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MDIO(4)			 BSD Kernel Interfaces Manual		       MDIO(4)

NAME
     mdio -- IEEE 802.3	Management Data	Input/Output interface

SYNOPSIS
     To	compile	this driver into the kernel, place the following line in your
     kernel configuration file:

	   device mdio

DESCRIPTION
     The mdio driver provides an interconnection between the Media Access Con-
     trol (MAC)	sublayer and Physical Layer (PHY) entities' control and	status
     registers,	as defined by the IEEE 802.3 Standard.

     The mdio layer allows device drivers to share common support code for
     various external PHY devices.

     MDIO is one of two	signal interfaces that comprise	the Media Independent
     Interface (MII) defined by	the IEEE 802.3 Standard.  The miibus(4)	driver
     provides support for devices that require full MII	support.

SEE ALSO
     miibus(4)

STANDARDS
     More information on MDIO can be found in the IEEE 802.3 Standard.

HISTORY
     The mdio driver first appeared in FreeBSD 10.0.

AUTHORS
     The driver	was written by Stefan Bethke <stb@lassitu.de>.

BSD			       December	17, 2015			   BSD

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS | HISTORY | AUTHORS

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