# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/dsa/mediatek,mt7530.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Mediatek MT7530 and MT7531 Ethernet Switches

maintainers:
  - Arınç ÜNAL <arinc.unal@arinc9.com>
  - Landen Chao <Landen.Chao@mediatek.com>
  - DENG Qingfang <dqfext@gmail.com>
  - Sean Wang <sean.wang@mediatek.com>

description: |
  There are two versions of MT7530, standalone and in a multi-chip module.

  MT7530 is a part of the multi-chip module in MT7620AN, MT7620DA, MT7620DAN,
  MT7620NN, MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs.

  MT7530 in MT7620AN, MT7620DA, MT7620DAN and MT7620NN SoCs has got 10/100 PHYs
  and the switch registers are directly mapped into SoC's memory map rather than
  using MDIO. The DSA driver currently doesn't support this.

  There is only the standalone version of MT7531.

  Port 5 on MT7530 has got various ways of configuration.

  For standalone MT7530:

    - Port 5 can be used as a CPU port.

    - PHY 0 or 4 of the switch can be muxed to connect to the gmac of the SoC
      which port 5 is wired to. Usually used for connecting the wan port
      directly to the CPU to achieve 2 Gbps routing in total.

      The driver looks up the reg on the ethernet-phy node which the phy-handle
      property refers to on the gmac node to mux the specified phy.

      The driver requires the gmac of the SoC to have "mediatek,eth-mac" as the
      compatible string and the reg must be 1. So, for now, only gmac1 of an
      MediaTek SoC can benefit this. Banana Pi BPI-R2 suits this.
      Check out example 5 for a similar configuration.

    - Port 5 can be wired to an external phy. Port 5 becomes a DSA slave.
      Check out example 7 for a similar configuration.

  For multi-chip module MT7530:

    - Port 5 can be used as a CPU port.

    - PHY 0 or 4 of the switch can be muxed to connect to gmac1 of the SoC.
      Usually used for connecting the wan port directly to the CPU to achieve 2
      Gbps routing in total.

      The driver looks up the reg on the ethernet-phy node which the phy-handle
      property refers to on the gmac node to mux the specified phy.

      For the MT7621 SoCs, rgmii2 group must be claimed with rgmii2 function.
      Check out example 5.

    - In case of an external phy wired to gmac1 of the SoC, port 5 must not be
      enabled.

      In case of muxing PHY 0 or 4, the external phy must not be enabled.

      For the MT7621 SoCs, rgmii2 group must be claimed with rgmii2 function.
      Check out example 6.

    - Port 5 can be muxed to an external phy. Port 5 becomes a DSA slave.
      The external phy must be wired TX to TX to gmac1 of the SoC for this to
      work. Ubiquiti EdgeRouter X SFP is wired this way.

      Muxing PHY 0 or 4 won't work when the external phy is connected TX to TX.

      For the MT7621 SoCs, rgmii2 group must be claimed with gpio function.
      Check out example 7.

properties:
  compatible:
    oneOf:
      - description:
          Standalone MT7530 and multi-chip module MT7530 in MT7623AI SoC
        const: mediatek,mt7530

      - description:
          Standalone MT7531
        const: mediatek,mt7531

      - description:
          Multi-chip module MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs
        const: mediatek,mt7621

  reg:
    maxItems: 1

  core-supply:
    description:
      Phandle to the regulator node necessary for the core power.

  "#gpio-cells":
    const: 2

  gpio-controller:
    type: boolean
    description:
      If defined, LED controller of the MT7530 switch will run on GPIO mode.

