lkml.org 
[lkml]   [2008]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 7/7] SDHCI: Add change_clock callback for glue drivers
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

WARNING: This correspondence is being monitored by the
Swedish government. Make sure your server uses encryption
for SMTP traffic and consider using PGP for end-to-end
encryption.


\
 
 \ /
  Last update: 2008-11-19 19:45    [W:0.219 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site