xref: /freebsd/sys/contrib/device-tree/Bindings/iio/potentiostat/lmp91000.txt (revision 43a5ec4eb41567cc92586503212743d89686d78f)
1* Texas Instruments LMP91000 series of potentiostats
2
3LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf
4LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf
5
6Required properties:
7
8  - compatible: should be one of the following:
9                 "ti,lmp91000"
10                 "ti,lmp91002"
11  - reg: the I2C address of the device
12  - io-channels: the phandle of the iio provider
13
14  - ti,external-tia-resistor: if the property ti,tia-gain-ohm is not defined this
15    needs to be set to signal that an external resistor value is being used.
16
17Optional properties:
18
19  - ti,tia-gain-ohm: ohm value of the internal resistor for the transimpedance
20    amplifier. Must be 2750, 3500, 7000, 14000, 35000, 120000, or 350000 ohms.
21
22  - ti,rload-ohm: ohm value of the internal resistor load applied to the gas
23    sensor. Must be 10, 33, 50, or 100 (default) ohms.
24
25Example:
26
27lmp91000@48 {
28	compatible = "ti,lmp91000";
29	reg = <0x48>;
30	ti,tia-gain-ohm = <7500>;
31	ti,rload = <100>;
32	io-channels = <&adc>;
33};
34