      There are 15 controllable pins.
      port 0 LED 0..2 as GPIO 0..2
      port 1 LED 0..2 as GPIO 3..5
      port 2 LED 0..2 as GPIO 6..8
      port 3 LED 0..2 as GPIO 9..11
      port 4 LED 0..2 as GPIO 12..14

  "#interrupt-cells":
    const: 1

  interrupt-controller: true

  interrupts:
    maxItems: 1

  io-supply:
    description:
      Phandle to the regulator node necessary for the I/O power.
      See Documentation/devicetree/bindings/regulator/mt6323-regulator.txt for
      details for the regulator setup on these boards.

  mediatek,mcm:
    type: boolean
    description:
      Used for MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs which the MT7530
      switch is a part of the multi-chip module.

  reset-gpios:
    description:
      GPIO to reset the switch. Use this if mediatek,mcm is not used.
      This property is optional because some boards share the reset line with
      other components which makes it impossible to probe the switch if the
      reset line is used.
    maxItems: 1

  reset-names:
    const: mcm

  resets:
    description:
      Phandle pointing to the system reset controller with line index for the
      ethsys.
    maxItems: 1

patternProperties:
  "^(ethernet-)?ports$":
    type: object

    patternProperties:
      "^(ethernet-)?port@[0-9]+$":
        type: object
        description: Ethernet switch ports

        unevaluatedProperties: false

        properties:
          reg:
            description:
              Port address described must be 5 or 6 for CPU port and from 0 to 5
              for user ports.

        allOf:
          - $ref: dsa-port.yaml#
          - if:
              required: [ ethernet ]
            then:
              properties:
                reg:
                  enum:
                    - 5
                    - 6

required:
  - compatible
  - reg

$defs:
  mt7530-dsa-port:
    patternProperties:
      "^(ethernet-)?ports$":
        patternProperties:
          "^(ethernet-)?port@[0-9]+$":
            if:
              required: [ ethernet ]
            then:
              if:
                properties:
                  reg:
                    const: 5
              then:
                properties:
                  phy-mode:
                    enum:
                      - gmii
                      - mii
                      - rgmii
              else:
                properties:
                  phy-mode:
                    enum:
                      - rgmii
                      - trgmii

  mt7531-dsa-port:
    patternProperties:
      "^(ethernet-)?ports$":
        patternProperties:
          "^(ethernet-)?port@[0-9]+$":
            if:
              required: [ ethernet ]
            then:
              if:
                properties:
                  reg:
                    const: 5
              then:
                properties:
                  phy-mode:
                    enum:
                      - 1000base-x
                      - 2500base-x
                      - rgmii
                      - sgmii
              else:
                properties:
                  phy-mode:
                    enum:
                      - 1000base-x
                      - 2500base-x
                      - sgmii

allOf:
  - $ref: dsa.yaml#
  - if:
      required:
        - mediatek,mcm
    then:
      properties:
        reset-gpios: false

      required:
        - resets
        - reset-names

  - dependencies:
      interrupt-controller: [ interrupts ]

  - if:
      properties:
        compatible:
          const: mediatek,mt7530
    then:
      $ref: "#/$defs/mt7530-dsa-port"
      required:
        - core-supply
        - io-supply

  - if:
      properties:
        compatible:
          const: mediatek,mt7531
    then:
      $ref: "#/$defs/mt7531-dsa-port"
      properties:
        gpio-controller: false
        mediatek,mcm: false

  - if:
      properties:
        compatible:
          const: mediatek,mt7621
    then:
      $ref: "#/$defs/mt7530-dsa-port"
      required:
        - mediatek,mcm

unevaluatedProperties: false

examples:
  # Example 1: Standalone MT7530
  - |
    #include <dt-bindings/gpio/gpio.h>

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

        switch@1f {
            compatible = "mediatek,mt7530";
            reg = <0x1f>;

            reset-gpios = <&pio 33 0>;

            core-supply = <&mt6323_vpa_reg>;
            io-supply = <&mt6323_vemc3v3_reg>;

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

                port@0 {
                    reg = <0>;
                    label = "lan1";
                };

                port@1 {
                    reg = <1>;
                    label = "lan2";
                };

                port@2 {
                    reg = <2>;
                    label = "lan3";
                };

                port@3 {
                    reg = <3>;
                    label = "lan4";
                };

                port@4 {
                    reg = <4>;
                    label = "wan";
                };

                port@6 {
                    reg = <6>;
                    ethernet = <&gmac0>;
                    phy-mode = "rgmii";

                    fixed-link {
                        speed = <1000>;
                        full-duplex;
                        pause;
                    };
                };
            };
        };
    };

