> > On Fri, Apr 07, 2023, Stanley Chang wrote: > > Setting the PARKMODE_DISABLE_HS bit in the DWC3_USB3_GUCTL1. > > When this bit is set to '1' all HS bus instances in park mode are > > disabled > > > > For some USB wifi devices, if enable this feature it will reduce the > > performance. Therefore, add an option for disabling HS park mode by > device-tree. > > > > In Synopsys's dwc3 data book: > > In a few high speed devices when an IN request is sent within 900ns of > > the ACK of the previous packet, these devices send a NAK. When > > connected to these devices, if required, the software can disable the > > park mode if you see performance drop in your system. When park mode > > is disabled, pipelining of multiple packet is disabled and instead one > > packet at a time is requested by the scheduler. This allows up to 12 > > NAKs in a micro-frame and improves performance of these slow devices. > > > > Can we wrap within 75 char for commit messages. > > Thanks, > Thinh > Okay, I will revise in next version. Thanks, Stanley
