From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Gatliff Subject: Re: Restart after 4 min of operation? Date: Tue, 03 Nov 2009 11:47:38 -0600 Message-ID: <4AF06CBA.3040609@billgatliff.com> References: <4AEFA4EE.40308@billgatliff.com> <4AF01901.2050100@mlbassoc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-yx0-f187.google.com ([209.85.210.187]:36303 "EHLO mail-yx0-f187.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752619AbZKCRrf (ORCPT ); Tue, 3 Nov 2009 12:47:35 -0500 Received: by yxe17 with SMTP id 17so5620835yxe.33 for ; Tue, 03 Nov 2009 09:47:40 -0800 (PST) In-Reply-To: <4AF01901.2050100@mlbassoc.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Gary Thomas , linux-omap@vger.kernel.org Gary Thomas wrote: > On 11/02/2009 08:35 PM, Bill Gatliff wrote: >> Guys: >> >> >> Can someone give me any ideas as to why my Beagleboard-like platform >> would spontaneously restart after precisely four minutes of operation? >> No OOPS, no nothing. This is with 2.6.32-rc5. >> > > BeagleBoard like? More details are probably required for much help. > > How do you power it? My BeagleBoard is powered via the OTG. I've > seen it reset if I hang too much on the USB host port (exceed the > meager power budget) It's a clone of a BeagleBoard, but with more and friendlier I/O. CUS package, and they use the TPS65023RSB power supply manager. I'm not ready to bury anyone in more details yet, since it's a client's hardware and I feel like I'm imposing already... :) When I boot it to my kernel, which is based on 2.6.32-rc5, it comes up fine and then for no apparent reason after four minutes goes through a reset again. I know it's approximately the same each time, because I have uptime running in a loop so that I can conveniently see when it dies. The very same tree boots and runs properly on a true BeagleBoard rev C. What's even more wierd is that even when sitting at the u-boot prompt before launching any kernel at all, the board does the same thing--- spontaneous reset after about four minutes. The client provided me the u-boot image, and it says it's a modified one from the OMAP3EVM--- it even provides that machine id. The above behavior makes me suspect hardware, but read on before you agree. Finally, the client provided me a kernel of unknown origin (it says it's a 2.6.29-rc2) that appears to run fine---- no hiccup at 4 minutes. Of course, that kernel doesn't have the features they need. I'm going over it now to see if there's a magic bit somewhere that mine is missing, but I'm at a bit of a loss to explain what I'm seeing right now. Anyone have any ideas? Bizzare. (BTW, nice to hear from you again, Gary! It's been a while.) b.g. -- Bill Gatliff bgat@billgatliff.com