xref: /openbmc/linux/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml (revision 9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e)

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/ti,ads7924.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: TI ADS7924 4 channels 12 bits I2C analog to digital converter

maintainers:
  - Hugo Villeneuve <hvilleneuve@dimonoff.com>

description: |
  Texas Instruments ADS7924 4 channels 12 bits I2C analog to digital converter

  Specifications:
    https://www.ti.com/lit/gpn/ads7924

properties:
  compatible:
    const: ti,ads7924

  reg:
    maxItems: 1

  vref-supply:
    description:
      The regulator supply for the ADC reference voltage (AVDD)

  reset-gpios:
    maxItems: 1

  interrupts:
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

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

patternProperties:
  "^channel@[0-3]+$":
    $ref: adc.yaml

    description: |
      Represents the external channels which are connected to the ADC.

    properties:
      reg:
        description: |
          The channel number. It can have up to 4 channels numbered from 0 to 3.
        items:
          - minimum: 0
            maximum: 3

      label: true

    required:
      - reg

    additionalProperties: false

additionalProperties: false

required:
  - compatible
  - reg
  - vref-supply
  - "#address-cells"
  - "#size-cells"

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/gpio/gpio.h>
    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        adc@48 {
            compatible = "ti,ads7924";
            reg = <0x48>;
            vref-supply = <&ads7924_reg>;
            reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
            interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
            interrupt-parent = <&gpio>;
            #address-cells = <1>;
            #size-cells = <0>;
            channel@0 {
                reg = <0>;
                label = "CH0";
            };
            channel@1 {
                reg = <1>;
                label = "CH1";
            };
            channel@2 {
                reg = <2>;
                label = "CH2";
            };
            channel@3 {
                reg = <3>;
                label = "CH3";
            };
        };
    };
...