| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/hwmon/adi,max31827.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch |
| 8 | |
| 9 | maintainers: |
| 10 | - Daniel Matyas <daniel.matyas@analog.com> |
| 11 | |
| 12 | description: | |
| 13 | Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch with |
| 14 | I2C Interface |
| 15 | https://www.analog.com/media/en/technical-documentation/data-sheets/MAX31827-MAX31829.pdf |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | oneOf: |
| 20 | - const: adi,max31827 |
| 21 | - items: |
| 22 | - enum: |
| 23 | - adi,max31828 |
| 24 | - adi,max31829 |
| 25 | - const: adi,max31827 |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | vref-supply: |
| 31 | description: |
| 32 | Must have values in the interval (1.6V; 3.6V) in order for the device to |
| 33 | function correctly. |
| 34 | |
| 35 | adi,comp-int: |
| 36 | description: |
| 37 | If present interrupt mode is used. If not present comparator mode is used |
| 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/uint32 |
| 47 | enum: [0, 1] |
| 48 | |
| 49 | adi,fault-q: |
| 50 | description: |
| 51 | Select how many consecutive temperature faults must occur before |
| 52 | overtemperature or undertemperature faults are indicated in the |
| 53 | corresponding status bits. |
| 54 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 55 | enum: [1, 2, 4, 8] |
| 56 | |
| 57 | adi,timeout-enable: |
| 58 | description: |
| 59 | Enables timeout. Bus timeout resets the I2C-compatible interface when SCL |
| 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: |
| 98 | - compatible |
| 99 | - reg |
| 100 | - vref-supply |
| 101 | |
| 102 | additionalProperties: false |
| 103 | |
| 104 | examples: |
| 105 | - | |
| 106 | i2c { |
| 107 | #address-cells = <1>; |
| 108 | #size-cells = <0>; |
| 109 | |
| 110 | temperature-sensor@42 { |
| 111 | compatible = "adi,max31827"; |
| 112 | reg = <0x42>; |
| 113 | vref-supply = <®_vdd>; |
| 114 | adi,comp-int; |
| 115 | adi,alarm-pol = <0>; |
| 116 | adi,fault-q = <1>; |
| 117 | adi,timeout-enable; |
| 118 | }; |
| 119 | }; |
| 120 | ... |