linux-stable/Documentation/devicetree/bindings/net/ti,cpsw-switch.yaml

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

title: TI SoC Ethernet Switch Controller (CPSW) Device Tree Bindings

maintainers:
  - Grygorii Strashko <grygorii.strashko@ti.com>
  - Sekhar Nori <nsekhar@ti.com>

description:
  The 3-port switch gigabit ethernet subsystem provides ethernet packet
  communication and can be configured as an ethernet switch. It provides the
  gigabit media independent interface (GMII),reduced gigabit media
  independent interface (RGMII), reduced media independent interface (RMII),
  the management data input output (MDIO) for physical layer device (PHY)
  management.

properties:
  compatible:
    oneOf:
      - const: ti,cpsw-switch
      - items:
          - const: ti,am335x-cpsw-switch
          - const: ti,cpsw-switch
      - items:
          - const: ti,am4372-cpsw-switch
          - const: ti,cpsw-switch
      - items:
          - const: ti,dra7-cpsw-switch
          - const: ti,cpsw-switch

  reg:
    maxItems: 1
    description:
       The physical base address and size of full the CPSW module IO range

  '#address-cells':
    const: 1

  '#size-cells':
    const: 1

  ranges: true

  clocks:
    maxItems: 1
    description: CPSW functional clock

  clock-names:
    items:
      - const: fck

  interrupts:
    items:
      - description: RX_THRESH interrupt
      - description: RX interrupt
      - description: TX interrupt
      - description: MISC interrupt

  interrupt-names:
    items:
      - const: "rx_thresh"
      - const: "rx"
      - const: "tx"
      - const: "misc"

  pinctrl-names: true

  syscon:
    $ref: /schemas/types.yaml#definitions/phandle
    description:
      Phandle to the system control device node which provides access to
      efuse IO range with MAC addresses

  ethernet-ports:
    type: object
    properties:
      '#address-cells':
        const: 1
      '#size-cells':
        const: 0

    patternProperties:
      "^port@[0-9]+$":
          type: object
          description: CPSW external ports

          allOf:
            - $ref: ethernet-controller.yaml#

          properties:
            reg:
              items:
                - enum: [1, 2]
              description: CPSW port number

            phys:
              maxItems: 1
              description:  phandle on phy-gmii-sel PHY

            label:
              description: label associated with this port

            ti,dual-emac-pvid:
              allOf:
                - $ref: /schemas/types.yaml#/definitions/uint32
              minimum: 1
              maximum: 1024
              description:
                Specifies default PORT VID to be used to segregate
                ports. Default value - CPSW port number.

          required:
            - reg
            - phys

  cpts:
    type: object
    description:
      The Common Platform Time Sync (CPTS) module

    properties:
      clocks:
        maxItems: 1
        description: CPTS reference clock

      clock-names:
        items:
          - const: cpts

      cpts_clock_mult:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Numerator to convert input clock ticks into ns

      cpts_clock_shift:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Denominator to convert input clock ticks into ns.
          Mult and shift will be calculated basing on CPTS rftclk frequency if
          both cpts_clock_shift and cpts_clock_mult properties are not provided.

    required:
      - clocks
      - clock-names

patternProperties:
  "^mdio@":
    type: object
    allOf:
      - $ref: "ti,davinci-mdio.yaml#"
    description:
      CPSW MDIO bus.


required:
  - compatible
  - reg
  - ranges
  - clocks
  - clock-names
  - interrupts
  - interrupt-names
  - '#address-cells'
  - '#size-cells'

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/dra7.h>

    mac_sw: switch@0 {
        compatible = "ti,dra7-cpsw-switch","ti,cpsw-switch";
        reg = <0x0 0x4000>;
        ranges = <0 0 0x4000>;
        clocks = <&gmac_main_clk>;
        clock-names = "fck";
        #address-cells = <1>;
        #size-cells = <1>;
        syscon = <&scm_conf>;

        interrupts = <GIC_SPI 334 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 335 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 336 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 337 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "rx_thresh", "rx", "tx", "misc";

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

                cpsw_port1: port@1 {
                        reg = <1>;
                        label = "port1";
                        mac-address = [ 00 00 00 00 00 00 ];
                        phys = <&phy_gmii_sel 1>;
                        phy-handle = <&ethphy0_sw>;
                        phy-mode = "rgmii";
                        ti,dual-emac-pvid = <1>;
                };

                cpsw_port2: port@2 {
                        reg = <2>;
                        label = "wan";
                        mac-address = [ 00 00 00 00 00 00 ];
                        phys = <&phy_gmii_sel 2>;
                        phy-handle = <&ethphy1_sw>;
                        phy-mode = "rgmii";
                        ti,dual-emac-pvid = <2>;
                };
        };

        davinci_mdio_sw: mdio@1000 {
                compatible = "ti,cpsw-mdio","ti,davinci_mdio";
                reg = <0x1000 0x100>;
                clocks = <&gmac_clkctrl DRA7_GMAC_GMAC_CLKCTRL 0>;
                clock-names = "fck";
                #address-cells = <1>;
                #size-cells = <0>;
                bus_freq = <1000000>;

                ethphy0_sw: ethernet-phy@0 {
                        reg = <0>;
                };

                ethphy1_sw: ethernet-phy@1 {
                        reg = <1>;
                };
        };

        cpts {
                clocks = <&gmac_clkctrl DRA7_GMAC_GMAC_CLKCTRL 25>;
                clock-names = "cpts";
        };
    };