Kernel-4.18.0-80.el8_ntc_thermistor

NTC Thermistor hwmon sensors

Requires node properties:

  • “compatible” value : one of
    “epcos,b57330v2103”
    “murata,ncp15wb473”
    “murata,ncp18wb473”
    “murata,ncp21wb473”
    “murata,ncp03wb473”
    “murata,ncp15wl333”
    “murata,ncp03wf104”
    “murata,ncp15xh103”

/* Usage of vendor name “ntc” is deprecated */
“ntc,ncp15wb473”
“ntc,ncp18wb473”
“ntc,ncp21wb473”
“ntc,ncp03wb473”
“ntc,ncp15wl333”

  • “pullup-uv” Pull up voltage in micro volts
  • “pullup-ohm” Pull up resistor value in ohms
  • “pulldown-ohm” Pull down resistor value in ohms
  • “connected-positive” Always ON, If not specified.
      Status change is possible.
    
  • “io-channels” Channel node of ADC to be used for
      conversion.
    

Optional node properties:

  • “#thermal-sensor-cells” Used to expose itself to thermal fw.

Read more about iio bindings at
Documentation/devicetree/bindings/iio/iio-bindings.txt

Example:
ncp15wb473@0 {
compatible = “murata,ncp15wb473”;
pullup-uv = <1800000>;
pullup-ohm = <47000>;
pulldown-ohm = <0>;
io-channels = <&adc 3>;
};