Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757711Ab0FJNPS (ORCPT ); Thu, 10 Jun 2010 09:15:18 -0400 Received: from smtp6-g21.free.fr ([212.27.42.6]:42838 "EHLO smtp6-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753608Ab0FJNPR (ORCPT ); Thu, 10 Jun 2010 09:15:17 -0400 From: Robert Jarzmik To: Marek Vasut Cc: linux-arm-kernel@lists.infradead.org, Eric Miao , dbaryshkov@gmail.com, Cyril Hrubis , arminlitzel@web.de, kernel list , utx@penguin.cz, lenz@cs.wisc.edu, rpurdie@rpsys.net, pave@ucw.cz, thommycheck@gmail.com, zaurus-devel@www.linuxtogo.org, omegamoon@gmail.com Subject: Re: usb gadget on zaurus and kexec References: <20100519154618.GA26381@atrey.karlin.mff.cuni.cz> <201006100900.23981.marek.vasut@gmail.com> X-URL: http://belgarath.falguerolles.org/ Date: Thu, 10 Jun 2010 15:14:52 +0200 In-Reply-To: <201006100900.23981.marek.vasut@gmail.com> (Marek Vasut's message of "Thu, 10 Jun 2010 09:00:23 +0200") Message-ID: <87wru7xc4z.fsf@free.fr> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1359 Lines: 36 Marek Vasut writes: >> > Dumping out the registers of the two situations and doing a comparison >> > then might be a quick way. >> >> Any debugging update on this? > > Yeah, there's a workaround. Cyril's working on a proper fix, but that might take > some time. Simply -- UP2OCR is misconfigured. That's quite interesting. In the pxa27x_udc gadget driver, I seem to have a regression on the resume from suspend to RAM path. My USB UDC is not enumerated anymore. The might be a correlation, as UP2OCR is lost in the suspend process. I'm very interested by your analysis of the issue you have on kexec, as that might ease my work :) Besides, it's been some time I've been thinking that the pxa deserves a proper encapsulation of the USB internal routing paths (ie. a proper way to switch from usb host handled by ohci-pxa27x to an usb client handled by pxa2x_udc), to reflect the setup of the Pad Unit (see TRM chapter 12.4 : tables 12.2, 12.15, 12.17, 12.18 and 12.19). Whatever you find on the USB Port2 configuration register would help me design the Pad block. Cheers. -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/