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

title: Realtek Switch with Internal CPU

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

description:
  The RTL9300 is a series of is an Ethernet switches with an integrated CPU. A
  number of different peripherals are accessed through a common register block,
  represented here as a syscon node.

properties:
  compatible:
    items:
      - enum:
          - realtek,rtl9301-switch
          - realtek,rtl9302b-switch
          - realtek,rtl9302c-switch
          - realtek,rtl9303-switch
      - const: syscon
      - const: simple-mfd

  reg:
    maxItems: 1

  '#address-cells':
    const: 1

  '#size-cells':
    const: 1

patternProperties:
  'reboot@[0-9a-f]+$':
    $ref: /schemas/power/reset/syscon-reboot.yaml#

  'i2c@[0-9a-f]+$':
    $ref: /schemas/i2c/realtek,rtl9301-i2c.yaml#

required:
  - compatible
  - reg

additionalProperties: false

examples:
  - |
    ethernet-switch@1b000000 {
      compatible = "realtek,rtl9301-switch", "syscon", "simple-mfd";
      reg = <0x1b000000 0x10000>;
      #address-cells = <1>;
      #size-cells = <1>;

      reboot@c {
        compatible = "syscon-reboot";
        reg = <0x0c 0x4>;
        value = <0x01>;
      };

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

        i2c@0 {
          reg = <0>;
          #address-cells = <1>;
          #size-cells = <0>;
          gpio@20 {
            compatible = "nxp,pca9555";
            gpio-controller;
            #gpio-cells = <2>;
            reg = <0x20>;
          };
        };

        i2c@2 {
          reg = <2>;
          #address-cells = <1>;
          #size-cells = <0>;
          gpio@20 {
            compatible = "nxp,pca9555";
            gpio-controller;
            #gpio-cells = <2>;
            reg = <0x20>;
          };
        };
      };

      i2c@388 {
        compatible = "realtek,rtl9301-i2c";
        reg = <0x388 0x14>;
        #address-cells = <1>;
        #size-cells = <0>;

        i2c@7 {
          reg = <7>;
          #address-cells = <1>;
          #size-cells = <0>;
          gpio@20 {
            compatible = "nxp,pca9555";
            gpio-controller;
            #gpio-cells = <2>;
            reg = <0x20>;
          };
        };
      };
    };