xref: /openbmc/linux/Documentation/devicetree/bindings/net/rockchip,emac.yaml (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/rockchip,emac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Rockchip RK3036/RK3066/RK3188 Ethernet Media Access Controller (EMAC)

maintainers:
  - Heiko Stuebner <heiko@sntech.de>

properties:
  compatible:
    enum:
      - rockchip,rk3036-emac
      - rockchip,rk3066-emac
      - rockchip,rk3188-emac

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 2
    items:
      - description: host clock
      - description: reference clock
      - description: mac TX/RX clock

  clock-names:
    minItems: 2
    items:
      - const: hclk
      - const: macref
      - const: macclk

  rockchip,grf:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle to the syscon GRF used to control speed and mode for the EMAC.

  phy-supply:
    description:
      Phandle to a regulator if the PHY needs one.

  mdio:
    $ref: mdio.yaml#
    unevaluatedProperties: false

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - rockchip,grf
  - phy
  - phy-mode
  - mdio

allOf:
  - $ref: ethernet-controller.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: rockchip,rk3036-emac

    then:
      properties:
        clocks:
          minItems: 3

        clock-names:
          minItems: 3

    else:
      properties:
        clocks:
          maxItems: 2

        clock-names:
          maxItems: 2

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/rk3188-cru-common.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    ethernet@10204000 {
      compatible = "rockchip,rk3188-emac";
      reg = <0xc0fc2000 0x3c>;
      interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
      clocks = <&cru HCLK_EMAC>, <&cru SCLK_MAC>;
      clock-names = "hclk", "macref";
      rockchip,grf = <&grf>;
      pinctrl-0 = <&emac_xfer>, <&emac_mdio>, <&phy_int>;
      pinctrl-names = "default";
      phy = <&phy0>;
      phy-mode = "rmii";
      phy-supply = <&vcc_rmii>;

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

        phy0: ethernet-phy@0 {
          reg = <1>;
        };
      };
    };