xref: /linux/Documentation/devicetree/bindings/net/dsa/smsc,lan9303.yaml (revision b2128290c29902315e632ea59e0504d6bc9e9b42)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/dsa/smsc,lan9303.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: SMSC/MicroChip LAN9303 three port ethernet switch

maintainers:
  - Frank Li <Frank.Li@nxp.com>

description:
  The LAN9303 is a three port ethernet switch with integrated PHYs for the
  two external ports. The third port is an RMII/MII interface to a host
  processor. The device can be managed via I2C or MDIO.

  Note - always use 'reg = <0/1/2>;' for the three DSA ports, even if the
  device is configured to use 1/2/3 instead. This hardware configuration
  will be auto-detected and mapped accordingly.

properties:
  compatible:
    enum:
      - smsc,lan9303-i2c
      - smsc,lan9303-mdio

  reg:
    maxItems: 1

  reset-gpios:
    description:
      GPIO to be used to reset the whole device
    maxItems: 1

  reset-duration:
    description:
      Reset duration in milliseconds
    default: 200
    $ref: /schemas/types.yaml#/definitions/uint32

required:
  - compatible
  - reg

unevaluatedProperties: false

allOf:
  - $ref: dsa.yaml#

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

    /* I2C managed mode */
    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        switch@a {
            compatible = "smsc,lan9303-i2c";
            reg = <0xa>;
            reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
            reset-duration = <200>;

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

                port@0 {
                    reg = <0>;
                    label = "cpu";
                    ethernet = <&master>;
                };

                port@1 {
                    reg = <1>;
                    label = "lan1";
                };

                port@2 {
                    reg = <2>;
                    label = "lan2";
                };
            };
        };
    };

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

    /* MDIO managed mode */
    mdio {
        #address-cells = <1>;
        #size-cells = <0>;

        switch@0 {
            compatible = "smsc,lan9303-mdio";
            reg = <0>;
            reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
            reset-duration = <100>;

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

                port@0 {
                    reg = <0>;
                    label = "cpu";
                    ethernet = <&master>;
                };

                port@1 {
                    reg = <1>;
                    label = "lan1";
                };

                port@2 {
                    reg = <2>;
                    label = "lan2";
                };
            };
        };
    };