Hi All,
I'm looking at adding a new Gigabit Ethernet driver (Realtek RTL8211CL) to U-Boot. The datasheet, in addition to register descriptions, mentions MII/GMII and PHY support (but not much on the specifics). Now in U-Boot there appears to be a common set of code relating to PHY and MII. There appears to be a mix of Ethernet drivers that use MII/PHY and drivers that do not, but I cannot seems to quite get me head around it all. One weird thing is that there does not appear to be any granular inclusion of PHY drivers - /include/config_phylib_all_drivers.h defines them all when CONFIG_PHYLIB is defined, but I could not find any boards that defined just one PHY driver. I also cannot find how MII/PHY functions interact with PCI for PCI based cards.
In short, I'm very confused - Can anyone give me any pointers to how it all fits together
Thanks,
Graeme