1f126890aSEmmanuel Vadot# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2f126890aSEmmanuel Vadot%YAML 1.2 3f126890aSEmmanuel Vadot--- 4f126890aSEmmanuel Vadot$id: http://devicetree.org/schemas/hwmon/adi,max31827.yaml# 5f126890aSEmmanuel Vadot$schema: http://devicetree.org/meta-schemas/core.yaml# 6f126890aSEmmanuel Vadot 7f126890aSEmmanuel Vadottitle: Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch 8f126890aSEmmanuel Vadot 9f126890aSEmmanuel Vadotmaintainers: 10f126890aSEmmanuel Vadot - Daniel Matyas <daniel.matyas@analog.com> 11f126890aSEmmanuel Vadot 12f126890aSEmmanuel Vadotdescription: | 13f126890aSEmmanuel Vadot Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch with 14f126890aSEmmanuel Vadot I2C Interface 15f126890aSEmmanuel Vadot https://www.analog.com/media/en/technical-documentation/data-sheets/MAX31827-MAX31829.pdf 16f126890aSEmmanuel Vadot 17f126890aSEmmanuel Vadotproperties: 18f126890aSEmmanuel Vadot compatible: 19f126890aSEmmanuel Vadot oneOf: 20f126890aSEmmanuel Vadot - const: adi,max31827 21f126890aSEmmanuel Vadot - items: 22f126890aSEmmanuel Vadot - enum: 23f126890aSEmmanuel Vadot - adi,max31828 24f126890aSEmmanuel Vadot - adi,max31829 25f126890aSEmmanuel Vadot - const: adi,max31827 26f126890aSEmmanuel Vadot 27f126890aSEmmanuel Vadot reg: 28f126890aSEmmanuel Vadot maxItems: 1 29f126890aSEmmanuel Vadot 30f126890aSEmmanuel Vadot vref-supply: 31f126890aSEmmanuel Vadot description: 32f126890aSEmmanuel Vadot Must have values in the interval (1.6V; 3.6V) in order for the device to 33f126890aSEmmanuel Vadot function correctly. 34f126890aSEmmanuel Vadot 35*84943d6fSEmmanuel Vadot adi,comp-int: 36*84943d6fSEmmanuel Vadot description: 37*84943d6fSEmmanuel Vadot If present interrupt mode is used. If not present comparator mode is used 38*84943d6fSEmmanuel Vadot (default). 39*84943d6fSEmmanuel Vadot type: boolean 40*84943d6fSEmmanuel Vadot 41*84943d6fSEmmanuel Vadot adi,alarm-pol: 42*84943d6fSEmmanuel Vadot description: 43*84943d6fSEmmanuel Vadot Sets the alarms active state. 44*84943d6fSEmmanuel Vadot - 0 = active low 45*84943d6fSEmmanuel Vadot - 1 = active high 46*84943d6fSEmmanuel Vadot $ref: /schemas/types.yaml#/definitions/uint32 47*84943d6fSEmmanuel Vadot enum: [0, 1] 48*84943d6fSEmmanuel Vadot 49*84943d6fSEmmanuel Vadot adi,fault-q: 50*84943d6fSEmmanuel Vadot description: 51*84943d6fSEmmanuel Vadot Select how many consecutive temperature faults must occur before 52*84943d6fSEmmanuel Vadot overtemperature or undertemperature faults are indicated in the 53*84943d6fSEmmanuel Vadot corresponding status bits. 54*84943d6fSEmmanuel Vadot $ref: /schemas/types.yaml#/definitions/uint32 55*84943d6fSEmmanuel Vadot enum: [1, 2, 4, 8] 56*84943d6fSEmmanuel Vadot 57*84943d6fSEmmanuel Vadot adi,timeout-enable: 58*84943d6fSEmmanuel Vadot description: 59*84943d6fSEmmanuel Vadot Enables timeout. Bus timeout resets the I2C-compatible interface when SCL 60*84943d6fSEmmanuel Vadot is low for more than 30ms (nominal). 61*84943d6fSEmmanuel Vadot type: boolean 62*84943d6fSEmmanuel Vadot 63*84943d6fSEmmanuel VadotallOf: 64*84943d6fSEmmanuel Vadot - if: 65*84943d6fSEmmanuel Vadot properties: 66*84943d6fSEmmanuel Vadot compatible: 67*84943d6fSEmmanuel Vadot contains: 68*84943d6fSEmmanuel Vadot const: adi,max31829 69*84943d6fSEmmanuel Vadot 70*84943d6fSEmmanuel Vadot then: 71*84943d6fSEmmanuel Vadot properties: 72*84943d6fSEmmanuel Vadot adi,alarm-pol: 73*84943d6fSEmmanuel Vadot default: 1 74*84943d6fSEmmanuel Vadot 75*84943d6fSEmmanuel Vadot else: 76*84943d6fSEmmanuel Vadot properties: 77*84943d6fSEmmanuel Vadot adi,alarm-pol: 78*84943d6fSEmmanuel Vadot default: 0 79*84943d6fSEmmanuel Vadot 80*84943d6fSEmmanuel Vadot - if: 81*84943d6fSEmmanuel Vadot properties: 82*84943d6fSEmmanuel Vadot compatible: 83*84943d6fSEmmanuel Vadot contains: 84*84943d6fSEmmanuel Vadot const: adi,max31827 85*84943d6fSEmmanuel Vadot 86*84943d6fSEmmanuel Vadot then: 87*84943d6fSEmmanuel Vadot properties: 88*84943d6fSEmmanuel Vadot adi,fault-q: 89*84943d6fSEmmanuel Vadot default: 1 90*84943d6fSEmmanuel Vadot 91*84943d6fSEmmanuel Vadot else: 92*84943d6fSEmmanuel Vadot properties: 93*84943d6fSEmmanuel Vadot adi,fault-q: 94*84943d6fSEmmanuel Vadot default: 4 95*84943d6fSEmmanuel Vadot 96*84943d6fSEmmanuel Vadot 97f126890aSEmmanuel Vadotrequired: 98f126890aSEmmanuel Vadot - compatible 99f126890aSEmmanuel Vadot - reg 100f126890aSEmmanuel Vadot - vref-supply 101f126890aSEmmanuel Vadot 102f126890aSEmmanuel VadotadditionalProperties: false 103f126890aSEmmanuel Vadot 104f126890aSEmmanuel Vadotexamples: 105f126890aSEmmanuel Vadot - | 106f126890aSEmmanuel Vadot i2c { 107f126890aSEmmanuel Vadot #address-cells = <1>; 108f126890aSEmmanuel Vadot #size-cells = <0>; 109f126890aSEmmanuel Vadot 110f126890aSEmmanuel Vadot temperature-sensor@42 { 111f126890aSEmmanuel Vadot compatible = "adi,max31827"; 112f126890aSEmmanuel Vadot reg = <0x42>; 113f126890aSEmmanuel Vadot vref-supply = <®_vdd>; 114*84943d6fSEmmanuel Vadot adi,comp-int; 115*84943d6fSEmmanuel Vadot adi,alarm-pol = <0>; 116*84943d6fSEmmanuel Vadot adi,fault-q = <1>; 117*84943d6fSEmmanuel Vadot adi,timeout-enable; 118f126890aSEmmanuel Vadot }; 119f126890aSEmmanuel Vadot }; 120f126890aSEmmanuel Vadot... 121