[U-Boot-Users] Re: RFC: Booting the Linux/ppc64 kernel without Open Firmware HOWTO (#2)

AFAICS, the pci device tree is currently required if you want to use an IOMMU

Works fine without it, on Maple at least.

or if you want PCI-X or PCIe style devices with extended PCI config space.

Dunno.

I wouldn't be surprised if other functionality also depends on it.

If you're unlucky enough to have inherited your code from the pSeries port, then yes, it probably does.

Segher