| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| |
| $id: http://devicetree.org/schemas/hwmon/adi,ltc2991.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Analog Devices LTC2991 Octal I2C Voltage, Current and Temperature Monitor |
| |
| maintainers: |
| - Antoniu Miclaus <antoniu.miclaus@analog.com> |
| |
| description: | |
| The LTC2991 is used to monitor system temperatures, voltages and currents. |
| Through the I2C serial interface, the eight monitors can individually measure |
| supply voltages and can be paired for differential measurements of current |
| sense resistors or temperature sensing transistors. |
| |
| Datasheet: |
| https://www.analog.com/en/products/ltc2991.html |
| |
| properties: |
| compatible: |
| const: adi,ltc2991 |
| |
| reg: |
| maxItems: 1 |
| |
| '#address-cells': |
| const: 1 |
| |
| '#size-cells': |
| const: 0 |
| |
| vcc-supply: true |
| |
| patternProperties: |
| "^channel@[0-3]$": |
| type: object |
| description: |
| Represents the differential/temperature channels. |
| |
| properties: |
| reg: |
| description: |
| The channel number. LTC2991 can monitor 4 currents/temperatures. |
| items: |
| minimum: 0 |
| maximum: 3 |
| |
| shunt-resistor-micro-ohms: |
| description: |
| The value of curent sense resistor in micro ohms. Pin configuration is |
| set for differential input pair. |
| |
| adi,temperature-enable: |
| description: |
| Enables temperature readings. Pin configuration is set for remote |
| diode temperature measurement. |
| type: boolean |
| |
| required: |
| - reg |
| |
| allOf: |
| - if: |
| required: |
| - shunt-resistor-micro-ohms |
| then: |
| properties: |
| adi,temperature-enable: false |
| |
| additionalProperties: false |
| |
| required: |
| - compatible |
| - reg |
| - vcc-supply |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| hwmon@48 { |
| compatible = "adi,ltc2991"; |
| reg = <0x48>; |
| vcc-supply = <&vcc>; |
| }; |
| }; |
| - | |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| hwmon@48 { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| compatible = "adi,ltc2991"; |
| reg = <0x48>; |
| vcc-supply = <&vcc>; |
| |
| channel@0 { |
| reg = <0x0>; |
| shunt-resistor-micro-ohms = <100000>; |
| }; |
| |
| channel@1 { |
| reg = <0x1>; |
| shunt-resistor-micro-ohms = <100000>; |
| }; |
| |
| channel@2 { |
| reg = <0x2>; |
| adi,temperature-enable; |
| }; |
| |
| channel@3 { |
| reg = <0x3>; |
| adi,temperature-enable; |
| }; |
| }; |
| }; |
| ... |
