# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/iio/potentiostat/ti,lmp91000.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Texas Instruments LMP91000 series of potentiostats with I2C control maintainers: - Matt Ranostay <matt.ranostay@konsulko.com> description: | Typically used as a signal conditioner for chemical sensors. LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf properties: compatible: enum: - ti,lmp91000 - ti,lmp91002 reg: maxItems: 1 io-channels: maxItems: 1 ti,external-tia-resistor: $ref: /schemas/types.yaml#/definitions/flag description: If the property ti,tia-gain-ohm is not defined this needs to be set to signal that an external resistor value is being used. ti,tia-gain-ohm: $ref: /schemas/types.yaml#/definitions/uint32 enum: [2750, 3500, 7000, 14000, 35000, 120000, 350000] description: Internal resistor for the transimpedance amplifier. ti,rload-ohm: $ref: /schemas/types.yaml#/definitions/uint32 enum: [10, 33, 50, 100] description: Internal resistor load applied to the gas sensor. Default 100 Ohms. required: - compatible - reg - io-channels additionalProperties: false examples: - | i2c { #address-cells = <1>; #size-cells = <0>; lmp91000@48 { compatible = "ti,lmp91000"; reg = <0x48>; ti,tia-gain-ohm = <7000>; ti,rload-ohm = <100>; io-channels = <&adc>; }; }; ...