Hi, On Tue, Sep 26, 2023 at 05:05:29PM +0300, Antoniu Miclaus wrote: > Add dt-bindings for ltc2991 octal i2c voltage, current and temperature > monitor. > > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx> > --- > .../bindings/hwmon/adi,ltc2991.yaml | 114 ++++++++++++++++++ > 1 file changed, 114 insertions(+) > create mode 100644 Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml > > diff --git a/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml > new file mode 100644 > index 000000000000..6174e0113ef8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml > @@ -0,0 +1,114 @@ > +# 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@xxxxxxxxxx> > + > +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: > + enum: > + - adi,ltc2991 if you aren't expecting to add other devices that can share the binding, make this const: rather than enum:. > + > + reg: > + maxItems: 1 > + > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + vcc-supply: true > + > +patternProperties: > + "^channel@[0-3]$": > + type: object > + description: | The |s are only needed when you have formatting to preserve. > + Represents the differential/temperature channels. > + > + properties: > + reg: > + description: | > + The channel number. LTC2992 can monitor 4 currents/temperatures. > + items: > + minimum: 0 > + maximum: 3 > + > + shunt-resistor-mili-ohms: The standard properties here are ohms and micro-ohms. Also, "milli" has 2 ls. > + description: > + The value of curent sense resistor in miliohms. Enables differential > + input pair. > + > + temperature-enable: This seems like a vendor property that should have a vendor prefix? > + description: > + Enables temperature readings for a input pair. TBH, this seems like it is used just to control software behaviour. Why would you want to actually disable this in DT? Cheers, Conor. > + > +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-mili-ohms = <100>; > + }; > + > + channel@1 { > + reg = <0x1>; > + shunt-resistor-mili-ohms = <100>; > + }; > + > + channel@2 { > + reg = <0x2>; > + temperature-enable; > + }; > + > + channel@3 { > + reg = <0x3>; > + temperature-enable; > + }; > + }; > + }; > +... > -- > 2.42.0 >
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