Board should export/expose resources in a general way so drivers can use
them in a common, transparent way. That's the point of a portable OS
If there's not a standard way in NuttX to export R/MII (I haven't looked at
it), maybe you need to create it
The PHY R/MII interface is exported via a socket ioctl() interface.
The PHY interface is typically controlled by the Ethernet driver using
PHY hooks. See, for example, arch/arm/src/stm32/stm32_eth.c, PHY ioctl
functions . It accessed by a user-space ioctl() command on a socket
descriptor. The network stack forwards device-related ioctl() commands
to the Ethernet device driver ioctl() functionis.
I suggested using file_open() and file_ioctl() in a previous email.
That is wrong. file_ioctl() cannot be used to access socket_ioctls().
You would have to use psock_ioctl().
