# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/loongson,ls1c-emac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Loongson-1C Ethernet MAC Controller

maintainers:
  - Keguang Zhang <keguang.zhang@gmail.com>

description: |
  Loongson-1C Ethernet MAC Controller is based on
  Synopsys DesignWare MAC (version 3.50a).

  Main features
  - 10/100Mbps
  - Full-duplex operation (IEEE 802.3x flow control automatic transmission)
  - Half-duplex operation (CSMA/CD Protocol and back-pressure support)
  - IEEE 802.1Q VLAN tag detection for reception frames
  - MII interface
  - RMII interface

select:
  properties:
    compatible:
      contains:
        enum:
          - loongson,ls1c-emac
  required:
    - compatible

properties:
  compatible:
    items:
      - enum:
          - loongson,ls1c-emac
      - const: snps,dwmac-3.50a

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    items:
      - const: stmmaceth

  interrupts:
    maxItems: 1

  interrupt-names:
    items:
      - const: macirq

  loongson,ls1-syscon:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle to the syscon containing some extra configurations
      including PHY interface mode.

  phy-mode:
    enum:
      - mii
      - rmii

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - interrupts
  - interrupt-names
  - loongson,ls1-syscon

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

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/loongson,ls1x-clk.h>
    #include <dt-bindings/interrupt-controller/irq.h>

    emac: ethernet@1fe10000 {
        compatible = "loongson,ls1c-emac", "snps,dwmac-3.50a";
        reg = <0x1fe10000 0x10000>;

        clocks = <&clkc LS1X_CLKID_AHB>;
        clock-names = "stmmaceth";

        interrupt-parent = <&intc1>;
        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "macirq";

        loongson,ls1-syscon = <&syscon>;

        phy-handle = <&phy0>;
        phy-mode = "mii";
        snps,pbl = <1>;

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

            phy0: ethernet-phy@13 {
                reg = <0x13>;
            };
        };
    };
