0001 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Microchip mcp4725 and mcp4726 DAC
0008
0009 maintainers:
0010 - Tomas Novotny <tomas@novotny.cz>
0011
0012 properties:
0013 compatible:
0014 enum:
0015 - microchip,mcp4725
0016 - microchip,mcp4726
0017
0018 reg:
0019 maxItems: 1
0020
0021 vdd-supply:
0022 description: |
0023 Provides both power and acts as the reference supply on the mcp4725.
0024 For the mcp4726 it will be used as the reference voltage if vref-supply
0025 is not provided.
0026
0027 vref-supply:
0028 description:
0029 Vref pin is used as a voltage reference when this supply is specified.
0030
0031 microchip,vref-buffered:
0032 type: boolean
0033 description: |
0034 Enable buffering of the external Vref pin. This boolean is not valid
0035 without the vref-supply. Quoting the datasheet: This is offered in
0036 cases where the reference voltage does not have the current
0037 capability not to drop its voltage when connected to the internal
0038 resistor ladder circuit.
0039
0040 allOf:
0041 - if:
0042 properties:
0043 compatible:
0044 contains:
0045 const: microchip,mcp4725
0046 then:
0047 properties:
0048 vref-supply: false
0049 required:
0050 - vdd-supply
0051
0052 - if:
0053 properties:
0054 compatible:
0055 contains:
0056 const: microchip,mcp4726
0057 then:
0058 anyOf:
0059 - required:
0060 - vdd-supply
0061 - required:
0062 - vref-supply
0063
0064 - if:
0065 not:
0066 required:
0067 - vref-supply
0068 then:
0069 properties:
0070 microchip,vref-buffered: false
0071
0072 required:
0073 - compatible
0074 - reg
0075
0076 additionalProperties: false
0077
0078 examples:
0079 - |
0080 i2c {
0081 #address-cells = <1>;
0082 #size-cells = <0>;
0083
0084 mcp4725@60 {
0085 compatible = "microchip,mcp4725";
0086 reg = <0x60>;
0087 vdd-supply = <&vdac_vdd>;
0088 };
0089 };
0090 ...
