Re: [PATCH] MMCI Aggressive clocking v2

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On Mon, Mar 23, 2009 at 02:00:32PM +0100, Linus Walleij wrote:
> This patch gates the clock on the MMCI agressively, while still
> conforming to the MMC spec to leave the clock on for 8 full
> bus cycles before gating it off. The disablement is handled by
> splitting off a work item which gives some additional slack in
> the typical case.

Hmm.

Is there any chance you can measure the power saving achieved by this, vs
using the "clock powersave" feature (where the host automatically turns
the clock off after 8 cycles)?

In other words, what is the benefit of the additional code vs just letting
the hardware do it?

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