BogoMIPS change in 3.6+

Rob Herring robherring2 at gmail.com
Thu Jan 31 15:57:56 EST 2013


On 01/31/2013 10:23 AM, Will Deacon wrote:
> Hi Rob,
> 
> On Thu, Jan 31, 2013 at 04:15:11PM +0000, Rob Herring wrote:
>> The BogoMIPS value has changed on highbank since the commit below in
>> 3.6. It is now half the value it used to be. Does that matter other than
>> perception (I've checked that I'm not running at half the freq)?
> 
> Are you registering a delay timer? If not, then the delay loop should be
> identical to what it was before, so that's certainly a surprise...
> 
> Are your delays ballpark correct (try 2ms)?
> 

Yes, the delays are correct and this is an A9. So I guess this may be a
surprise, but seems it is a non-issue. I'm sure I'll be getting asked
about this...

Rob




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