From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Peter 'p2' De Schrijver" Subject: Re: new PM branch available Date: Wed, 4 Feb 2009 18:38:46 +0200 Message-ID: <20090204163846.GC22194@codecarver.research.nokia.com> References: <87iqoij2me.fsf@deeprootsystems.com> <20090202174532.GJ4954@codecarver.research.nokia.com> <87wsc8bp79.fsf@deeprootsystems.com> <20090204005228.GA30147@codecarver.research.nokia.com> <87eiye89y1.fsf@deeprootsystems.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from smtp.nokia.com ([192.100.122.230]:16763 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751235AbZBDQjI (ORCPT ); Wed, 4 Feb 2009 11:39:08 -0500 Content-Disposition: inline In-Reply-To: <87eiye89y1.fsf@deeprootsystems.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Kevin Hilman Cc: "linux-omap@vger.kernel.org" Hi Kevin, > > Did you happen to notice what was keeping PER out of retention before > the u-boot upgrade? Looks like we might still need some init-time > reset code to compensate for bootloaders. > No. I still have the old u-boot version though, so I can reproduce the problem. After fosdem :) > > The only way to get core to retention was to force idle USBOTG and > > disable the USBOTG driver. > > This is the same issue on 3430SDP. The PM branch code does the > force-idle, and I usually have USB built as modules and not loaded > when I do the tests. > Ok. > I'm guessing this is a result of u-boot configuring/using USB. > > > Dynamic retention seems to work only once the system has been in static > > retention once. > > > > Static off mode seems to work, but resume from off kills the UART. The > > system seems to run though, at least LED0 flickers as usual when the > > system runs. Sometimes it hangs and I have seen one reboot. > > I have noticed this as well. > > I haven't looked at all at the T2 scripts being used on Beagle. Do > you think some of these issues may be related to those scripts? > It might be. They are very basic compared to some others I have seen. I will have a look at those tonight. Cheers, Peter. -- goa is a state of mind