On Thu, Mar 08, 2012 at 02:30:07PM +0100, Linus Walleij wrote: > The key reason is that we have hardware blocks with different > characteristics on the order to do things, whereas in some other > systems (like shmobile I guess) every IP block shall be twisted > the same way. We have a mixed legacy of ARM PrimeCells and IP > blocks from different corners of the world and just cannot do > it in one single way. ARM PrimeCells already have some > centralized runtime PM callbacks. Yeah, the other issue on some systems with long histories is that if you've got many generations of SoC it can be easier to roll updates out over drivers than get all the SoCs updated to the latest infrastructure along with supporting new ones.
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