Re: [PATCH v6 4/4] i2c, i2c_imc: Add DIMM bus code

One Thousand Gnomes
2014-02-21T15:33:19Z

> I'm suggesting identifying a range of addresses on a bus with a "port"
> (or whatever it should be called). Multiple ports could claim
> non-overlapping ranges on the same bus.

Which is fine until you meant a mux or a device that can be moved about
by writing to it, or has a wide range of addresses determined by
strapping.

> In this particular case (Intel LGA2011 systems), there's only one sane
> way to wire up the busses, since the memory controller *is* the smbus
> master. According to the JEDEC spec, each DIMM slot is has three pins

Ok that helps a lot for the specific case, and you have at least in
theory got a flag between the OS and BIOS to avoid things like SMM
throwing parties on the smbus while you are using it.