[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Freescale iMX53 Quick Start board

On Fri, Aug 05, 2011 at 04:07:06PM +0000, Phil Endecott wrote:
> Hi Steve,
> Steve McIntyre <steve.mcintyre <at> linaro.org> writes:
> > Hi folks,
> > 
> > We've got a number of discount vouchers for these
> Too late for me...
> > We're about to purchase a number
> > of these for buildds for the Debian armhf port
> Hmm.  Are you sure it's the best choice?  It has a single Cortex A8 (like 
> the old Beagle Board).  The Panda Board has a dual Coretex A9.  I've not
> benchmarked them, but I would expect the Panda to be a lot faster for 
> CPU-bound tasks.  The iMX53 has the advantage of SATA if you expect to be 
> I/O limited, but if I were building a "farm" I think I'd seriously consider 
> NFS and negligible local storage.

make + NFS = nightmare in many cases.

> My choice of the iMX53 was based mainly on its video features (it has 
> analogue VGA out, which the Panda doesn't) and more than a bit of 
> prejudice because I seemed to be the interested only person at CELF last 
> year who didn't get a free Panda.
> Anyway, if you do go with the iMX53, do keep us informed.  I'm currently 
> working on mechanical/electrical things e.g. a box and power supply.  Note 
> that the board seems to have very little capacitance on its 5V power input, 
> so it can "brown out" if you connect something (via USB or otherwise) that 
> has non-trivial inrush current.  There is also the fact that it powers-on 
> "off" until you press a button, which I imagine is probably not the behaviour 
> that you'll want.

I was wondering how their power control is done.  Obviously a SATA drive
would need external power.

Len Sorensen

Reply to: