1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/iio/dac/mic 4 $id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Microchip mcp4725 and mcp4726 DAC 7 title: Microchip mcp4725 and mcp4726 DAC
8 8
9 maintainers: 9 maintainers:
10 - Tomas Novotny <tomas@novotny.cz> 10 - Tomas Novotny <tomas@novotny.cz>
11 11
12 properties: 12 properties:
13 compatible: 13 compatible:
14 enum: 14 enum:
15 - microchip,mcp4725 15 - microchip,mcp4725
16 - microchip,mcp4726 16 - microchip,mcp4726
17 17
18 reg: 18 reg:
19 maxItems: 1 19 maxItems: 1
20 20
21 vdd-supply: 21 vdd-supply:
22 description: | 22 description: |
23 Provides both power and acts as the refe 23 Provides both power and acts as the reference supply on the mcp4725.
24 For the mcp4726 it will be used as the r 24 For the mcp4726 it will be used as the reference voltage if vref-supply
25 is not provided. 25 is not provided.
26 26
27 vref-supply: 27 vref-supply:
28 description: 28 description:
29 Vref pin is used as a voltage reference 29 Vref pin is used as a voltage reference when this supply is specified.
30 30
31 microchip,vref-buffered: 31 microchip,vref-buffered:
32 type: boolean 32 type: boolean
33 description: | 33 description: |
34 Enable buffering of the external Vref pi 34 Enable buffering of the external Vref pin. This boolean is not valid
35 without the vref-supply. Quoting the dat 35 without the vref-supply. Quoting the datasheet: This is offered in
36 cases where the reference voltage does n 36 cases where the reference voltage does not have the current
37 capability not to drop its voltage when 37 capability not to drop its voltage when connected to the internal
38 resistor ladder circuit. 38 resistor ladder circuit.
39 39
40 allOf: 40 allOf:
41 - if: 41 - if:
42 properties: 42 properties:
43 compatible: 43 compatible:
44 contains: 44 contains:
45 const: microchip,mcp4725 45 const: microchip,mcp4725
46 then: 46 then:
47 properties: 47 properties:
48 vref-supply: false 48 vref-supply: false
49 required: 49 required:
50 - vdd-supply 50 - vdd-supply
51 51
52 - if: 52 - if:
53 properties: 53 properties:
54 compatible: 54 compatible:
55 contains: 55 contains:
56 const: microchip,mcp4726 56 const: microchip,mcp4726
57 then: 57 then:
58 anyOf: 58 anyOf:
59 - required: 59 - required:
60 - vdd-supply 60 - vdd-supply
61 - required: 61 - required:
62 - vref-supply 62 - vref-supply
63 63
64 - if: 64 - if:
65 not: 65 not:
66 required: 66 required:
67 - vref-supply 67 - vref-supply
68 then: 68 then:
69 properties: 69 properties:
70 microchip,vref-buffered: false 70 microchip,vref-buffered: false
71 71
72 required: 72 required:
73 - compatible 73 - compatible
74 - reg 74 - reg
75 75
76 additionalProperties: false 76 additionalProperties: false
77 77
78 examples: 78 examples:
79 - | 79 - |
80 i2c { 80 i2c {
81 #address-cells = <1>; 81 #address-cells = <1>;
82 #size-cells = <0>; 82 #size-cells = <0>;
83 83
84 mcp4725@60 { 84 mcp4725@60 {
85 compatible = "microchip,mcp4725"; 85 compatible = "microchip,mcp4725";
86 reg = <0x60>; 86 reg = <0x60>;
87 vdd-supply = <&vdac_vdd>; 87 vdd-supply = <&vdac_vdd>;
88 }; 88 };
89 }; 89 };
90 ... 90 ...
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