1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adi 4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7949.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Analog Devices AD7949/AD7682/AD7689 ana 7 title: Analog Devices AD7949/AD7682/AD7689 analog to digital converters
8 8
9 maintainers: 9 maintainers:
10 - Charles-Antoine Couret <charles-antoine.cou 10 - Charles-Antoine Couret <charles-antoine.couret@essensium.com>
11 11
12 description: | 12 description: |
13 Specifications on the converters can be foun 13 Specifications on the converters can be found at:
14 AD7949: 14 AD7949:
15 https://www.analog.com/media/en/technica 15 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf
16 AD7682/AD7698: 16 AD7682/AD7698:
17 https://www.analog.com/media/en/technica 17 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7682_7689.pdf
18 18
19 properties: 19 properties:
20 compatible: 20 compatible:
21 enum: 21 enum:
22 - adi,ad7682 22 - adi,ad7682
23 - adi,ad7689 23 - adi,ad7689
24 - adi,ad7949 24 - adi,ad7949
25 25
26 reg: 26 reg:
27 maxItems: 1 27 maxItems: 1
28 28
29 vrefin-supply: 29 vrefin-supply:
30 description: 30 description:
31 Buffered ADC reference voltage supply. 31 Buffered ADC reference voltage supply.
32 32
33 vref-supply: 33 vref-supply:
34 description: 34 description:
35 Unbuffered ADC reference voltage supply. 35 Unbuffered ADC reference voltage supply.
36 36
37 adi,internal-ref-microvolt: 37 adi,internal-ref-microvolt:
38 description: | 38 description: |
39 Internal reference voltage selection in 39 Internal reference voltage selection in microvolts.
40 40
41 If no internal reference is specified, t 41 If no internal reference is specified, the channel will default to the
42 external reference defined by vrefin-sup 42 external reference defined by vrefin-supply (or vref-supply).
43 vrefin-supply will take precedence over 43 vrefin-supply will take precedence over vref-supply if both are defined.
44 44
45 If no supplies are defined, the referenc 45 If no supplies are defined, the reference selection will default to
46 4096mV internal reference. 46 4096mV internal reference.
47 47
48 enum: [2500000, 4096000] 48 enum: [2500000, 4096000]
49 default: 4096000 49 default: 4096000
50 50
51 51
52 '#io-channel-cells': 52 '#io-channel-cells':
53 const: 1 53 const: 1
54 54
55 '#address-cells': 55 '#address-cells':
56 const: 1 56 const: 1
57 57
58 '#size-cells': 58 '#size-cells':
59 const: 0 59 const: 0
60 60
61 required: 61 required:
62 - compatible 62 - compatible
63 - reg 63 - reg
64 64
65 allOf: 65 allOf:
66 - $ref: /schemas/spi/spi-peripheral-props.ya 66 - $ref: /schemas/spi/spi-peripheral-props.yaml#
67 67
68 unevaluatedProperties: false 68 unevaluatedProperties: false
69 69
70 examples: 70 examples:
71 - | 71 - |
72 spi { 72 spi {
73 #address-cells = <1>; 73 #address-cells = <1>;
74 #size-cells = <0>; 74 #size-cells = <0>;
75 75
76 adc@0 { 76 adc@0 {
77 #address-cells = <1>; 77 #address-cells = <1>;
78 #size-cells = <0>; 78 #size-cells = <0>;
79 79
80 compatible = "adi,ad7949"; 80 compatible = "adi,ad7949";
81 reg = <0>; 81 reg = <0>;
82 vref-supply = <&vdd_supply>; 82 vref-supply = <&vdd_supply>;
83 }; 83 };
84 84
85 adc@1 { 85 adc@1 {
86 #address-cells = <1>; 86 #address-cells = <1>;
87 #size-cells = <0>; 87 #size-cells = <0>;
88 88
89 compatible = "adi,ad7949"; 89 compatible = "adi,ad7949";
90 reg = <1>; 90 reg = <1>;
91 vrefin-supply = <&vdd_supply>; 91 vrefin-supply = <&vdd_supply>;
92 }; 92 };
93 93
94 adc@2 { 94 adc@2 {
95 #address-cells = <1>; 95 #address-cells = <1>;
96 #size-cells = <0>; 96 #size-cells = <0>;
97 97
98 compatible = "adi,ad7949"; 98 compatible = "adi,ad7949";
99 reg = <2>; 99 reg = <2>;
100 adi,internal-ref-microvolt = <4096 100 adi,internal-ref-microvolt = <4096000>;
101 }; 101 };
102 }; 102 };
103 ... 103 ...
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