linuxdebug/Documentation/devicetree/bindings/net/ethernet-phy.yaml

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/ethernet-phy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Ethernet PHY Generic Binding

maintainers:
  - Andrew Lunn <andrew@lunn.ch>
  - Florian Fainelli <f.fainelli@gmail.com>
  - Heiner Kallweit <hkallweit1@gmail.com>

# The dt-schema tools will generate a select statement first by using
# the compatible, and second by using the node name if any. In our
# case, the node name is the one we want to match on, while the
# compatible is optional.
select:
  properties:
    $nodename:
      pattern: "^ethernet-phy(@[a-f0-9]+)?$"

  required:
    - $nodename

properties:
  $nodename:
    pattern: "^ethernet-phy(@[a-f0-9]+)?$"

  compatible:
    oneOf:
      - const: ethernet-phy-ieee802.3-c22
        description: PHYs that implement IEEE802.3 clause 22
      - const: ethernet-phy-ieee802.3-c45
        description: PHYs that implement IEEE802.3 clause 45
      - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
        description:
          If the PHY reports an incorrect ID (or none at all) then the
          compatible list may contain an entry with the correct PHY ID
          in the above form.
          The first group of digits is the 16 bit Phy Identifier 1
          register, this is the chip vendor OUI bits 3:18. The
          second group of digits is the Phy Identifier 2 register,
          this is the chip vendor OUI bits 19:24, followed by 10
          bits of a vendor specific ID.
      - items:
          - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
          - const: ethernet-phy-ieee802.3-c22
      - items:
          - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
          - const: ethernet-phy-ieee802.3-c45

  reg:
    minimum: 0
    maximum: 31
    description:
      The ID number for the PHY.

  interrupts:
    maxItems: 1

  max-speed:
    enum:
      - 10
      - 100
      - 1000
      - 2500
      - 5000
      - 10000
      - 20000
      - 25000
      - 40000
      - 50000
      - 56000
      - 100000
      - 200000
    description:
      Maximum PHY supported speed in Mbits / seconds.

  phy-10base-t1l-2.4vpp:
    description: |
      tristate, request/disable 2.4 Vpp operating mode. The values are:
      0: Disable 2.4 Vpp operating mode.
      1: Request 2.4 Vpp operating mode from link partner.
      Absence of this property will leave configuration to default values.
    $ref: "/schemas/types.yaml#/definitions/uint32"
    enum: [0, 1]

  broken-turn-around:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If set, indicates the PHY device does not correctly release
      the turn around line low at end of the control phase of the
      MDIO transaction.

  enet-phy-lane-swap:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If set, indicates the PHY will swap the TX/RX lanes to
      compensate for the board being designed with the lanes
      swapped.

  enet-phy-lane-no-swap:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If set, indicates that PHY will disable swap of the
      TX/RX lanes. This property allows the PHY to work correcly after
      e.g. wrong bootstrap configuration caused by issues in PCB
      layout design.

  eee-broken-100tx:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  eee-broken-1000t:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  eee-broken-10gt:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  eee-broken-1000kx:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  eee-broken-10gkx4:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  eee-broken-10gkr:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Mark the corresponding energy efficient ethernet mode as
      broken and request the ethernet to stop advertising it.

  pses:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    maxItems: 1
    description:
      Specifies a reference to a node representing a Power Sourcing Equipment.

  phy-is-integrated:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If set, indicates that the PHY is integrated into the same
      physical package as the Ethernet MAC. If needed, muxers
      should be configured to ensure the integrated PHY is
      used. The absence of this property indicates the muxers
      should be configured so that the external PHY is used.

  resets:
    maxItems: 1

  reset-names:
    const: phy

  reset-gpios:
    maxItems: 1
    description:
      The GPIO phandle and specifier for the PHY reset signal.

  reset-assert-us:
    description:
      Delay after the reset was asserted in microseconds. If this
      property is missing the delay will be skipped.

  reset-deassert-us:
    description:
      Delay after the reset was deasserted in microseconds. If
      this property is missing the delay will be skipped.

  sfp:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Specifies a reference to a node representing a SFP cage.

  rx-internal-delay-ps:
    description: |
      RGMII Receive PHY Clock Delay defined in pico seconds.  This is used for
      PHY's that have configurable RX internal delays.  If this property is
      present then the PHY applies the RX delay.

  tx-internal-delay-ps:
    description: |
      RGMII Transmit PHY Clock Delay defined in pico seconds.  This is used for
      PHY's that have configurable TX internal delays. If this property is
      present then the PHY applies the TX delay.

required:
  - reg

additionalProperties: true

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

        ethernet-phy@0 {
            compatible = "ethernet-phy-id0141.0e90", "ethernet-phy-ieee802.3-c45";
            interrupt-parent = <&PIC>;
            interrupts = <35 1>;
            reg = <0>;

            resets = <&rst 8>;
            reset-names = "phy";
            reset-gpios = <&gpio1 4 1>;
            reset-assert-us = <1000>;
            reset-deassert-us = <2000>;
        };
    };