[PATCH] omap3: beagle: Use GPTIMERi 1 for clockevents

[Premi, Sanjeev]

> -----Original Message-----
> From: Paul Walmsley [mailto:paul at pwsan.com] 
> Sent: Sunday, June 26, 2011 4:17 AM
> To: Koen Kooi; Premi, Sanjeev
> Cc: linux-omap at vger.kernel.org List; linux-arm-kernel
> Subject: RE: [PATCH] omap3: beagle: Use GPTIMERi 1 for clockevents
> 
> On Sun, 26 Jun 2011, Premi, Sanjeev wrote:
> 
> > [sp] I didn't include a reason - because the problem may not
> >      be reproducible on the public trees.
> > 
> >      During tests performed in internal development trees, the
> >      BogoMIPS calculations @ 1GHz wouldn't go beyond "830-850"
> >      range. While there was no such inconsistency on OMAP3EVM.
> 
> There are some other reasons to avoid GPTIMER12 when 
> possible, which you 
> should probably put in the patch description.  The most 
> important, in my 
> view, is that the clock source for GPTIMER12 is much less 
> frequency-stable 
> than the clock sources for GPTIMER1.  So using GPTIMER12 can 
> result in 
> major time skew over a fairly short interval.

[sp] Thanks for details. I will include in next rev.

> 
> I've been meaning to send a patch like this for some time, so 
> I'm happy to 
> see this fixed.
> 
> 
> - Paul
>