xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/phy/mscc,vsc7514-serdes.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/mscc,vsc7514-serdes.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Microsemi Ocelot SerDes muxing

maintainers:
  - Alexandre Belloni <alexandre.belloni@bootlin.com>
  - UNGLinuxDriver@microchip.com

description: |
  On Microsemi Ocelot, there is a handful of registers in HSIO address
  space for setting up the SerDes to switch port muxing.

  A SerDes X can be "muxed" to work with switch port Y or Z for example.
  One specific SerDes can also be used as a PCIe interface.

  Hence, a SerDes represents an interface, be it an Ethernet or a PCIe one.

  There are two kinds of SerDes: SERDES1G supports 10/100Mbps in
  half/full-duplex and 1000Mbps in full-duplex mode while SERDES6G supports
  10/100Mbps in half/full-duplex and 1000/2500Mbps in full-duplex mode.

  Also, SERDES6G number (aka "macro") 0 is the only interface supporting
  QSGMII.

  This is a child of the HSIO syscon ("mscc,ocelot-hsio", see
  Documentation/devicetree/bindings/mips/mscc.txt) on the Microsemi Ocelot.

properties:
  compatible:
    enum:
      - mscc,vsc7514-serdes

  "#phy-cells":
    const: 2
    description: |
      The first number defines the input port to use for a given SerDes macro.
      The second defines the macro to use. They are defined in
      dt-bindings/phy/phy-ocelot-serdes.h

required:
  - compatible
  - "#phy-cells"

additionalProperties:
  false

examples:
  - |
    serdes: serdes {
      compatible = "mscc,vsc7514-serdes";
      #phy-cells = <2>;
    };