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: 35 adi,comp-int:
36 description: 36 description:
37 If present interrupt mode is used. If no 37 If present interrupt mode is used. If not present comparator mode is used
38 (default). 38 (default).
39 type: boolean 39 type: boolean
40 40
41 adi,alarm-pol: 41 adi,alarm-pol:
42 description: 42 description:
43 Sets the alarms active state. 43 Sets the alarms active state.
44 - 0 = active low 44 - 0 = active low
45 - 1 = active high 45 - 1 = active high
46 $ref: /schemas/types.yaml#/definitions/uin 46 $ref: /schemas/types.yaml#/definitions/uint32
47 enum: [0, 1] 47 enum: [0, 1]
48 48
49 adi,fault-q: 49 adi,fault-q:
50 description: 50 description:
51 Select how many consecutive temperature 51 Select how many consecutive temperature faults must occur before
52 overtemperature or undertemperature faul 52 overtemperature or undertemperature faults are indicated in the
53 corresponding status bits. 53 corresponding status bits.
54 $ref: /schemas/types.yaml#/definitions/uin 54 $ref: /schemas/types.yaml#/definitions/uint32
55 enum: [1, 2, 4, 8] 55 enum: [1, 2, 4, 8]
56 56
57 adi,timeout-enable: 57 adi,timeout-enable:
58 description: 58 description:
59 Enables timeout. Bus timeout resets the 59 Enables timeout. Bus timeout resets the I2C-compatible interface when SCL
60 is low for more than 30ms (nominal). 60 is low for more than 30ms (nominal).
61 type: boolean 61 type: boolean
62 62
63 allOf: 63 allOf:
64 - if: 64 - if:
65 properties: 65 properties:
66 compatible: 66 compatible:
67 contains: 67 contains:
68 const: adi,max31829 68 const: adi,max31829
69 69
70 then: 70 then:
71 properties: 71 properties:
72 adi,alarm-pol: 72 adi,alarm-pol:
73 default: 1 73 default: 1
74 74
75 else: 75 else:
76 properties: 76 properties:
77 adi,alarm-pol: 77 adi,alarm-pol:
78 default: 0 78 default: 0
79 79
80 - if: 80 - if:
81 properties: 81 properties:
82 compatible: 82 compatible:
83 contains: 83 contains:
84 const: adi,max31827 84 const: adi,max31827
85 85
86 then: 86 then:
87 properties: 87 properties:
88 adi,fault-q: 88 adi,fault-q:
89 default: 1 89 default: 1
90 90
91 else: 91 else:
92 properties: 92 properties:
93 adi,fault-q: 93 adi,fault-q:
94 default: 4 94 default: 4
95 95
96 96
97 required: 97 required:
98 - compatible 98 - compatible
99 - reg 99 - reg
100 - vref-supply 100 - vref-supply
101 101
102 additionalProperties: false 102 additionalProperties: false
103 103
104 examples: 104 examples:
105 - | 105 - |
106 i2c { 106 i2c {
107 #address-cells = <1>; 107 #address-cells = <1>;
108 #size-cells = <0>; 108 #size-cells = <0>;
109 109
110 temperature-sensor@42 { 110 temperature-sensor@42 {
111 compatible = "adi,max31827"; 111 compatible = "adi,max31827";
112 reg = <0x42>; 112 reg = <0x42>;
113 vref-supply = <®_vdd>; 113 vref-supply = <®_vdd>;
114 adi,comp-int; 114 adi,comp-int;
115 adi,alarm-pol = <0>; 115 adi,alarm-pol = <0>;
116 adi,fault-q = <1>; 116 adi,fault-q = <1>;
117 adi,timeout-enable; 117 adi,timeout-enable;
118 }; 118 };
119 }; 119 };
120 ... 120 ...
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