[U-Boot] amcc kilauea odd crashes

Adam Graham agraham at amcc.com
Thu Oct 23 20:21:05 CEST 2008


 

> -----Original Message-----
> From: Stefan Roese [mailto:sr at denx.de] 
> Sent: Thursday, October 23, 2008 4:15 AM
> To: u-boot at lists.denx.de
> Cc: Wolfgang Denk; Markus Klotzbücher; Adam Graham; Victor Gallardo
> Subject: Re: [U-Boot] amcc kilauea odd crashes
> 
> Hi Wolfgang,
> 
> On Thursday 23 October 2008, Wolfgang Denk wrote:
> > In message <200810231251.36841.sr at denx.de> you wrote:
> > > Is this a 600MHz Kilauea? This is a known issue, that the new 
> > > autocalibration
> >
> > No, this is a CPU Rev. A board at 400 Mhz.
> 
> Probably with the same DDR2 frequency.

Correct, the important clocking is the DDR2 frequency and not the CPU frequency (i.e. the PLB of 200MHz set on this board).


> 
> > > code has a problem here. I reported this problem a few weeks ago. 
> > > AMCC is currently working on a fix for this.
> >
> > Should we not backout the autocalib patches that cause the problem 
> > until a stable working solution is found?
> 
> Not sure. My hope is that AMCC find a solution quickly. They 
> should receive the failing board this week.
> 
> And they already did send a "fix" (more a workaround) for 
> this problem:
> 
> [PATCH v2] ppc4xx: Fix DDR2 auto calibration on Kilauea 600MHz
> 
> which you rejected. So I suggest to wait for a few days.
> 
> Victor, Adam, did you already receive my board?

We have not received your board yet.  Do you have a shipping tracking number we can check?

Thanks,
Adam

> 
> Best regards,
> Stefan
> 
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