Documentation/devicetree/bindings/net/micrel.txt

   1 Micrel PHY properties.
   2
   3 These properties cover the base properties Micrel PHYs.
   4
   5 Optional properties:
   6
   7  - micrel,led-mode : LED mode value to set for PHYs with configurable LEDs.
   8
   9         Configure the LED mode with single value. The list of PHYs and the
  10         bits that are currently supported:
  11
  12         KSZ8001: register 0x1e, bits 15..14
  13         KSZ8041: register 0x1e, bits 15..14
  14         KSZ8021: register 0x1f, bits 5..4
  15         KSZ8031: register 0x1f, bits 5..4
  16         KSZ8051: register 0x1f, bits 5..4
  17         KSZ8081: register 0x1f, bits 5..4
  18         KSZ8091: register 0x1f, bits 5..4
  19
  20         See the respective PHY datasheet for the mode values.
  21
  22  - micrel,rmii-reference-clock-select-25-mhz: RMII Reference Clock Select
  23                                                 bit selects 25 MHz mode
  24
  25         Setting the RMII Reference Clock Select bit enables 25 MHz rather
  26         than 50 MHz clock mode.
  27
  28         Note that this option in only needed for certain PHY revisions with a
  29         non-standard, inverted function of this configuration bit.
  30         Specifically, a clock reference ("rmii-ref" below) is always needed to
  31         actually select a mode.
  32
  33  - clocks, clock-names: contains clocks according to the common clock bindings.
  34
  35         supported clocks:
  36         - KSZ8021, KSZ8031, KSZ8081, KSZ8091: "rmii-ref": The RMII reference
  37           input clock. Used to determine the XI input clock.
  38
  39  - micrel,fiber-mode: If present the PHY is configured to operate in fiber mode
  40
  41         Some PHYs, such as the KSZ8041FTL variant, support fiber mode, enabled
  42         by the FXEN boot strapping pin. It can't be determined from the PHY
  43         registers whether the PHY is in fiber mode, so this boolean device tree
  44         property can be used to describe it.
  45
  46         In fiber mode, auto-negotiation is disabled and the PHY can only work in
  47         100base-fx (full and half duplex) modes.