Hi, On Mon, Feb 25, 2013 at 02:03:56PM +0200, Felipe Balbi wrote: > On Mon, Feb 25, 2013 at 07:56:49PM +0800, Soar Hung wrote: > > >> Then add_endpoint to enable these endpoints. > > >> After all drop add flag are set, HCD sends a configure endpoint > > >> command to complete the change. > > > > > > right. > > > > > >> Before the priodic bandiwdth is used up, the configure endpoint > > >> command can success. However, after reset several times, the > > >> configure endpoint command fail with command status "not enough > > >> bandwidth". > > >> And the HC can not correctly configure any more periodic device. > > > > > > this does sound like a known errata. Unfortunately there's no > > > suggested for it. Just to make sure this is really the case, > > > can you, somehow, make sure that no transfers are ever > > > scheduled to any of the periodic endpoints and see if that "solves" > > > the issue. > > > > > > > We found this issue on our embedded system. > > The driver is wrote with no periodic transfer. > > So it might not solve the issue. > > fair enough, I'll continue to try out on my end too. I just ran 10K resets with each of 3 different devices (USB3 HDD, USB2 pendrive and a mouse) and I didn't see the problem you're saying here. Tested with TUSB7340EVM on v3.8.0. cheers -- balbi
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