kernel/Documentation/devicetree/bindings/net/fsl,fec.yaml

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

title: Freescale Fast Ethernet Controller (FEC)

maintainers:
  - Joakim Zhang <qiangqing.zhang@nxp.com>

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

properties:
  compatible:
    oneOf:
      - enum:
          - fsl,imx25-fec
          - fsl,imx27-fec
          - fsl,imx28-fec
          - fsl,imx6q-fec
          - fsl,mvf600-fec
      - items:
          - enum:
              - fsl,imx53-fec
              - fsl,imx6sl-fec
          - const: fsl,imx25-fec
      - items:
          - enum:
              - fsl,imx35-fec
              - fsl,imx51-fec
          - const: fsl,imx27-fec
      - items:
          - enum:
              - fsl,imx6ul-fec
              - fsl,imx6sx-fec
          - const: fsl,imx6q-fec
      - items:
          - enum:
              - fsl,imx7d-fec
          - const: fsl,imx6sx-fec
      - items:
          - const: fsl,imx8mq-fec
          - const: fsl,imx6sx-fec
      - items:
          - enum:
              - fsl,imx8mm-fec
              - fsl,imx8mn-fec
              - fsl,imx8mp-fec
          - const: fsl,imx8mq-fec
          - const: fsl,imx6sx-fec
      - items:
          - const: fsl,imx8qm-fec
          - const: fsl,imx6sx-fec
      - items:
          - enum:
              - fsl,imx8qxp-fec
          - const: fsl,imx8qm-fec
          - const: fsl,imx6sx-fec

  reg:
    maxItems: 1

  interrupts:
    minItems: 1
    maxItems: 4

  interrupt-names:
    oneOf:
      - items:
          - const: int0
      - items:
          - const: int0
          - const: pps
      - items:
          - const: int0
          - const: int1
          - const: int2
      - items:
          - const: int0
          - const: int1
          - const: int2
          - const: pps

  clocks:
    minItems: 2
    maxItems: 5
    description:
      The "ipg", for MAC ipg_clk_s, ipg_clk_mac_s that are for register accessing.
      The "ahb", for MAC ipg_clk, ipg_clk_mac that are bus clock.
      The "ptp"(option), for IEEE1588 timer clock that requires the clock.
      The "enet_clk_ref"(option), for MAC transmit/receiver reference clock like
      RGMII TXC clock or RMII reference clock. It depends on board design,
      the clock is required if RGMII TXC and RMII reference clock source from
      SOC internal PLL.
      The "enet_out"(option), output clock for external device, like supply clock
      for PHY. The clock is required if PHY clock source from SOC.
      The "enet_2x_txclk"(option), for RGMII sampling clock which fixed at 250Mhz.
      The clock is required if SoC RGMII enable clock delay.

  clock-names:
    minItems: 2
    maxItems: 5
    items:
      enum:
        - ipg
        - ahb
        - ptp
        - enet_clk_ref
        - enet_out
        - enet_2x_txclk

  phy-mode: true

  phy-handle: true

  fixed-link: true

  local-mac-address: true

  mac-address: true

  tx-internal-delay-ps:
    enum: [0, 2000]

  rx-internal-delay-ps:
    enum: [0, 2000]

  phy-supply:
    description:
      Regulator that powers the Ethernet PHY.

  fsl,num-tx-queues:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The property is valid for enet-avb IP, which supports hw multi queues.
      Should specify the tx queue number, otherwise set tx queue number to 1.
    enum: [1, 2, 3]

  fsl,num-rx-queues:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The property is valid for enet-avb IP, which supports hw multi queues.
      Should specify the rx queue number, otherwise set rx queue number to 1.
    enum: [1, 2, 3]

  fsl,magic-packet:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If present, indicates that the hardware supports waking up via magic packet.

  fsl,err006687-workaround-present:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      If present indicates that the system has the hardware workaround for
      ERR006687 applied and does not need a software workaround.

  fsl,stop-mode:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    description:
      Register bits of stop mode control, the format is <&gpr req_gpr req_bit>.
      gpr is the phandle to general purpose register node.
      req_gpr is the gpr register offset for ENET stop request.
      req_bit is the gpr bit offset for ENET stop request.

  mdio:
    type: object
    description:
      Specifies the mdio bus in the FEC, used as a container for phy nodes.

  # Deprecated optional properties:
  # To avoid these, create a phy node according to ethernet-phy.yaml in the same
  # directory, and point the FEC's "phy-handle" property to it. Then use
  # the phy's reset binding, again described by ethernet-phy.yaml.

  phy-reset-gpios:
    deprecated: true
    description:
      Should specify the gpio for phy reset.

  phy-reset-duration:
    deprecated: true
    description:
      Reset duration in milliseconds.  Should present only if property
      "phy-reset-gpios" is available.  Missing the property will have the
      duration be 1 millisecond.  Numbers greater than 1000 are invalid
      and 1 millisecond will be used instead.

  phy-reset-active-high:
    deprecated: true
    description:
      If present then the reset sequence using the GPIO specified in the
      "phy-reset-gpios" property is reversed (H=reset state, L=operation state).

  phy-reset-post-delay:
    deprecated: true
    description:
      Post reset delay in milliseconds. If present then a delay of phy-reset-post-delay
      milliseconds will be observed after the phy-reset-gpios has been toggled.
      Can be omitted thus no delay is observed. Delay is in range of 1ms to 1000ms.
      Other delays are invalid.

required:
  - compatible
  - reg
  - interrupts

# FIXME: We had better set additionalProperties to false to avoid invalid or at
# least undocumented properties. However, PHY may have a deprecated option to
# place PHY OF properties in the MAC node, such as Micrel PHY, and we can find
# these boards which is based on i.MX6QDL.
additionalProperties: false

examples:
  - |
    ethernet@83fec000 {
      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
      reg = <0x83fec000 0x4000>;
      interrupts = <87>;
      phy-mode = "mii";
      phy-reset-gpios = <&gpio2 14 0>;
      phy-supply = <&reg_fec_supply>;
    };

    ethernet@83fed000 {
      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
      reg = <0x83fed000 0x4000>;
      interrupts = <87>;
      phy-mode = "mii";
      phy-reset-gpios = <&gpio2 14 0>;
      phy-supply = <&reg_fec_supply>;
      phy-handle = <&ethphy0>;

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

        ethphy0: ethernet-phy@0 {
          compatible = "ethernet-phy-ieee802.3-c22";
          reg = <0>;
        };
      };
    };