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# 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>;
};
};
...
|
