Documentation/devicetree/bindings/iio/potentiostat/ti,lmp91000.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/iio/potentiostat/ti,lmp91000.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Texas Instruments LMP91000 series of potentiostats with I2C control
   8
   9 maintainers:
  10   - Matt Ranostay <matt.ranostay@konsulko.com>
  11
  12 description: |
  13   Typically used as a signal conditioner for chemical sensors.
  14   LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf
  15   LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf
  16
  17 properties:
  18   compatible:
  19     enum:
  20       - ti,lmp91000
  21       - ti,lmp91002
  22
  23   reg:
  24     maxItems: 1
  25
  26   io-channels:
  27     maxItems: 1
  28
  29   ti,external-tia-resistor:
  30     $ref: /schemas/types.yaml#/definitions/flag
  31     description:
  32       If the property ti,tia-gain-ohm is not defined this needs to be set to
  33       signal that an external resistor value is being used.
  34
  35   ti,tia-gain-ohm:
  36     $ref: /schemas/types.yaml#/definitions/uint32
  37     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/uint32
  43     enum: [10, 33, 50, 100]
  44     description:
  45       Internal resistor load applied to the gas sensor.
  46       Default 100 Ohms.
  47
  48 required:
  49   - compatible
  50   - reg
  51   - io-channels
  52
  53 additionalProperties: false
  54
  55 examples:
  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 ...