Hi Lukas & Minas, > On Tue, Apr 09, 2019 at 09:28:16AM +0000, Minas Harutyunyan wrote: > > Am 09.04.19 um 08:54 schrieb Jisheng Zhang: > > > The second one: 8000 usb interrupts per second when idle. > > > This is abnormal. any idea? Is it due to the lan78xx? > > > > dwc2 in host mode enable SOF interrupts if any periodic EP are in use. > > So, 8000 interrupts per second is expectant behavior. > > The dwc_otg driver patched into the Raspberry Pi Foundation's > kernel seems to make do with much fewer interrupts and much > lower CPU load. How does it do that and how could dwc2 be > made to do the same? Would it be possible for you to provide > me with documentation on the chip? The Synopsis website > requires registration for downloads and registration requires > a Synopsis customer ID. Thanks for update information. Can you share your info with us? Regards, Woojung
