xref: /linux/Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml (revision 26fbb4c8c7c3ee9a4c3b4de555a8587b5a19154e) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Microchip mcp4725 and mcp4726 DAC
8
9maintainers:
10  - Tomas Novotny <tomas@novotny.cz>
11
12properties:
13  compatible:
14    enum:
15      - microchip,mcp4725
16      - microchip,mcp4726
17
18  reg:
19    maxItems: 1
20
21  vdd-supply:
22    description: |
23      Provides both power and acts as the reference supply on the mcp4725.
24      For the mcp4726 it will be used as the reference voltage if vref-supply
25      is not provided.
26
27  vref-supply:
28    description:
29      Vref pin is used as a voltage reference when this supply is specified.
30
31  microchip,vref-buffered:
32    type: boolean
33    description: |
34      Enable buffering of the external Vref pin. This boolean is not valid
35      without the vref-supply. Quoting the datasheet: This is offered in
36      cases where the reference voltage does not have the current
37      capability not to drop its voltage when connected to the internal
38      resistor ladder circuit.
39
40allOf:
41  - if:
42      not:
43        properties:
44          compatible:
45            contains:
46              const: microchip,mcp4726
47    then:
48      properties:
49        vref-supply: false
50        microchip,vref-buffered: false
51
52required:
53  - compatible
54  - reg
55  - vdd-supply
56
57additionalProperties: false
58
59examples:
60  - |
61    i2c {
62        #address-cells = <1>;
63        #size-cells = <0>;
64
65        mcp4725@60 {
66            compatible = "microchip,mcp4725";
67            reg = <0x60>;
68            vdd-supply = <&vdac_vdd>;
69        };
70    };
71...
72