  # Example 2: MT7530 in MT7623AI SoC
  - |
    #include <dt-bindings/reset/mt2701-resets.h>

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

        switch@1f {
            compatible = "mediatek,mt7530";
            reg = <0x1f>;

            mediatek,mcm;
            resets = <&ethsys MT2701_ETHSYS_MCM_RST>;
            reset-names = "mcm";

            core-supply = <&mt6323_vpa_reg>;
            io-supply = <&mt6323_vemc3v3_reg>;

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

                port@0 {
                    reg = <0>;
                    label = "lan1";
                };

                port@1 {
                    reg = <1>;
                    label = "lan2";
                };

                port@2 {
                    reg = <2>;
                    label = "lan3";
                };

                port@3 {
                    reg = <3>;
                    label = "lan4";
                };

                port@4 {
                    reg = <4>;
                    label = "wan";
                };

                port@6 {
                    reg = <6>;
                    ethernet = <&gmac0>;
                    phy-mode = "trgmii";

                    fixed-link {
                        speed = <1000>;
                        full-duplex;
                        pause;
                    };
                };
            };
        };
    };

  # Example 3: Standalone MT7531
  - |
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interrupt-controller/irq.h>

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

        switch@0 {
            compatible = "mediatek,mt7531";
            reg = <0>;

            reset-gpios = <&pio 54 0>;

            interrupt-controller;
            #interrupt-cells = <1>;
            interrupt-parent = <&pio>;
            interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;

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

                port@0 {
                    reg = <0>;
                    label = "lan1";
                };

                port@1 {
                    reg = <1>;
                    label = "lan2";
                };

                port@2 {
                    reg = <2>;
                    label = "lan3";
                };

                port@3 {
                    reg = <3>;
                    label = "lan4";
                };

                port@4 {
                    reg = <4>;
                    label = "wan";
                };

                port@6 {
                    reg = <6>;
                    ethernet = <&gmac0>;
                    phy-mode = "2500base-x";

                    fixed-link {
                        speed = <2500>;
                        full-duplex;
                        pause;
                    };
                };
            };
        };
    };

  # Example 4: MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs
  - |
    #include <dt-bindings/interrupt-controller/mips-gic.h>
    #include <dt-bindings/reset/mt7621-reset.h>

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

        switch@1f {
            compatible = "mediatek,mt7621";
            reg = <0x1f>;

            mediatek,mcm;
            resets = <&sysc MT7621_RST_MCM>;
            reset-names = "mcm";

            interrupt-controller;
            #interrupt-cells = <1>;
            interrupt-parent = <&gic>;
            interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;

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

                port@0 {
                    reg = <0>;
                    label = "lan1";
                };

                port@1 {
                    reg = <1>;
                    label = "lan2";
                };

                port@2 {
                    reg = <2>;
                    label = "lan3";
                };

                port@3 {
                    reg = <3>;
                    label = "lan4";
                };

                port@4 {
                    reg = <4>;
                    label = "wan";
                };

                port@6 {
                    reg = <6>;
                    ethernet = <&gmac0>;
                    phy-mode = "trgmii";

                    fixed-link {
                        speed = <1000>;
                        full-duplex;
                        pause;
                    };
                };
            };
        };
    };

  # Example 5: MT7621: mux MT7530's phy4 to SoC's gmac1
  - |
    #include <dt-bindings/interrupt-controller/mips-gic.h>
    #include <dt-bindings/reset/mt7621-reset.h>

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

        pinctrl-names = "default";
        pinctrl-0 = <&rgmii2_pins>;

        mac@1 {
            compatible = "mediatek,eth-mac";
            reg = <1>;

            phy-mode = "rgmii";
            phy-handle = <&example5_ethphy4>;
        };

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

            /* MT7530's phy4 */
            example5_ethphy4: ethernet-phy@4 {
                reg = <4>;
            };

            switch@1f {
                compatible = "mediatek,mt7621";
                reg = <0x1f>;

                mediatek,mcm;
                resets = <&sysc MT7621_RST_MCM>;
                reset-names = "mcm";

                interrupt-controller;
                #interrupt-cells = <1>;
                interrupt-parent = <&gic>;
                interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;

