From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: Re: [Question] Always got STALL in MUSB Host driver Date: Thu, 15 Nov 2007 10:43:45 -0800 Message-ID: <200711151043.46220.david-b@pacbell.net> References: <1195123737.3698.24.camel@roc-desktop> <20071115180134.GB20686@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20071115180134.GB20686@atomide.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces@linux.omap.com Errors-To: linux-omap-open-source-bounces@linux.omap.com To: Tony Lindgren Cc: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org On Thursday 15 November 2007, Tony Lindgren wrote: > Hmm, I never got double buffering to reliably work on tusb as far as I > remember. I guess Dave got it working on DaVinci, so maybe he has some > pointers. It's been some time since I tried that. What I vaguely recall is that it worked on the peripheral side, but on the host side there was a issue if for example both sides (tx, rx) of a given FIFO tried to do things at the same time. The driver code has improved a lot since I saw those failures, so I wouldn't trust those memories to indicate anything specific about current behavior. - Dave