On Thu, Aug 16, 2012 at 07:03:50AM +0000, Arnd Bergmann wrote: > On Thursday 16 August 2012, Thierry Reding wrote: > > At least for the config space this is incorrect. There's a single region > > to access the configuration space for all devices below the PCIe > > controller. So it is shared by both (Tegra20) or all three (Tegra30) > > root ports. > > > > I'm not sure about PCI domains. Do you have any good pointers as to > > where I could read up on them? If they need special hardware support, > > then I think Tegra doesn't support them either. At least I haven't come > > across any mention of domains while going through the, admittedly some- > > what sparse on PCIe, Tegra documentation. > > I was referring to the same thing here: if you had a separate config > space for each root port, they would by definition be separate PCI > domain. So you don't have them. I see, that makes sense. Thanks for explaining. Thierry
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