> When using the SIOC[SG]MIIREG ioctl() call, how does one control
> whether the fake fixed-link bus is accessed or the real macb-mdio bus
> is accessed?
As far as i remember, that ioctl is based on the interface name. So it
will access the MDIO bus of the PHY that is attached to the MAC.
I guess you have user space drivers using the IOCTL to access devices
on the real bus? A switch? Can you swap to a DSA driver?
> How does the macb driver decide which bus/id combination to use as
> "the phy" that controls the link duplex/speed settting the the MAC?
phy-handle points to a PHY.
Andrew
