl>;
vio-supply = <&vio>;
pwms = <&pwm_gen 0 0>;
io-backends = <&iio_backend>;
channel@0 {
reg = <0>;
diff-channels = <0 0>;
bipolar;
};
channel@1 {
reg = <1>;
};
};
};
...
|
