[Gta04-owner] Fwd: [beagleboard] 1ghz news?

[NeilBrown]

On Thu, 25 Jul 2013 08:32:20 +0200 "Dr. H. Nikolaus Schaller"
<hns at goldelico.com> wrote:

> 
> Am 24.07.2013 um 15:57 schrieb Dr. H. Nikolaus Schaller:
> 
> > may be of interest for you:
> > 
> > again some progress on 1 GHz kernels (except for USB stability).
> 
> And someone has written a blog about this 1 GHz DM3730CBP100 issue:
> 
> http://teknoman117.wordpress.com/2013/07/24/beagleboard-xm-1-ghz-operation-safely-and-reliably/
> 
> One statement is very important for us as well and it shows how dramatic the situation is with newer kernels (and we did not really notice since all devices were tested with the 2.6.32 hw-validation kernel):
> 
> "the last time it was safe was kernel 3.0.28 back in early 2012"
> 
> So we should also work on:
> 
> http://projects.goldelico.com/p/gta04-kernel/issues/440/
> 

If anyone wants to look into this, I've updated my 'mainline' branch to
3.11-rc2 (or close to that).
Lots of things work.  The most obvious problem is that wifi is interfering
with suspend/resume.  If you remove all the wifi modules, suspend/resume
seems to work OK.  With wifi loaded, resume doesn't.

I didn't rebase my branch at all this time, just added more stuff on top.  So
there is a reasonable change that it will merge with the "neil-plus" branch
without too much pain.

BTW my board runs at 1GHz *without* the adaptive-body-bias stuff.  However
maybe it isn't "safe" ... i.e. presumably it can overheat or something.  I
don't run anything that would keep it at 1GHz more than a few seconds at a
time.

NeilBrown

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 828 bytes
Desc: not available
URL: <http://lists.goldelico.com/pipermail/gta04-owner/attachments/20130728/74e2b408/attachment.bin>