69 lines
1.6 KiB
YAML
69 lines
1.6 KiB
YAML
# 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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