Messages in this thread | | | Date | Wed, 19 Nov 2008 19:43:09 +0100 | From | Pierre Ossman <> | Subject | Re: [patch 7/7] SDHCI: Add change_clock callback for glue drivers |
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On Sat, 15 Nov 2008 23:57:39 +0000 Ben Dooks <ben-linux@fluff.org> wrote:
> > The controller has a number of possible clock sources, the bus clock > it is connected to (generally called hclk) and three more clocks from > the heirachy that is muxed/divided from either an 48MHz, 27MHz or the > EPLL. > > The callback allows the recalculation and selection of the best clock > to run the card clock for the controller. >
Can these clock sources change mid-flight? Otherwise I don't see the need for a callback up to the sdhci core. But I don't see any connection points for such events.
-- -- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org rdesktop, core developer http://www.rdesktop.org
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