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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/dac/adi,ad5758.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD5758 DAC
maintainers:
- Michael Hennerich <Michael.Hennerich@analog.com>
properties:
compatible:
const: adi,ad5758
reg:
maxItems: 1
spi-max-frequency: true
spi-cpha: true
adi,dc-dc-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2, 3]
description: |
Mode of operation of the dc-to-dc converter
Dynamic Power Control (DPC)
In this mode, the AD5758 circuitry senses the output voltage and
dynamically regulates the supply voltage, VDPC+, to meet compliance
requirements plus an optimized headroom voltage for the output buffer.
Programmable Power Control (PPC)
In this mode, the VDPC+ voltage is user-programmable to a fixed level
that needs to accommodate the maximum output load required.
The output of the DAC core is either converted to a current or
voltage output at the VIOUT pin. Only one mode can be enabled at
any one time.
The following values are currently supported:
* 1: DPC current mode
* 2: DPC voltage mode
* 3: PPC current mode
Depending on the selected output mode (voltage or current) one of the
two properties must be present:
adi,range-microvolt:
$ref: /schemas/types.yaml#/definitions/int32-array
description: |
Voltage output range specified as <minimum, maximum>
enum:
- [[0, 5000000]]
- [[0, 10000000]]
- [[-5000000, 5000000]]
- [[-10000000, 10000000]]
adi,range-microamp:
$ref: /schemas/types.yaml#/definitions/int32-array
description: |
Current output range specified as <minimum, maximum>
enum:
- [[0, 20000]]
- [[0, 24000]]
- [[4, 24000]]
- [[-20000, 20000]]
- [[-24000, 24000]]
- [[-1000, 22000]]
reset-gpios: true
adi,dc-dc-ilim-microamp:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [150000, 200000, 250000, 300000, 350000, 400000]
description: |
The dc-to-dc converter current limit.
adi,slew-time-us:
description: |
The time it takes for the output to reach the full scale [uS]
minimum: 133
maximum: 1023984375
required:
- compatible
- reg
- spi-cpha
- adi,dc-dc-mode
allOf:
- if:
properties:
adi,dc-dc-mode:
contains:
enum: [1, 3]
then:
properties:
adi,range-microvolt: false
required:
- adi,range-microamp
else:
properties:
adi,range-microamp: false
required:
- adi,range-microvolt
additionalProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
dac@0 {
compatible = "adi,ad5758";
reg = <0>;
spi-max-frequency = <1000000>;
spi-cpha;
reset-gpios = <&gpio 22 0>;
adi,dc-dc-mode = <2>;
adi,range-microvolt = <0 10000000>;
adi,dc-dc-ilim-microamp = <200000>;
adi,slew-time-us = <125000>;
};
};
...
|
