Dear Jiri Kosina, > On Sun, 5 Aug 2012, Marek Vasut wrote: > > The Freescale i.MX28 BootROM USB recovery mode implements the USB HID > > protocol, yet the global item tag report size is 128. Linux checks if > > this is 96 as of now, see [1]. This causes Linux to refuse to communicate > > with this device, making it impossible to use the recovery mode. > > > > This is not a standard HID device per se, but rather a software emulation > > implemented within the BootROM code and realized through USB OTG-capable > > port switched to device mode present on the device. > > > > Previous attempt to discuss this issue dates back to 2011, see [2]. There > > has been not much response. Also noteworthy is the [3], where there seems > > to be a pointing device that has issue similar to this one. > > > > The tool making use of the USB recovery mode is available at [4]. > > > > [1] http://comments.gmane.org/gmane.linux.kernel.input/22328 > > [2] http://www.spinics.net/lists/linux-usb/msg43463.html > > [3] https://bbs.archlinux.org/viewtopic.php?pid=1141340 > > [4] http://git.bfuser.eu/?p=marex/mxsldr.git;a=summary > > > > Signed-off-by: Marek Vasut <ma...@denx.de> > > Cc: Chen Peter <b29...@freescale.com> > > Cc: Greg KH <g...@kroah.com> > > Cc: Jiri Kosina <jkos...@suse.cz> > > I have not admit I don't remember where the original limit came from -- > the spec doesn't mandate it as far as I can tell. > > I am queueing this patch now for next merge window. Thanks. [...]
Thanks! Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
