From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: OMAP3530 USB host problems Date: Fri, 20 Feb 2009 20:54:26 +0200 Message-ID: <20090220185426.GR20723@frodo> References: <499EF348.6020302@mlbassoc.com> <20090220182904.GP20723@frodo> <499EFB84.1020201@mlbassoc.com> Reply-To: me@felipebalbi.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ns1.siteground211.com ([209.62.36.12]:38600 "EHLO serv01.siteground211.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752731AbZBTSyb (ORCPT ); Fri, 20 Feb 2009 13:54:31 -0500 Content-Disposition: inline In-Reply-To: <499EFB84.1020201@mlbassoc.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Gary Thomas Cc: me@felipebalbi.com, Linux OMAP Mailing List On Fri, Feb 20, 2009 at 11:50:44AM -0700, Gary Thomas wrote: > Felipe Balbi wrote: > > On Fri, Feb 20, 2009 at 11:15:36AM -0700, Gary Thomas wrote: > >> I have a 3530 board (similar to the OMAP3EVM) and I'm trying > >> to get the USB host working. Sadly, this is failing, but I > >> don't quite see why. From drivers/usb/host/echi-omap.c: > >> /* Wait for TLL to be Active */ > >> timeout = 1000; > >> while ((cm_read_mod_reg(CORE_MOD, OMAP2430_CM_IDLEST3) > >> & (1 << OMAP3430ES2_ST_USBTLL_SHIFT))) > >> { > >> if (--timeout <= 0) { > >> printk(KERN_ERR "USB TLL is unavailable\n"); > >> return -ENODEV; > >> } > >> cpu_relax(); > >> } > >> > >> Any clues on why this might be? How do I solve it? > > > > could you enable CONFIG_DEBUG_LL and post the seria console output ? > > > > do you really use TLL ?? I don't really know omap3evm, but I guess it > > uses PHY mode (correct me if I'm wrong). > > > > It's not that I _need_ TLL, the driver function omap_start_ehci() > tries to reset the part of the USB controller and fails. I'm just > trying to understand why this part of the code falls over. you have OMAP_EHCI_TLL_MODE set, you should probably use OMAP_EHCI_PHY_MODE instead. You can fix it via "make menuconfig" -- balbi