From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: Re: What is missing from musb - linux-omap merge? Date: Thu, 7 Apr 2011 13:34:52 +0300 Message-ID: <20110407133452.afc188e1.jhnikula@gmail.com> References: <20110406162334.8dcb5a7d.jhnikula@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ew0-f46.google.com ([209.85.215.46]:47942 "EHLO mail-ew0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752634Ab1DGKdg (ORCPT ); Thu, 7 Apr 2011 06:33:36 -0400 Received: by ewy4 with SMTP id 4so736241ewy.19 for ; Thu, 07 Apr 2011 03:33:34 -0700 (PDT) In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Hema Kalliguddi Cc: OMAP Linux discussion , Felipe Balbi Hi On Thu, 7 Apr 2011 14:38:06 +0530 Hema Kalliguddi wrote: > I tried the core retention with v2.6.39-rc1 with OMAP3630Zoom3 board > and don't observe any issues. Core is transitioning to retention without > any issue, > with or without musb driver loaded. > > But on OMAP3430SDP I am observing the crash when try to do > echo mem > /sys/power/state. > > Attached is the fix for this issue and core transitions to retention. > Hmm.. suspend/resume are fine on Nokia N900 with and without the patch. Patch also didn't fix the idle retention. > When you say retention is not working can you please carify what is > happening? > are you trying in idle path retention or suspend/resume? > Sorry not being verbose enough, I was testing the idle retention. For me it looks these differencies are explained by different bootloaders. As Kevin told they may leave MUSB in a wrong state. Was it so that before hwmod conversion the musb did IP reset etc and now this feature is missing? So I'm thinking is this problem a regression or missing feature after hwmod conversion? -- Jarkko