xref: /openbmc/linux/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml (revision c900529f3d9161bfde5cca0754f83b4d3c3e0220)

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

title: Rockchip 10/100/1000 Ethernet driver(GMAC)

maintainers:
  - David Wu <david.wu@rock-chips.com>

# We need a select here so we don't match all nodes with 'snps,dwmac'
select:
  properties:
    compatible:
      contains:
        enum:
          - rockchip,px30-gmac
          - rockchip,rk3128-gmac
          - rockchip,rk3228-gmac
          - rockchip,rk3288-gmac
          - rockchip,rk3308-gmac
          - rockchip,rk3328-gmac
          - rockchip,rk3366-gmac
          - rockchip,rk3368-gmac
          - rockchip,rk3399-gmac
          - rockchip,rk3568-gmac
          - rockchip,rk3588-gmac
          - rockchip,rv1108-gmac
          - rockchip,rv1126-gmac
  required:
    - compatible

allOf:
  - $ref: snps,dwmac.yaml#

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - rockchip,px30-gmac
              - rockchip,rk3128-gmac
              - rockchip,rk3228-gmac
              - rockchip,rk3288-gmac
              - rockchip,rk3308-gmac
              - rockchip,rk3328-gmac
              - rockchip,rk3366-gmac
              - rockchip,rk3368-gmac
              - rockchip,rk3399-gmac
              - rockchip,rv1108-gmac
      - items:
          - enum:
              - rockchip,rk3568-gmac
              - rockchip,rk3588-gmac
              - rockchip,rv1126-gmac
          - const: snps,dwmac-4.20a

  clocks:
    minItems: 5
    maxItems: 8

  clock-names:
    contains:
      enum:
        - stmmaceth
        - mac_clk_tx
        - mac_clk_rx
        - aclk_mac
        - pclk_mac
        - clk_mac_ref
        - clk_mac_refout
        - clk_mac_speed

  clock_in_out:
    description:
      For RGMII, it must be "input", means main clock(125MHz)
      is not sourced from SoC's PLL, but input from PHY.
      For RMII, "input" means PHY provides the reference clock(50MHz),
      "output" means GMAC provides the reference clock.
    $ref: /schemas/types.yaml#/definitions/string
    enum: [input, output]
    default: input

  rockchip,grf:
    description: The phandle of the syscon node for the general register file.
    $ref: /schemas/types.yaml#/definitions/phandle

  rockchip,php-grf:
    description:
      The phandle of the syscon node for the peripheral general register file.
    $ref: /schemas/types.yaml#/definitions/phandle

  tx_delay:
    description: Delay value for TXD timing.
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 0x7F
    default: 0x30

  rx_delay:
    description: Delay value for RXD timing.
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 0x7F
    default: 0x10

  phy-supply:
    description: PHY regulator

required:
  - compatible
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/rk3288-cru.h>

    gmac: ethernet@ff290000 {
        compatible = "rockchip,rk3288-gmac";
        reg = <0xff290000 0x10000>;
        interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "macirq";
        clocks = <&cru SCLK_MAC>,
                 <&cru SCLK_MAC_RX>, <&cru SCLK_MAC_TX>,
                 <&cru SCLK_MACREF>, <&cru SCLK_MACREF_OUT>,
                 <&cru ACLK_GMAC>, <&cru PCLK_GMAC>;
        clock-names = "stmmaceth",
                      "mac_clk_rx", "mac_clk_tx",
                      "clk_mac_ref", "clk_mac_refout",
                      "aclk_mac", "pclk_mac";
        assigned-clocks = <&cru SCLK_MAC>;
        assigned-clock-parents = <&ext_gmac>;

        rockchip,grf = <&grf>;
        phy-mode = "rgmii";
        clock_in_out = "input";
        tx_delay = <0x30>;
        rx_delay = <0x10>;
    };