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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip mcp4725 and mcp4726 DAC
maintainers:
- Tomas Novotny <tomas@novotny.cz>
properties:
compatible:
enum:
- microchip,mcp4725
- microchip,mcp4726
reg:
maxItems: 1
vdd-supply:
description: |
Provides both power and acts as the reference supply on the mcp4725.
For the mcp4726 it will be used as the reference voltage if vref-supply
is not provided.
vref-supply:
description:
Vref pin is used as a voltage reference when this supply is specified.
microchip,vref-buffered:
type: boolean
description: |
Enable buffering of the external Vref pin. This boolean is not valid
without the vref-supply. Quoting the datasheet: This is offered in
cases where the reference voltage does not have the current
capability not to drop its voltage when connected to the internal
resistor ladder circuit.
allOf:
- if:
properties:
compatible:
contains:
const: microchip,mcp4725
then:
properties:
vref-supply: false
required:
- vdd-supply
- if:
properties:
compatible:
contains:
const: microchip,mcp4726
then:
anyOf:
- required:
- vdd-supply
- required:
- vref-supply
- if:
not:
required:
- vref-supply
then:
properties:
microchip,vref-buffered: false
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
mcp4725@60 {
compatible = "microchip,mcp4725";
reg = <0x60>;
vdd-supply = <&vdac_vdd>;
};
};
...
|
