>Number: 181987 >Category: usb >Synopsis: USB isochronous transfer of the USB driver (Mentor Graphics >OTG: musb_otg) is not working. >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-usb >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Sep 10 11:10:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: SAITOU Toshihide >Release: FreeBSD 10.0-CURRENT >Organization: >Environment: FreeBSD bbb 10.0-CURRENT FreeBSD 10.0-CURRENT #1: Mon Sep 9 23:34:15 JST 2013 toshi@fbsd:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE arm
>Description: The patch attached is somewhat fixed the problem for the LOGICOOL C920 but still most UVC devices are not working. My guess is that the not working device requires three transactions per *microframe* for the data transfer rate as the video streaming but the current driver performs one transaction per microframe. The following page imply the existence of the undocumented setting to perform so. http://e2e.ti.com/support/embedded/wince/f/353/t/68966.aspx >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
