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GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
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# SPDX-License-Identifier: (GPL-2.0 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,ltc2991.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Analog Devices LTC2991 Octal I2C Voltage, Current and Temperature Monitor

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maintainers:

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  - Antoniu Miclaus <antoniu.miclaus@analog.com>

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description: |

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  The LTC2991 is used to monitor system temperatures, voltages and currents.

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  Through the I2C serial interface, the eight monitors can individually measure

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  supply voltages and can be paired for differential measurements of current

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  sense resistors or temperature sensing transistors.

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  Datasheet:

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    https://www.analog.com/en/products/ltc2991.html

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properties:

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  compatible:

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    const: adi,ltc2991

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  reg:

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    maxItems: 1

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  '#address-cells':

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    const: 1

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  '#size-cells':

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    const: 0

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  vcc-supply: true

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patternProperties:

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  "^channel@[0-3]$":

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    type: object

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    description:

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      Represents the differential/temperature channels.

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    properties:

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      reg:

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        description:

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          The channel number. LTC2991 can monitor 4 currents/temperatures.

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        items:

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          minimum: 0

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          maximum: 3

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      shunt-resistor-micro-ohms:

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        description:

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          The value of curent sense resistor in micro ohms. Pin configuration is

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          set for differential input pair.

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      adi,temperature-enable:

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        description:

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          Enables temperature readings. Pin configuration is set for remote

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          diode temperature measurement.

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        type: boolean

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    required:

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      - reg

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    allOf:

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      - if:

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          required:

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            - shunt-resistor-micro-ohms

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        then:

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          properties:

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            adi,temperature-enable: false

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    additionalProperties: false

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required:

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  - compatible

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  - reg

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  - vcc-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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        hwmon@48 {

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            compatible = "adi,ltc2991";

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            reg = <0x48>;

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            vcc-supply = <&vcc>;

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        };

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    };

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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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        hwmon@48 {

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            #address-cells = <1>;

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            #size-cells = <0>;

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            compatible = "adi,ltc2991";

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            reg = <0x48>;

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            vcc-supply = <&vcc>;

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            channel@0 {

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                    reg = <0x0>;

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                    shunt-resistor-micro-ohms = <100000>;

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            };

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            channel@1 {

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                    reg = <0x1>;

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                    shunt-resistor-micro-ohms = <100000>;

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            };

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            channel@2 {

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                    reg = <0x2>;

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                    adi,temperature-enable;

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            };

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            channel@3 {

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                    reg = <0x3>;

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                    adi,temperature-enable;

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            };

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        };

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    };

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...

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