Bindings/net/dsa/microchip,ksz.yaml

# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/dsa/microchip,ksz.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Microchip KSZ Series Ethernet switches

maintainers:
  - Marek Vasut <marex@denx.de>
  - Woojung Huh <Woojung.Huh@microchip.com>

allOf:
  - $ref: dsa.yaml#/$defs/ethernet-ports
  - $ref: /schemas/spi/spi-peripheral-props.yaml#

properties:
  # See Documentation/devicetree/bindings/net/dsa/dsa.yaml for a list of additional
  # required and optional properties.
  compatible:
    enum:
      - microchip,ksz8765
      - microchip,ksz8794
      - microchip,ksz8795
      - microchip,ksz8863
      - microchip,ksz8873
      - microchip,ksz9477
      - microchip,ksz9897
      - microchip,ksz9896
      - microchip,ksz9567
      - microchip,ksz8565
      - microchip,ksz9893
      - microchip,ksz9563
      - microchip,ksz8563

  reset-gpios:
    description:
      Should be a gpio specifier for a reset line.
    maxItems: 1

  wakeup-source: true

  microchip,synclko-125:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Set if the output SYNCLKO frequency should be set to 125MHz instead of 25MHz.

  microchip,synclko-disable:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Set if the output SYNCLKO clock should be disabled. Do not mix with
      microchip,synclko-125.

  microchip,io-drive-strength-microamp:
    description:
      IO Pad Drive Strength
    enum: [8000, 16000]
    default: 16000

  microchip,hi-drive-strength-microamp:
    description:
      High Speed Drive Strength. Controls drive strength of GMII / RGMII /
      MII / RMII (except TX_CLK/REFCLKI, COL and CRS) and CLKO_25_125 lines.
    enum: [2000, 4000, 8000, 12000, 16000, 20000, 24000, 28000]
    default: 24000

  microchip,lo-drive-strength-microamp:
    description:
      Low Speed Drive Strength. Controls drive strength of TX_CLK / REFCLKI,
      COL, CRS, LEDs, PME_N, NTRP_N, SDO and SDI/SDA/MDIO lines.
    enum: [2000, 4000, 8000, 12000, 16000, 20000, 24000, 28000]
    default: 8000

  interrupts:
    maxItems: 1

required:
  - compatible
  - reg

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>

    // Ethernet switch connected via SPI to the host, CPU port wired to eth0:
    eth0 {
        fixed-link {
            speed = <1000>;
            full-duplex;
        };
    };

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

        pinctrl-0 = <&pinctrl_spi_ksz>;
        cs-gpios = <&pioC 25 0>;
        id = <1>;

        ksz9477: switch@0 {
            compatible = "microchip,ksz9477";
            reg = <0>;
            reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;

            spi-max-frequency = <44000000>;

            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 = "lan5";
                };
                port@5 {
                    reg = <5>;
                    ethernet = <&eth0>;
                    phy-mode = "rgmii";

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

        ksz8565: switch@1 {
            compatible = "microchip,ksz8565";
            reg = <1>;

            spi-max-frequency = <44000000>;

            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@6 {
                    reg = <6>;
                    ethernet = <&eth0>;
                    phy-mode = "rgmii";

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