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1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/iio/potentiostat/ti,lmp91000.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Texas Instruments LMP91000 series of potentiostats with I2C control8 9maintainers:10 - Matt Ranostay <matt.ranostay@konsulko.com>11 12description: |13 Typically used as a signal conditioner for chemical sensors.14 LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf15 LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf16 17properties:18 compatible:19 enum:20 - ti,lmp9100021 - ti,lmp9100222 23 reg:24 maxItems: 125 26 io-channels:27 maxItems: 128 29 ti,external-tia-resistor:30 $ref: /schemas/types.yaml#/definitions/flag31 description:32 If the property ti,tia-gain-ohm is not defined this needs to be set to33 signal that an external resistor value is being used.34 35 ti,tia-gain-ohm:36 $ref: /schemas/types.yaml#/definitions/uint3237 enum: [2750, 3500, 7000, 14000, 35000, 120000, 350000]38 description:39 Internal resistor for the transimpedance amplifier.40 41 ti,rload-ohm:42 $ref: /schemas/types.yaml#/definitions/uint3243 enum: [10, 33, 50, 100]44 description:45 Internal resistor load applied to the gas sensor.46 Default 100 Ohms.47 48required:49 - compatible50 - reg51 - io-channels52 53additionalProperties: false54 55examples:56 - |57 i2c {58 #address-cells = <1>;59 #size-cells = <0>;60 lmp91000@48 {61 compatible = "ti,lmp91000";62 reg = <0x48>;63 ti,tia-gain-ohm = <7000>;64 ti,rload-ohm = <100>;65 io-channels = <&adc>;66 };67 };68...69