# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/iio/dac/adi,ad5755.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD5755 Multi-Channel DAC
maintainers:
- Sean Nyekjaer <sean.nyekjaer@prevas.dk>
properties:
compatible:
enum:
- adi,ad5755
- adi,ad5755-1
- adi,ad5757
- adi,ad5735
- adi,ad5737
reg:
maxItems: 1
spi-cpha:
description: Either this or spi-cpol but not both.
spi-cpol: true
adi,ext-dc-dc-compenstation-resistor:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set if the hardware have an external resistor and thereby bypasses
the internal compensation resistor.
adi,dc-dc-phase:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2, 3]
description: |
Valid values for DC DC Phase control is:
0: All dc-to-dc converters clock on the same edge.
1: Channel A and Channel B clock on the same edge,
Channel C and Channel D clock on opposite edges.
2: Channel A and Channel C clock on the same edge,
Channel B and Channel D clock on opposite edges.
3: Channel A, Channel B, Channel C, and Channel D
clock 90 degrees out of phase from each other.
adi,dc-dc-freq-hz:
enum: [250000, 410000, 650000]
adi,dc-dc-max-microvolt:
description:
Maximum allowed Vboost voltage supplied by the dc-to-dc converter.
enum: [23000000, 24500000, 27000000, 29500000]
"#address-cells":
const: 1
"#size-cells":
const: 0
"#io-channel-cells":
const: 1
required:
- compatible
- reg
patternProperties:
"^channel@[0-7]$":
type: object
description: Child node to describe a channel
properties:
reg:
maxItems: 1
adi,mode:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 6
description: |
Valid values for DAC modes is:
0: 0 V to 5 V voltage range.
1: 0 V to 10 V voltage range.
2: Plus minus 5 V voltage range.
3: Plus minus 10 V voltage range.
4: 4 mA to 20 mA current range.
5: 0 mA to 20 mA current range.
6: 0 mA to 24 mA current range.
adi,ext-current-sense-resistor:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set if the hardware has an external current sense resistor
adi,enable-voltage-overrange:
$ref: /schemas/types.yaml#/definitions/flag
description: Enable voltage overrange
adi,slew:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: |
Array of slewrate settings should contain 3 fields:
1: Should be either 0 or 1 in order to enable or disable slewrate.
2: Slew rate update frequency
3: Slew step size
items:
- enum: [0, 1]
- enum: [64000, 32000, 16000, 8000, 4000, 2000, 1000, 500, 250, 125, 64, 32, 16, 8, 4, 0]
- enum: [1, 2, 4, 16, 32, 64, 128, 256]
required:
- reg
additionalProperties: false
oneOf:
- required:
- spi-cpha
- required:
- spi-cpol
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
dac@0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "adi,ad5755";
reg = <0>;
spi-max-frequency = <1000000>;
spi-cpha;
adi,dc-dc-phase = <0>;
adi,dc-dc-freq-hz = <410000>;
adi,dc-dc-max-microvolt = <23000000>;
channel@0 {
reg = <0>;
adi,mode = <4>;
adi,ext-current-sense-resistor;
adi,slew = <0 64000 1>;
};
channel@1 {
reg = <1>;
adi,mode = <4>;
adi,ext-current-sense-resistor;
adi,slew = <0 64000 1>;
};
channel@2 {
reg = <2>;
adi,mode = <4>;
adi,ext-current-sense-resistor;
adi,slew = <0 64000 1>;
};
channel@3 {
reg = <3>;
adi,mode = <4>;
adi,ext-current-sense-resistor;
adi,slew = <0 64000 1>;
};
};
};
...
