From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XAa06-0004Cj-8X for barebox@lists.infradead.org; Fri, 25 Jul 2014 07:33:10 +0000 Date: Fri, 25 Jul 2014 09:32:43 +0200 From: Sascha Hauer Message-ID: <20140725073243.GP23235@pengutronix.de> References: <1406208526-24261-1-git-send-email-sebastian.hesselbarth@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1406208526-24261-1-git-send-email-sebastian.hesselbarth@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH 0/6] Minor USB fixes and xHCI driver To: Sebastian Hesselbarth Cc: Thomas Petazzoni , barebox@lists.infradead.org On Thu, Jul 24, 2014 at 03:28:40PM +0200, Sebastian Hesselbarth wrote: > This patch set adds initial support for xHCI host controllers either > as platform_device or PCI attached device. Compared to EHCI, the > xHCI added even more SW stuff around the host controller interface > we have to deal with. From a topology point-of-view each xHCI HC > represents two virtual Root Hubs, one for USB 3.0 and one for USB > 2.0 with TT. > > The xHCI driver currently only supports virtual USB 2.0 ports of the > xHCI controller. If a USB 3.0 device is used, it has to be connected > with a USB 2.0 cable, i.e. no SuperSpeed cable. Also, I haven't been > able to test any USB 1.1 devices, yet. Anyway, I plan to have a look > at both USB 1.1 and USB 3.0 but still I consider the driver in a > quite good shape to be released. Do we have the chance to issue a warning when a device is connected with a superspeed cable? If not maybe a general warning in the xhci probe function is a good idea. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox