Re: [PATCH] pm_qos: Add QoS param, minimum system bus frequency

From: mark gross
Date: Wed Jan 06 2010 - 13:49:39 EST


On Mon, Jan 04, 2010 at 03:18:52PM -0800, David Brown wrote:
> On Mon, Jan 04, 2010 at 01:38:52PM -0800, mark gross wrote:
>
> > Also, on your platform you have a throttling driver controlling the
> > frequency of some bus, that will use this value as a constraint on how
> > far it will throttle. no? I would be interested in seeing this driver
> > sometime. (I just want to make sure no one bastardizes pm_qos into an
> > operating point thing. I'm not sure I can justify why but I want to
> > avoid that.)
>
> We're part of a system with several other devices. Our driver
> just passes the frequency on as our voted minimum.
>
> Look for PM_QOS_SYSTEM_BUS_FREQ in the file:
>
> https://www.codeaurora.org/gitweb/quic/la/?p=kernel/msm.git;a=blob;f=arch/arm/mach-msm/clock.c;h=3a22b5abb8e8acf876367dc6c013fe507af9c0ac;hb=287d333b03df8faafd3a480abc8e121110870839
>
> http://tinyurl.com/ye7eg33
hurray for tinyurls!

It looks pretty ok to me on my initial inspection.

--mgross

> David
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