xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/realtek,rtl9301-i2c.yaml (revision ae5de77ed78ae54d86cead5604869212e8008e6b)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/realtek,rtl9301-i2c.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Realtek RTL I2C Controller

maintainers:
  - Chris Packham <chris.packham@alliedtelesis.co.nz>

description:
  The RTL9300 SoC has two I2C controllers. Each of these has an SCL line (which
  if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be
  assigned to either I2C controller.

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - realtek,rtl9302b-i2c
              - realtek,rtl9302c-i2c
              - realtek,rtl9303-i2c
          - const: realtek,rtl9301-i2c
      - const: realtek,rtl9301-i2c

  reg:
    items:
      - description: Register offset and size this I2C controller.

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

patternProperties:
  '^i2c@[0-7]$':
    $ref: /schemas/i2c/i2c-controller.yaml
    unevaluatedProperties: false

    properties:
      reg:
        description: The SDA pin associated with the I2C bus.
        maxItems: 1

    required:
      - reg

required:
  - compatible
  - reg

additionalProperties: false

examples:
  - |
    i2c@36c {
      compatible = "realtek,rtl9301-i2c";
      reg = <0x36c 0x14>;
      #address-cells = <1>;
      #size-cells = <0>;

      i2c@2 {
        reg = <2>;
        #address-cells = <1>;
        #size-cells = <0>;
      };
    };