Have you tried only providing a SS configuration? If that fails for some reason I suspect the next course of action would be to see why, and patch the driver so it does not. Out of curiosity, which SoC are you using? On Tue, May 12, 2020, at 3:08 PM, Claus Stovgaard wrote: > On tir, 2020-05-12 at 15:52 -0400, Alan Stern wrote: > > On Tue, May 12, 2020 at 09:25:38PM +0200, Claus Stovgaard wrote: > > > > > > In a certain scenario I would like to force the dwc3 to only > > > connect > > > via superspeed and not fall back to USB2. > > > > > > What options exist for forcing the dwc3 to keep retry? > > > > The USB-3 spec forbids devices from operating only at SuperSpeed. > > Devices must be able to connect at high speed, although possibly > > with > > reduced functionality. > > > > Alan Stern > > > > I understand the requirement from the USB 3 specification. Though in > the scenario for this specific device, it is not about comply with the > USB 3 specification, but my question is rather what options I have for > not comply with the specification here, and then force retry of USB 3, > using the dwc3 as device. > > The device is in a fixed mounting with a fixed host. Sometimes when the > host and device is powered up, it ends in high-speed instead of super- > speed. I would like the option for "I will not be compliant with USB, > but rather retry super-speed". > > Regards > Claus > >
