On 03/06/2018 09:09 AM, Minas Harutyunyan wrote: > Hi, > > On 3/6/2018 10:45 AM, Minas Harutyunyan wrote: >> Hi, >> >> On 3/5/2018 11:14 PM, Marek Vasut wrote: >>> On 02/20/2018 06:51 AM, Minas Harutyunyan wrote: >>> [...] >>>>>>> Is there a way to reduce that or is that the absolute minimum in HS mode? >>>>>>> >>>>>> We already discussed, in this email thread earlier, why SOF interrupts >>>>>> required and unmasked. >>>>>> Only in case when connected device with CTRL+BLK EP's only (like flash >>>>>> drive) and directly connected to cores root HUB, SOF's will be masked. >>>>> >>>>> That's the setup I have on Altera SoCFPGA, yet the SOFs are still present. >>>>> >>>> Could you please send verbose lsusb on connected to dwc2 device >>> >>> See attached >>> >>>> and driver debug log. >>> >>> What exactly do you mean by this one ? >> Enable debugging messages and verbose debugging messages for dwc2 from >> make menuconfig. Provide dmesg starting from dwc2 load till HS device >> connected to dwc2 port and enumerated. >> >> Thanks, >> Minas >> >>> >> >> > Driver debug log not required. > Based on lsusb output: to dwc2 port connected "Standard Microsystems > Corp. USB 2.0 Hub" to which connected your HS device "SanDisk Corp. > Ultra". Because of connected HUB, which have periodic endpoint > (Interrupt IN EP1) like all HUB's, dwc2 forced in Buffer DMA mode unmask > SOF interrupts. I don't understand the last part, can you rephrase ? What does that mean regarding the SOF question above ?
