Kernel-4.18.0-80.el8_micrel

Micrel PHY properties.

These properties cover the base properties Micrel PHYs.

Optional properties:

  • micrel,led-mode : LED mode value to set for PHYs with configurable LEDs.

    Configure the LED mode with single value. The list of PHYs and the
    bits that are currently supported:

    KSZ8001: register 0x1e, bits 15..14
    KSZ8041: register 0x1e, bits 15..14
    KSZ8021: register 0x1f, bits 5..4
    KSZ8031: register 0x1f, bits 5..4
    KSZ8051: register 0x1f, bits 5..4
    KSZ8081: register 0x1f, bits 5..4
    KSZ8091: register 0x1f, bits 5..4

    See the respective PHY datasheet for the mode values.

  • micrel,rmii-reference-clock-select-25-mhz: RMII Reference Clock Select

                     bit selects 25 MHz mode
    

    Setting the RMII Reference Clock Select bit enables 25 MHz rather
    than 50 MHz clock mode.

    Note that this option in only needed for certain PHY revisions with a
    non-standard, inverted function of this configuration bit.
    Specifically, a clock reference (“rmii-ref” below) is always needed to
    actually select a mode.

  • clocks, clock-names: contains clocks according to the common clock bindings.

    supported clocks:

    • KSZ8021, KSZ8031, KSZ8081, KSZ8091: “rmii-ref”: The RMII reference
      input clock. Used to determine the XI input clock.
  • micrel,fiber-mode: If present the PHY is configured to operate in fiber mode

    Some PHYs, such as the KSZ8041FTL variant, support fiber mode, enabled
    by the FXEN boot strapping pin. It can’t be determined from the PHY
    registers whether the PHY is in fiber mode, so this boolean device tree
    property can be used to describe it.

    In fiber mode, auto-negotiation is disabled and the PHY can only work in
    100base-fx (full and half duplex) modes.