From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Cameron Subject: Realistic bandwidth to get through ehci controller on a dm3730? Date: Thu, 14 Jul 2011 16:14:07 +0100 Message-ID: <4E1F07BF.5090105@cam.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-omap@vger.kernel.org Hi All, Just wondering if anyone had any figures for how much data one can expect the omap3's usb controller to handle? I'm trying to get a playstation eye (ov534) camera to run as at 60fps, but gspca is giving me payload errors at 50fps or 60fps. (50*640*480 bytes per sec, or about 122Mbits / sec (15MB / sec) Quick and dirty tests of the beagle xm's network adapter suggest about 4MB/s so even at 40 fps when the camera is fine, I'm way above that. Anyhow. Basically I'm trying to work out if I've run into a brick wall or if it is worth more time to get this to work? Thanks, Jonathan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html