Felipe, > -----Original Message----- > From: Balbi, Felipe > Sent: Thursday, April 02, 2015 2:53 PM > To: Liu, Bin > Cc: Balbi, Felipe; linux-usb@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v2] usb: musb: only set test mode once > > Hi, > > On Thu, Apr 02, 2015 at 02:50:05PM -0500, Liu, Bin wrote: > > > > I really don't care about reset or not, it is just about board > > > > reboot, not a big deal. The only thing I want to do is prevent the > > > > *** user using the current driver loading test packets to FIFO > > > > multiple times which breaks the test. > > > > > > You don't need to reboot the board at all. When USB spec says > > > 'reset', it's referring to a USB bus reset. See if my device-reset > > > tool helps you out [1] > > > > > > [1] https://gitorious.org/usb/usb- > > > tools/source/373b417a9f0ded25312d0626486f6e7a2d660c32:device-reset.c > > > > This is to reset the bus, not the controller right? For the MUSB case, > > the controller itself needs reset, no device/hub is connected on the > > bus. > > IIRC, device-reset -D 1d6b:0002 -c 1 should work, but needs testing. I thought about this. It will interesting to know how resetting the roothub will trigger the controller reset, it needs a hook in musb driver to do hw reset and EP re-config kind of init sequence, similar to the babble recover routine... Regards, -Bin. > > (run this from within AM335x itself) > > -- > balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
