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From: Jens Gehrlein <sew_s@tqs.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Low BogoMIPS on MPC8541
Date: Thu, 29 Oct 2009 08:19:29 +0100	[thread overview]
Message-ID: <4AE94201.8000302@tqs.de> (raw)
In-Reply-To: <EDB9CF97-4785-4082-8C3F-1E9C8E562B2F@kernel.crashing.org>

Hi Kumar,

Kumar Gala schrieb:
> On Oct 27, 2009, at 10:29 AM, Luigi 'Comio' Mantellini wrote:
> 
>> Hi All,
>>
>> I'm working on a stripped-down mpc8541 board (that has just
>> a serian and twe enets).
>> I have an issue on delay calibration. In fact at boot time, I see the
>> following linux printk message on the serial console:
>>
>> ....
>> Calibrating delay loop... 83.20 BogoMIPS (lpj=166400)
>> ....
> 
> The value seems reasonable.  What freq is the core running at  
> (guessing 833Mhz).  My 1.5Ghz 8572 has a bogomips of 150.

Seems that the value is about a tenth of the core frequency.
I observed similar on TQM8548. Although I know, that the value
is bogus (as the name tells), do you know the reason, why it
isn't the core frequency?

Thanks.

Kind regards,
Jens

  reply	other threads:[~2009-10-29  7:19 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-27 15:29 [U-Boot] Low BogoMIPS on MPC8541 Luigi 'Comio' Mantellini
2009-10-27 16:37 ` Kumar Gala
2009-10-29  7:19   ` Jens Gehrlein [this message]
2009-10-29 10:36     ` Wolfgang Denk
2009-10-29 12:09       ` Luigi Mantellini

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