From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: Beagle PM hangs Date: Fri, 30 Jan 2009 09:12:09 -0800 Message-ID: <87hc3gk9au.fsf@deeprootsystems.com> References: <345163910901280814nb847b34pca50f4ee6e49929d@mail.gmail.com> <87zlhbqtrv.fsf@deeprootsystems.com> <87skn3qq6x.fsf@deeprootsystems.com> <8bf247760901300616k53722fb0if55e2d07c71df10c@mail.gmail.com> <13B9B4C6EF24D648824FF11BE89671620376DEC131@dlee02.ent.ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from rv-out-0506.google.com ([209.85.198.239]:8032 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752137AbZA3RMN (ORCPT ); Fri, 30 Jan 2009 12:12:13 -0500 Received: by rv-out-0506.google.com with SMTP id k40so525028rvb.1 for ; Fri, 30 Jan 2009 09:12:12 -0800 (PST) In-Reply-To: <13B9B4C6EF24D648824FF11BE89671620376DEC131@dlee02.ent.ti.com> (Richard Woodruff's message of "Fri\, 30 Jan 2009 08\:34\:46 -0600") Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: "Woodruff, Richard" Cc: Sriram V , Peter Reid , Koen Kooi , "linux-omap@vger.kernel.org" Richard, "Woodruff, Richard" writes: >> I wait for a min and try to wakeup - It works. >> >> If i wait a little longer before waking it up say, 3 or 4 minutes. >> It does not wakeup. > > That is consistent with your memory not being placed into self refresh properly. > > 5 general bugs I've seen over time: > sw bug: > - ctrl sequence issue before sleep > - CKE balls not muxed correctly > - crash on unexpected wake path > chip bug: > - (3430 >= es3 requires a errata sequence to work) > board bug: > - hooking ddr-chip-CKE wrongly or a way OMAP doesn't support like sharing between dies. Another possibility is that the the memory timings for the custom board are not set correctly. Richard, Do you have pointers to CDP/zoom code that has a workaround for the 3430 > es3 errata as well as the 'ctrl sequence issue' you mentioned? Kevin