| # 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>; |
| }; |
| }; |
| ... |
