xref: /freebsd-src/sys/contrib/device-tree/Bindings/net/mdio-gpio.yaml (revision fac71e4e09885bb2afa3d984a0c239a52e1a7418)

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

title: MDIO on GPIOs

maintainers:
  - Andrew Lunn <andrew@lunn.ch>
  - Heiner Kallweit <hkallweit1@gmail.com>
  - Russell King <linux@armlinux.org.uk>

allOf:
  - $ref: mdio.yaml#

properties:
  compatible:
    enum:
      - virtual,mdio-gpio
      - microchip,mdio-smi0

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

  gpios:
    minItems: 2
    items:
      - description: MDC
      - description: MDIO
      - description: MDO

# Note: Each gpio-mdio bus should have an alias correctly numbered in "aliases"
# node.
additionalProperties:
  type: object

examples:
  - |
    aliases {
        mdio-gpio0 = &mdio0;
    };

    mdio0: mdio {
      compatible = "virtual,mdio-gpio";
      #address-cells = <1>;
      #size-cells = <0>;
      gpios = <&qe_pio_a 11>,
              <&qe_pio_c 6>;
      ethphy0: ethernet-phy@0 {
        reg = <0>;
      };
    };
...