RE: [PATCH 01/19] ARM: OMAP4: PM: save/restore all DPLL settings in OFF mode

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On Wed, May 02, 2012 at 16:30:26, Shilimkar, Santosh wrote:

> >> How ?
> >> SRAM is sower memory than DDR so I don't see how it
> >> will reduce latency.
> >>
> >
> > I am just guessing if that's indeed the case ;)
> > Haven't done any measurements to really check if that's indeed the case though.
> >
> You don't have to do any real measurements at least on OMAP.
> OCMC RAM is interfaced over L4 and MPU has to cross two interconnect
> bridges to reach to SRAM. DDR is more of direct path and much faster.

Hmm, I was under the impression that OCMC RAM was on L3, at least for OMAP4.
Maybe there's a extra low latency path for DDR that I am missing.

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