> One more add, yes, I am looking the drivers/net/mdio, it is better to
> implement standalone MDIO driver when writing the MAC driver at the beginning.
> Now if I abstract MDIO driver from FEC driver, dt bindings would change, it
> will break all existing implementations in the kernel based on FEC driver,
> let them can't work.
> How to compatible the legacy dt bindings? I have no idea now. At the same
> time, I also feel that it seems not necessary to rewrite it.
I have a reasonable understanding of the FEC MDIO driver. I have
broken it a few times :-)
It is going to be hard to make it an independent driver, because it
needs access to the interrupt flags and the clocks for power
saving. From a hardware perspective, it is not an independent hardware
block, it is integrated into the MAC.
XDP probably is your easier path.
Andrew
