[ECOS] PHY's and generic PHY's and CDL

[Chuck McManis <ecos at mcmanis dot com>]

Gary, (and anyone else who wants to comment)

per Andrew's suggestion I've been putting developing my changes for the 
Epia MII ethernet driver as a separate PHY driver and MAC driver. To that 
end I created a VT6103.c in the phy/src directory and added it to the CDL 
file.

But when I read the data sheet on this PHY it says it implements the 803.3u 
standard which has a number of pre-defined bits and registers. Some of 
those defines are in the eth_phy_dev.h file.

So it seems the only customization in the phy specific C file, if the PHY 
implements the standard, is the "description" of the PHY and the 
manufacturer's ID. With that being the case it seems like a generic PHY 
support routine could be written where the description and ID for the phy 
were provided by CDL constructs.

I'm digging into how CDL generates files with ecosconfig so that I can see 
if this is a reasonable thing to do.

--Chuck




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