1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/hwmon/adi,m 4 $id: http://devicetree.org/schemas/hwmon/adi,max31827.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Analog Devices MAX31827, MAX31828, MAX3 7 title: Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch
8 8
9 maintainers: 9 maintainers:
10 - Daniel Matyas <daniel.matyas@analog.com> 10 - Daniel Matyas <daniel.matyas@analog.com>
11 11
12 description: | 12 description: |
13 Analog Devices MAX31827, MAX31828, MAX31829 13 Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch with
14 I2C Interface 14 I2C Interface
15 https://www.analog.com/media/en/technical-do 15 https://www.analog.com/media/en/technical-documentation/data-sheets/MAX31827-MAX31829.pdf
16 16
17 properties: 17 properties:
18 compatible: 18 compatible:
19 oneOf: 19 oneOf:
20 - const: adi,max31827 20 - const: adi,max31827
21 - items: 21 - items:
22 - enum: 22 - enum:
23 - adi,max31828 23 - adi,max31828
24 - adi,max31829 24 - adi,max31829
25 - const: adi,max31827 25 - const: adi,max31827
26 26
27 reg: 27 reg:
28 maxItems: 1 28 maxItems: 1
29 29
30 vref-supply: 30 vref-supply:
31 description: 31 description:
32 Must have values in the interval (1.6V; 32 Must have values in the interval (1.6V; 3.6V) in order for the device to
33 function correctly. 33 function correctly.
34 34
35 adi,comp-int: <<
36 description: <<
37 If present interrupt mode is used. If no <<
38 (default). <<
39 type: boolean <<
40 <<
41 adi,alarm-pol: <<
42 description: <<
43 Sets the alarms active state. <<
44 - 0 = active low <<
45 - 1 = active high <<
46 $ref: /schemas/types.yaml#/definitions/uin <<
47 enum: [0, 1] <<
48 <<
49 adi,fault-q: <<
50 description: <<
51 Select how many consecutive temperature <<
52 overtemperature or undertemperature faul <<
53 corresponding status bits. <<
54 $ref: /schemas/types.yaml#/definitions/uin <<
55 enum: [1, 2, 4, 8] <<
56 <<
57 adi,timeout-enable: <<
58 description: <<
59 Enables timeout. Bus timeout resets the <<
60 is low for more than 30ms (nominal). <<
61 type: boolean <<
62 <<
63 allOf: <<
64 - if: <<
65 properties: <<
66 compatible: <<
67 contains: <<
68 const: adi,max31829 <<
69 <<
70 then: <<
71 properties: <<
72 adi,alarm-pol: <<
73 default: 1 <<
74 <<
75 else: <<
76 properties: <<
77 adi,alarm-pol: <<
78 default: 0 <<
79 <<
80 - if: <<
81 properties: <<
82 compatible: <<
83 contains: <<
84 const: adi,max31827 <<
85 <<
86 then: <<
87 properties: <<
88 adi,fault-q: <<
89 default: 1 <<
90 <<
91 else: <<
92 properties: <<
93 adi,fault-q: <<
94 default: 4 <<
95 <<
96 <<
97 required: 35 required:
98 - compatible 36 - compatible
99 - reg 37 - reg
100 - vref-supply 38 - vref-supply
101 39
102 additionalProperties: false 40 additionalProperties: false
103 41
104 examples: 42 examples:
105 - | 43 - |
106 i2c { 44 i2c {
107 #address-cells = <1>; 45 #address-cells = <1>;
108 #size-cells = <0>; 46 #size-cells = <0>;
109 47
110 temperature-sensor@42 { 48 temperature-sensor@42 {
111 compatible = "adi,max31827"; 49 compatible = "adi,max31827";
112 reg = <0x42>; 50 reg = <0x42>;
113 vref-supply = <®_vdd>; 51 vref-supply = <®_vdd>;
114 adi,comp-int; <<
115 adi,alarm-pol = <0>; <<
116 adi,fault-q = <1>; <<
117 adi,timeout-enable; <<
118 }; 52 };
119 }; 53 };
120 ... 54 ...
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