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

                    port@0 {
                        reg = <0>;
                        label = "lan1";
                    };

                    port@1 {
                        reg = <1>;
                        label = "lan2";
                    };

                    port@2 {
                        reg = <2>;
                        label = "lan3";
                    };

                    port@3 {
                        reg = <3>;
                        label = "lan4";
                    };

                    /* Commented out, phy4 is muxed to gmac1.
                    port@4 {
                        reg = <4>;
                        label = "wan";
                    };
                    */

                    port@6 {
                        reg = <6>;
                        ethernet = <&gmac0>;
                        phy-mode = "trgmii";

                        fixed-link {
                            speed = <1000>;
                            full-duplex;
                            pause;
                        };
                    };
                };
            };
        };
    };

  # Example 6: MT7621: mux external phy to SoC's gmac1
  - |
    #include <dt-bindings/interrupt-controller/mips-gic.h>
    #include <dt-bindings/reset/mt7621-reset.h>

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

        pinctrl-names = "default";
        pinctrl-0 = <&rgmii2_pins>;

        mac@1 {
            compatible = "mediatek,eth-mac";
            reg = <1>;

            phy-mode = "rgmii";
            phy-handle = <&example6_ethphy7>;
        };

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

            /* External PHY */
            example6_ethphy7: ethernet-phy@7 {
                reg = <7>;
                phy-mode = "rgmii";
            };

            switch@1f {
                compatible = "mediatek,mt7621";
                reg = <0x1f>;

                mediatek,mcm;
                resets = <&sysc MT7621_RST_MCM>;
                reset-names = "mcm";

                interrupt-controller;
                #interrupt-cells = <1>;
                interrupt-parent = <&gic>;
                interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;

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

                    port@0 {
                        reg = <0>;
                        label = "lan1";
                    };

                    port@1 {
                        reg = <1>;
                        label = "lan2";
                    };

                    port@2 {
                        reg = <2>;
                        label = "lan3";
                    };

                    port@3 {
                        reg = <3>;
                        label = "lan4";
                    };

                    port@4 {
                        reg = <4>;
                        label = "wan";
                    };

                    port@6 {
                        reg = <6>;
                        ethernet = <&gmac0>;
                        phy-mode = "trgmii";

                        fixed-link {
                            speed = <1000>;
                            full-duplex;
                            pause;
                        };
                    };
                };
            };
        };
    };

  # Example 7: MT7621: mux external phy to MT7530's port 5
  - |
    #include <dt-bindings/interrupt-controller/mips-gic.h>
    #include <dt-bindings/reset/mt7621-reset.h>

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

        pinctrl-names = "default";
        pinctrl-0 = <&rgmii2_pins>;

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

            /* External PHY */
            example7_ethphy7: ethernet-phy@7 {
                reg = <7>;
                phy-mode = "rgmii";
            };

            switch@1f {
                compatible = "mediatek,mt7621";
                reg = <0x1f>;

                mediatek,mcm;
                resets = <&sysc MT7621_RST_MCM>;
                reset-names = "mcm";

                interrupt-controller;
                #interrupt-cells = <1>;
                interrupt-parent = <&gic>;
                interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;

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

                    port@0 {
                        reg = <0>;
                        label = "lan1";
                    };

                    port@1 {
                        reg = <1>;
                        label = "lan2";
                    };

                    port@2 {
                        reg = <2>;
                        label = "lan3";
                    };

                    port@3 {
                        reg = <3>;
                        label = "lan4";
                    };

                    port@4 {
                        reg = <4>;
                        label = "wan";
                    };

                    port@5 {
                        reg = <5>;
                        label = "extphy";
                        phy-mode = "rgmii-txid";
                        phy-handle = <&example7_ethphy7>;
                    };

                    port@6 {
                        reg = <6>;
                        ethernet = <&gmac0>;
                        phy-mode = "trgmii";

                        fixed-link {
                            speed = <1000>;
                            full-duplex;
                            pause;
                        };
                    };
                };
            };
        };
    };