On Tuesday 13 September 2011 11:54:36 Grant Likely wrote:

quoted

I guess it still depends, it's probably a grey area. If the register layout
is the same on all c6x cores and it's only for core stuff, there is no need
to put it in the device tree. If you have multiple soc (off-core) devices
being controlled through the registers, or the numbers vary a lot between
different chips, I would put all of them into the device tree.

It's an interrupt controller.  There still needs to be a node to act
as the interrupt-parent and specify #interrupt-cells.

I was talking about whether the interrupt controller node needs to have
a "regs" property or not. If the register space is similar to generic
MMIO registers, it should have one, like all other users of these
registers. If it's more like ARM's coprocessor extension, it probably
should not.

	Arnd