From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Hoffmann Subject: Re: CPU_IDLE causes random reboots on custom 4430 Date: Sat, 22 Sep 2012 19:11:34 +0200 Message-ID: <505DF146.6050100@gmail.com> References: <505CEEFD.1080507@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:45750 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752009Ab2IVRLk (ORCPT ); Sat, 22 Sep 2012 13:11:40 -0400 Received: by eaac11 with SMTP id c11so1387399eaa.19 for ; Sat, 22 Sep 2012 10:11:39 -0700 (PDT) In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: "Shilimkar, Santosh" Cc: Chris Hoffmann , linux-omap@vger.kernel.org On 09/22/2012 07:45 AM, Shilimkar, Santosh wrote: > On Sat, Sep 22, 2012 at 4:19 AM, Chris Hoffmann wrote: >> Hi, >> >> We're trying to get a custom 4430 board (aka. nook tablet with OMAP4430 >> ES2.3 HS TWL6030 ES2.1) working with p-android-omap-3.0 on android jelly >> bean. The board works quite well, but we experience random hangs and the >> watchdog kicks the board to reboot. >> > On the same kernel, you should have support for the persistent log. You might > want to check the output. That should give you pointers on what CPU was > doing before the freeze which resulted in reboot. Hi, I have some problems to provide logs. If I add -DDEBUG to cpuidle44xx.o the problem doesn't seem to occur. It could be that printk-ing alleviates the issue. Also the watchdog seems to shutdown the device rather than rebooting it (or it hangs?) and then I can't provide /proc/last_kmsg. How could I provide more info? Rgds, Chris