Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/allwinner,sun8i-a83t-emac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A83t EMAC Device Tree Bindings

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Maxime Ripard <mripard@kernel.org>

properties:
  compatible:
    oneOf:
      - const: allwinner,sun8i-a83t-emac
      - const: allwinner,sun8i-h3-emac
      - const: allwinner,sun8i-r40-emac
      - const: allwinner,sun8i-v3s-emac
      - const: allwinner,sun50i-a64-emac
      - items:
          - const: allwinner,sun50i-h6-emac
          - const: allwinner,sun50i-a64-emac

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  interrupt-names:
    const: macirq

  clocks:
    maxItems: 1

  clock-names:
    const: stmmaceth

  syscon:
    $ref: /schemas/types.yaml#definitions/phandle
    description:
      Phandle to the device containing the EMAC or GMAC clock
      register

required:
  - compatible
  - reg
  - interrupts
  - interrupt-names
  - clocks
  - clock-names
  - resets
  - reset-names
  - phy-handle
  - phy-mode
  - syscon

allOf:
  - $ref: "snps,dwmac.yaml#"
  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun8i-a83t-emac
              - allwinner,sun8i-h3-emac
              - allwinner,sun8i-v3s-emac
              - allwinner,sun50i-a64-emac

    then:
      properties:
        allwinner,tx-delay-ps:
          default: 0
          minimum: 0
          maximum: 700
          multipleOf: 100
          description:
            External RGMII PHY TX clock delay chain value in ps.

        allwinner,rx-delay-ps:
          default: 0
          minimum: 0
          maximum: 3100
          multipleOf: 100
          description:
            External RGMII PHY TX clock delay chain value in ps.

  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun8i-r40-emac

    then:
      properties:
        allwinner,rx-delay-ps:
          default: 0
          minimum: 0
          maximum: 700
          multipleOf: 100
          description:
            External RGMII PHY TX clock delay chain value in ps.

  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun8i-h3-emac
              - allwinner,sun8i-v3s-emac

    then:
      properties:
        allwinner,leds-active-low:
          $ref: /schemas/types.yaml#definitions/flag
          description:
            EPHY LEDs are active low.

        mdio-mux:
          type: object

          properties:
            compatible:
              const: allwinner,sun8i-h3-mdio-mux

            mdio-parent-bus:
              $ref: /schemas/types.yaml#definitions/phandle
              description:
                Phandle to EMAC MDIO.

            mdio@1:
              type: object
              description: Internal MDIO Bus

              properties:
                "#address-cells":
                  const: 1

                "#size-cells":
                  const: 0

                compatible:
                  const: allwinner,sun8i-h3-mdio-internal

                reg:
                  const: 1

              patternProperties:
                "^ethernet-phy@[0-9a-f]$":
                  type: object
                  description:
                    Integrated PHY node

                  properties:
                    clocks:
                      maxItems: 1

                    resets:
                      maxItems: 1

                  required:
                    - clocks
                    - resets


            mdio@2:
              type: object
              description: External MDIO Bus (H3 only)

              properties:
                "#address-cells":
                  const: 1

                "#size-cells":
                  const: 0

                reg:
                  const: 2

          required:
            - compatible
            - mdio-parent-bus
            - mdio@1

unevaluatedProperties: false

examples:
  - |
    ethernet@1c0b000 {
        compatible = "allwinner,sun8i-h3-emac";
        syscon = <&syscon>;
        reg = <0x01c0b000 0x104>;
        interrupts = <0 82 1>;
        interrupt-names = "macirq";
        resets = <&ccu 12>;
        reset-names = "stmmaceth";
        clocks = <&ccu 27>;
        clock-names = "stmmaceth";

        phy-handle = <&int_mii_phy>;
        phy-mode = "mii";
        allwinner,leds-active-low;

        mdio1: mdio {
            #address-cells = <1>;
            #size-cells = <0>;
            compatible = "snps,dwmac-mdio";
        };

        mdio-mux {
            compatible = "allwinner,sun8i-h3-mdio-mux";
            #address-cells = <1>;
            #size-cells = <0>;

            mdio-parent-bus = <&mdio1>;

            int_mii_phy: mdio@1 {
                compatible = "allwinner,sun8i-h3-mdio-internal";
                reg = <1>;
                #address-cells = <1>;
                #size-cells = <0>;

                ethernet-phy@1 {
                    reg = <1>;
                    clocks = <&ccu 67>;
                    resets = <&ccu 39>;
                    phy-is-integrated;
                };
            };

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

  - |
    ethernet@1c0b000 {
        compatible = "allwinner,sun8i-h3-emac";
        syscon = <&syscon>;
        reg = <0x01c0b000 0x104>;
        interrupts = <0 82 1>;
        interrupt-names = "macirq";
        resets = <&ccu 12>;
        reset-names = "stmmaceth";
        clocks = <&ccu 27>;
        clock-names = "stmmaceth";

        phy-handle = <&ext_rgmii_phy>;
        phy-mode = "rgmii";
        allwinner,leds-active-low;

        mdio2: mdio {
            #address-cells = <1>;
            #size-cells = <0>;
            compatible = "snps,dwmac-mdio";
        };

        mdio-mux {
            compatible = "allwinner,sun8i-h3-mdio-mux";
            #address-cells = <1>;
            #size-cells = <0>;
            mdio-parent-bus = <&mdio2>;

            mdio@1 {
                compatible = "allwinner,sun8i-h3-mdio-internal";
                reg = <1>;
                #address-cells = <1>;
                #size-cells = <0>;

                ethernet-phy@1 {
                    reg = <1>;
                    clocks = <&ccu 67>;
                    resets = <&ccu 39>;
                };
            };

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

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

  - |
    ethernet@1c0b000 {
        compatible = "allwinner,sun8i-a83t-emac";
        syscon = <&syscon>;
        reg = <0x01c0b000 0x104>;
        interrupts = <0 82 1>;
        interrupt-names = "macirq";
        resets = <&ccu 13>;
        reset-names = "stmmaceth";
        clocks = <&ccu 27>;
        clock-names = "stmmaceth";
        phy-handle = <&ext_rgmii_phy1>;
        phy-mode = "rgmii";

        mdio {
            compatible = "snps,dwmac-mdio";
            #address-cells = <1>;
            #size-cells = <0>;

            ext_rgmii_phy1: ethernet-phy@1 {
                reg = <1>;
            };
        };
    };

...