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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2020 Analog Devices Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD5770R DAC device driver
maintainers:
- Alexandru Tachici <alexandru.tachici@analog.com>
description: |
Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be
found here:
https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf
properties:
compatible:
enum:
- adi,ad5770r
reg:
maxItems: 1
avdd-supply:
description:
AVdd voltage supply. Represents two different supplies in the datasheet
that are in fact the same.
iovdd-supply:
description:
Voltage supply for the chip interface.
vref-supply:
description: Specify the voltage of the external reference used.
Available reference options are 1.25 V or 2.5 V. If no
external reference declared then the device will use the
internal reference of 1.25 V.
adi,external-resistor:
description: Specify if an external 2.5k ohm resistor is used. If not
specified the device will use an internal 2.5k ohm resistor.
The precision resistor is used for reference current generation.
type: boolean
reset-gpios:
description: GPIO spec for the RESET pin. If specified, it will be
asserted during driver probe.
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
channel@0:
description: Represents an external channel which are
connected to the DAC. Channel 0 can act both as a current
source and sink.
type: object
additionalProperties: false
properties:
reg:
description: This represents the channel number.
const: 0
adi,range-microamp:
description: Output range of the channel.
oneOf:
- items:
- const: 0
- const: 300000
- items:
- const: -60000
- const: 0
- items:
- const: -60000
- const: 300000
channel@1:
description: Represents an external channel which are
connected to the DAC.
type: object
additionalProperties: false
properties:
reg:
description: This represents the channel number.
const: 1
adi,range-microamp:
description: Output range of the channel.
items:
- const: 0
- enum: [140000, 250000]
channel@2:
description: Represents an external channel which are
connected to the DAC.
type: object
additionalProperties: false
properties:
reg:
description: This represents the channel number.
const: 2
adi,range-microamp:
description: Output range of the channel.
items:
- const: 0
- enum: [55000, 150000]
patternProperties:
"^channel@([3-5])$":
type: object
additionalProperties: false
description: Represents the external channels which are connected to the DAC.
properties:
reg:
description: This represents the channel number.
minimum: 3
maximum: 5
adi,range-microamp:
description: Output range of the channel.
items:
- const: 0
- enum: [45000, 100000]
required:
- reg
- channel@0
- channel@1
- channel@2
- channel@3
- channel@4
- channel@5
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
ad5770r@0 {
compatible = "adi,ad5770r";
reg = <0>;
spi-max-frequency = <1000000>;
vref-supply = <&vref>;
adi,external-resistor;
reset-gpios = <&gpio 22 0>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 {
reg = <0>;
adi,range-microamp = <0 300000>;
};
channel@1 {
reg = <1>;
adi,range-microamp = <0 140000>;
};
channel@2 {
reg = <2>;
adi,range-microamp = <0 55000>;
};
channel@3 {
reg = <3>;
adi,range-microamp = <0 45000>;
};
channel@4 {
reg = <4>;
adi,range-microamp = <0 45000>;
};
channel@5 {
reg = <5>;
adi,range-microamp = <0 45000>;
};
};
};
...
|
