121 lines
2.6 KiB
YAML
121 lines
2.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/hwmon/adi,max31827.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch
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maintainers:
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- Daniel Matyas <daniel.matyas@analog.com>
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description: |
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Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch with
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I2C Interface
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https://www.analog.com/media/en/technical-documentation/data-sheets/MAX31827-MAX31829.pdf
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properties:
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compatible:
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oneOf:
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- const: adi,max31827
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- items:
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- enum:
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- adi,max31828
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- adi,max31829
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- const: adi,max31827
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reg:
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maxItems: 1
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vref-supply:
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description:
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Must have values in the interval (1.6V; 3.6V) in order for the device to
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function correctly.
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adi,comp-int:
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description:
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If present interrupt mode is used. If not present comparator mode is used
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(default).
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type: boolean
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adi,alarm-pol:
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description:
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Sets the alarms active state.
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- 0 = active low
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- 1 = active high
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1]
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adi,fault-q:
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description:
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Select how many consecutive temperature faults must occur before
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overtemperature or undertemperature faults are indicated in the
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corresponding status bits.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2, 4, 8]
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adi,timeout-enable:
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description:
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Enables timeout. Bus timeout resets the I2C-compatible interface when SCL
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is low for more than 30ms (nominal).
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type: boolean
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: adi,max31829
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then:
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properties:
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adi,alarm-pol:
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default: 1
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else:
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properties:
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adi,alarm-pol:
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default: 0
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- if:
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properties:
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compatible:
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contains:
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const: adi,max31827
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then:
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properties:
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adi,fault-q:
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default: 1
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else:
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properties:
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adi,fault-q:
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default: 4
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required:
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- compatible
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- reg
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- vref-supply
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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temperature-sensor@42 {
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compatible = "adi,max31827";
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reg = <0x42>;
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vref-supply = <®_vdd>;
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adi,comp-int;
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adi,alarm-pol = <0>;
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adi,fault-q = <1>;
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adi,timeout-enable;
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};
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};
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...
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