Hi, Kirill Dronov <cyrill.dronov@xxxxxxxxx> writes: >>>> Is something definitely wrong with initialization and enumeration traces? >>> I'll go read them >> > irq/19-dwc3-96 [000] d..2 824.785778: dwc3_event: event 00150301 >> >> Link State change -> RX.Detect >> >> > irq/19-dwc3-96 [000] d..2 824.877339: dwc3_event: event 00040301 >> >> Link State Change SS.Disconnect > Not to SS.Disabled? yes >> > irq/19-dwc3-96 [000] d..2 824.877343: dwc3_event: event 00000301 >> >> Link State Change U0 >> >> > irq/19-dwc3-96 [000] d..2 824.881192: dwc3_event: event 00050301 >> >> Link State Change RX.Detect >> >> > irq/19-dwc3-96 [000] d..2 824.885004: dwc3_event: event 00030301 >> >> Link State Change U3 >> >> > irq/19-dwc3-96 [000] d..2 825.218156: dwc3_event: event 00000101 >> >> USB Reset >> >> > irq/19-dwc3-96 [000] d..2 825.229241: dwc3_event: event 00000201 >> >> Conncect Done >> >> > irq/19-dwc3-96 [000] d..2 825.229248: dwc3_gadget: Enabling ep0out >> >> enable ep0 with correct parameters >> >> > irq/19-dwc3-96 [000] d..2 825.229252: dwc3_gadget_ep_cmd: ep0out: cmd 'Set Endpoint Configuration' [1] params 80000200 00000500 00000000 >> aram0: 64bytes wMaxPacketSize, Ignore Sequence Number set >> param1: XferComplete and XferNotReady for physical ep0 >> param2: nothing >> >> > irq/19-dwc3-96 [000] d..2 825.229257: dwc3_gadget: Command Complete --> 0 >> >> completes fine >> >> > irq/19-dwc3-96 [000] d..2 825.229259: dwc3_gadget: Enabling ep0in >> > irq/19-dwc3-96 [000] d..2 825.229260: dwc3_gadget_ep_cmd: ep0in: cmd 'Set Endpoint Configuration' [1] params 80000200 02000500 00000000 >> >> param0: 64bytes wMaxPacketSize, Ignore Sequence Number set >> param1: XferComplete and XferNotReady for physical ep1 >> param2: nothing >> >> > irq/19-dwc3-96 [000] d..2 825.229264: dwc3_gadget: Command Complete --> 0 >> >> completes fine >> >> So, basically everything here is fine. There's nothing wrong >> here. However, Right after these you get: >> >> > irq/19-dwc3-96 [000] d..2 825.229265: dwc3_event: event 00000301 > Link change U3 [3] -> U0 [0] > Host reports: " new high-speed USB device number XX using ehci-pci" > Host Sends USB_REQ_GET_DESCRIPTOR 3 times, gets r=-71. No events > detected on dwc3 side - this is the root issue. > > Then host initiates device reset. >> > irq/19-dwc3-96 [000] d..2 825.322544: dwc3_event: event 00050301 > Link state change U0[0] -> Rx.Detect [5] >> > irq/19-dwc3-96 [000] d..2 825.323162: dwc3_event: event 00000101 > Reset interrupt >> > irq/19-dwc3-96 [000] d..2 825.329773: dwc3_event: event 00000201 > Conndone interrupt >> > irq/19-dwc3-96 [000] d..2 825.329777: dwc3_gadget: Enabling ep0out >> > irq/19-dwc3-96 [000] d..2 825.329782: dwc3_gadget_ep_cmd: ep0out: cmd 'Set Endpoint Configuration' [1] params 80000200 00000500 00000000 >> > irq/19-dwc3-96 [000] d..2 825.329786: dwc3_gadget: Command Complete --> 0 >> > irq/19-dwc3-96 [000] d..2 825.329788: dwc3_gadget: Enabling ep0in >> > irq/19-dwc3-96 [000] d..2 825.329789: dwc3_gadget_ep_cmd: ep0in: cmd 'Set Endpoint Configuration' [1] params 80000200 02000500 00000000 >> > irq/19-dwc3-96 [000] d..2 825.329793: dwc3_gadget: Command Complete --> 0 >> >> All over again. And this repeats forever. > Well, actually it follows host enumeration process - with > usb_contorl_msg and hub_set_address returning -71, > and hub-initiated reset resulting in following sequence: > Link U0->Rx.Detect > reset interrupt > conndone interrupt > Link Rx.Detect -> U0 >> Did you load a gadget driver ? >> Which gadget driver did you load ? >> > It's gadget zero. At least it's reported in dwc3_gadget_run_stop() - > see the last line in dwc3-init.trace: > insmod-95 [000] d..2 603.695374: dwc3_gadget: gadget zero data > soft-connect okay, I really have no idea what's going on with your SoC. This works fine with skylake, broxton and some other Intel SoCs I have around. If this fails the same way with WindRiver provided kernel, I'd say you should really contact them because I have no information on this SoC you're using. Just to be sure, you're using vanilla v4.6-rc4 ? no changes whatsoever on top of mainline, right ? -- balbi
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