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From: grinberg@compulab.co.il (Igor Grinberg)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH RFC] ARM: PXA27x: CPUFREQ: Don't use fastbus mode
Date: Sun, 27 Mar 2011 12:09:20 +0200	[thread overview]
Message-ID: <4D8F0CD0.8010203@compulab.co.il> (raw)
In-Reply-To: <201103271248.02774.anarsoul@gmail.com>

On 03/27/11 11:48, Vasily Khoruzhick wrote:

> On Sunday 27 March 2011 12:09:21 Igor Grinberg wrote:
>> Possibly, but Z2 is not the only one using PXA27x.
>> And of course you lose performance, unless you don't care,
>> because if it does not work at all, you don't care about performance,
>> but again it is wrong to force all PXA27x based boards to this.
> Ok, that's why I've sent this patch with RFC in subject - Z2 is the only 
> PXA270-based device I own :)
>
>> cm-x270 and em-x270 work well with fast bus bit set with userspace governor
>> and with the above frequencies.
> What about ondemand and conservative governors?

I haven't tested those and I don't think I will have an opportunity in the near future,
but is it really important also to test those? Are they different in any special way?

>> I'd check the hardware (especially DRAM).
>> And I agree with Marek, if you want to disable the fast bus,
>> then it should be board (or otherwise) controllable.
> Ok
>
> Regards
> Vasily

-- 
Regards,
Igor.

  reply	other threads:[~2011-03-27 10:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-26 19:51 [PATCH RFC] ARM: PXA27x: CPUFREQ: Don't use fastbus mode Vasily Khoruzhick
2011-03-27  0:52 ` Marek Vasut
2011-03-27  7:28   ` Vasily Khoruzhick
2011-03-27  9:09     ` Igor Grinberg
2011-03-27  9:48       ` Vasily Khoruzhick
2011-03-27 10:09         ` Igor Grinberg [this message]
2011-03-27 14:45           ` Vasily Khoruzhick
2011-03-27 14:50             ` Marek Vasut
2011-03-27 14:56               ` Vasily Khoruzhick
2011-03-27 15:34                 ` Marek Vasut
2011-03-27 16:56                   ` Robert Jarzmik
2011-03-27 17:13                     ` Vasily Khoruzhick
2011-03-28  8:22                       ` Igor Grinberg
2011-04-11 13:46       ` Pavel Machek
2011-04-11 20:11         ` Vasily Khoruzhick
2011-04-12  5:22           ` Marek Vasut

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