micrel.txt

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    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         LAN8814: register EP5.0, bit 6
   20 
   21         See the respective PHY datasheet for the mode values.
   22 
   23  - micrel,rmii-reference-clock-select-25-mhz: RMII Reference Clock Select
   24                                                 bit selects 25 MHz mode
   25 
   26         Setting the RMII Reference Clock Select bit enables 25 MHz rather
   27         than 50 MHz clock mode.
   28 
   29         Note that this option in only needed for certain PHY revisions with a
   30         non-standard, inverted function of this configuration bit.
   31         Specifically, a clock reference ("rmii-ref" below) is always needed to
   32         actually select a mode.
   33 
   34  - clocks, clock-names: contains clocks according to the common clock bindings.
   35 
   36         supported clocks:
   37         - KSZ8021, KSZ8031, KSZ8081, KSZ8091: "rmii-ref": The RMII reference
   38           input clock. Used to determine the XI input clock.
   39 
   40  - micrel,fiber-mode: If present the PHY is configured to operate in fiber mode
   41 
   42         Some PHYs, such as the KSZ8041FTL variant, support fiber mode, enabled
   43         by the FXEN boot strapping pin. It can't be determined from the PHY
   44         registers whether the PHY is in fiber mode, so this boolean device tree
   45         property can be used to describe it.
   46 
   47         In fiber mode, auto-negotiation is disabled and the PHY can only work in
   48         100base-fx (full and half duplex) modes.
   49 
   50  - coma-mode-gpios: If present the given gpio will be deasserted when the
   51                     PHY is probed.
   52 
   53         Some PHYs have a COMA mode input pin which puts the PHY into
   54         isolate and power-down mode. On some boards this input is connected
   55         to a GPIO of the SoC.
   56 
   57         Supported on the LAN8814.

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sys/contrib/device-tree/Bindings/net/micrel.txt