xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/ti,tsc2046.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Texas Instruments TSC2046 touch screen controller.

maintainers:
  - Oleksij Rempel <o.rempel@pengutronix.de>

description: |
  TSC2046 is a touch screen controller with 8 channels ADC.

properties:
  compatible:
    enum:
      - ti,tsc2046e-adc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  vref-supply:
    description: Optional supply of the reference voltage

  "#io-channel-cells":
    const: 1

  '#address-cells':
    const: 1

  '#size-cells':
    const: 0

required:
  - compatible
  - reg

patternProperties:
  "^channel@[0-7]$":
    $ref: adc.yaml
    type: object

    properties:
      reg:
        description: |
          The channel number. It can have up to 8 channels
        items:
          minimum: 0
          maximum: 7

      settling-time-us: true
      oversampling-ratio: true

    required:
      - reg

    additionalProperties: false

allOf:
  - $ref: /schemas/spi/spi-peripheral-props.yaml#

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    spi {
        #address-cells = <1>;
        #size-cells = <0>;

        adc@0 {
            compatible = "ti,tsc2046e-adc";
            reg = <0>;
            spi-max-frequency = <1000000>;
            interrupts-extended = <&gpio3 20 IRQ_TYPE_LEVEL_LOW>;
            #io-channel-cells = <1>;

            #address-cells = <1>;
            #size-cells = <0>;

            channel@0 {
                reg = <0>;
            };
            channel@1 {
                reg = <1>;
                settling-time-us = <700>;
                oversampling-ratio = <5>;
            };
            channel@2 {
                reg = <2>;
            };
            channel@3 {
                reg = <3>;
                settling-time-us = <700>;
                oversampling-ratio = <5>;
            };
            channel@4 {
                reg = <4>;
                settling-time-us = <700>;
                oversampling-ratio = <5>;
            };
            channel@5 {
                reg = <5>;
                settling-time-us = <700>;
                oversampling-ratio = <5>;
            };
            channel@6 {
                reg = <6>;
            };
            channel@7 {
                reg = <7>;
            };
        };
    };
...