From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jukka Ruohonen <jruohonen@iki.fi>
Subject: Re: Possible bug
Date: Tue, 24 Jul 2012 15:07:42 +0300
Message-ID: <20120724120742.GA3293@marx.bitnet>
References: <WC20120721070908.150028@bellino.com.ar> <201207241401.54084.trenn@suse.de>
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To: Thomas Renninger <trenn@suse.de>
Cc: Ariel@bellino.com.ar, cpufreq@vger.kernel.org

On Tue, Jul 24, 2012 at 02:01:53PM +0200, Thomas Renninger wrote:
> On Saturday, July 21, 2012 09:09:08 AM Ariel Norberto Bellino wrote:
> > cpufreq-info shows this in my laptop:
> > hardware limits: 800 MHz - 2.53 GHz
> > available frequency steps: *2.53 GHz, 2.53 GHz*, 1.60 GHz, 800 MHz
> This should be a typical and well-known BIOS setup.
> For some reason some BIOSes export the highest frequency twice (or with
> one HZ difference or similar). Linux kernel should be able to handle this
> gracefully. This is nothing to worry about.

I think this is because of the so-called Turbo Boost. I recall at least
couple of Intel specifications or white papers in which it was adviced that
BIOS vendors should report the "turbo state" as the maximum + 1 MHz.

- Jukka.