Atheros ATH9485 in athn

[Z Ero]

Can any one give an idea as to the work required to get support for
the ATH9485, found in the the AR5B225 and AR5B125 cards? I have a
bunch of 225s and 125s that I would like to use with Openbsd but I see
this chipset is not currently supported by the athn driver. I guess
FreeBSD and Linux support it.