The mdio driver interface is generally useful for devices that require
MDIO without the full MII bus interface. This lifts the driver/interface
out of etherswitch(4), and adds a mdio(4) man page.
Submitted by: Landon Fuller <landon@landonf.org>
Differential Revision: https://reviews.freebsd.org/D4606
* Fix API changes;
* remove unused code;
* Allow some switches to be used that don't expose a set of PHY
registers for the CPU facing port (eg the ADM6996 for the Ubiquiti
Routerstation.)
Submitted by: Luiz Otavio O Souza <loos.br@gmail.com>
Reviewed by: ray
This is intended to be used as a stop-gap for switch devices
which expose multiple ethernet PHYs but we don't have a driver
for - here, etherswitchcfg and the general switch configuration
API can be used to interface to said PHYs.
Submitted by: Luiz Otavio O Souza <loos.br@gmail.com>
