docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst
[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / iio / potentiostat / lmp91000.txt
1 * Texas Instruments LMP91000 series of potentiostats
2
3 LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf
4 LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf
5
6 Required 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
17 Optional 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
25 Example:
26
27 lmp91000@48 {
28         compatible = "ti,lmp91000";
29         reg = <0x48>;
30         ti,tia-gain-ohm = <7500>;
31         ti,rload = <100>;
32         io-channels = <&adc>;
33 };