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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/potentiostat/ti,lmp91000.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/iio/potentiostat/ti,lmp91000.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Texas Instruments LMP91000 series of potentiostats with I2C control

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maintainers:

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  - Matt Ranostay <matt.ranostay@konsulko.com>

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description: |

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  Typically used as a signal conditioner for chemical sensors.

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  LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf

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  LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf

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properties:

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  compatible:

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    enum:

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      - ti,lmp91000

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      - ti,lmp91002

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  reg:

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    maxItems: 1

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  io-channels:

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    maxItems: 1

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  ti,external-tia-resistor:

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    $ref: /schemas/types.yaml#/definitions/flag

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    description:

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      If the property ti,tia-gain-ohm is not defined this needs to be set to

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      signal that an external resistor value is being used.

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  ti,tia-gain-ohm:

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    $ref: /schemas/types.yaml#/definitions/uint32

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    enum: [2750, 3500, 7000, 14000, 35000, 120000, 350000]

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    description:

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      Internal resistor for the transimpedance amplifier.

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  ti,rload-ohm:

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    $ref: /schemas/types.yaml#/definitions/uint32

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    enum: [10, 33, 50, 100]

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    description:

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      Internal resistor load applied to the gas sensor.

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      Default 100 Ohms.

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required:

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  - compatible

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  - reg

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  - io-channels

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additionalProperties: false

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examples:

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  - |

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    i2c {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        lmp91000@48 {

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            compatible = "ti,lmp91000";

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            reg = <0x48>;

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            ti,tia-gain-ohm = <7000>;

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            ti,rload-ohm = <100>;

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            io-channels = <&adc>;

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        };

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    };

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...

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