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[mirror_ubuntu-focal-kernel.git] / Documentation / devicetree / bindings / hwmon / ntc_thermistor.txt
1 NTC Thermistor hwmon sensors
2 -------------------------------
3
4 Requires node properties:
5 - "compatible" value : one of
6 "epcos,b57330v2103"
7 "murata,ncp15wb473"
8 "murata,ncp18wb473"
9 "murata,ncp21wb473"
10 "murata,ncp03wb473"
11 "murata,ncp15wl333"
12 "murata,ncp03wf104"
13
14 /* Usage of vendor name "ntc" is deprecated */
15 <DEPRECATED> "ntc,ncp15wb473"
16 <DEPRECATED> "ntc,ncp18wb473"
17 <DEPRECATED> "ntc,ncp21wb473"
18 <DEPRECATED> "ntc,ncp03wb473"
19 <DEPRECATED> "ntc,ncp15wl333"
20
21 - "pullup-uv" Pull up voltage in micro volts
22 - "pullup-ohm" Pull up resistor value in ohms
23 - "pulldown-ohm" Pull down resistor value in ohms
24 - "connected-positive" Always ON, If not specified.
25 Status change is possible.
26 - "io-channels" Channel node of ADC to be used for
27 conversion.
28
29 Optional node properties:
30 - "#thermal-sensor-cells" Used to expose itself to thermal fw.
31
32 Read more about iio bindings at
33 Documentation/devicetree/bindings/iio/iio-bindings.txt
34
35 Example:
36 ncp15wb473@0 {
37 compatible = "murata,ncp15wb473";
38 pullup-uv = <1800000>;
39 pullup-ohm = <47000>;
40 pulldown-ohm = <0>;
41 io-channels = <&adc 3>;
42 };