On Sunday 28 August 2011, David Gibson wrote:

quoted

Right, and I guess we can simply ignore DMA and ioport resources because they
are extremely rare, right?

Well, remember it's where resources can appear in the DT node that
matters, not what the types are in the platform device.  ioports will
typically appear suitably encoded in 'reg', so that's covered.  I've
never been very clear on what exactly DMA resources cover, but yeah,
you might need something for dma-reg or other device tree properties.

DMA resources are only meaningful with the legacy ISA dma API, all
other uses are basically ad-hoc and I think we can ignore them or
replace them with proper bindings when converting the drivers to
device-tree based probing.

	Arnd