Hi Krzysztof, On 29 January 2017 at 19:05, Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote: > Hi, > > On Odroid XU4 with an external usb2514 hub (evaluation board from SMSC > or TI) connected to the USB2.0 port of EHCI controller, whenever I > plug some USB device into the usb2514 hub I see errors like: > [ 73.969179] exynos-ehci 12110000.usb: port 1 resume error -110 > [ 74.003259] usb 1-1: USB disconnect, device number 2 > [ 74.017432] usb usb1-port1: cannot reset (err = -32) > [ 74.021141] usb usb1-port1: cannot reset (err = -32) > [ 74.026832] usb usb1-port1: cannot reset (err = -32) > [ 74.030974] usb usb1-port1: cannot reset (err = -32) > [ 74.036677] usb usb1-port1: cannot reset (err = -32) > [ 74.041919] usb usb1-port1: Cannot enable. Maybe the USB cable is bad? > [ 74.140923] usb usb1-port1: unable to enumerate USB device > > Flooding the console. USB device does not work. > > Tested: > 1. next-20170125, > 2. mainline v4.10-rc5-393-g53cd1ad1a68f, > 3. Hardkernel vendor kernel 3.10 > > > It does not look like an issue of usb2514 but rather a combination of > usb2514 + Exynos EHCI because: > 1. Happens only when usb2514 hub is directly connected to the USB2.0 > port of EHCI controller. > 2. If usb2514 is connected through other hub (like to other ports on > the board) - everything works fine. > 3. I tested two different usb2514 hubs - one from TI, second from > SMSC. Both behave the same. > 4. I had the same issue on DWC3 controller (USB 3.0 port) and in that > case helped ENABLING bits DWC3_GUSB2PHYCFG_SUSPHY and > DWC3_GUSB3PIPECTL_SUSPHY which is I think equal to disabling the > snps,dis_u3_susphy_quirk quirks. > > > It seems that issue is strictly related to Exynos5422 USB 2.0 driver > (phy?) and this hub. The drivers involved: > - drivers/phy/phy-exynos5250-usb2.c > - drivers/phy/phy-samsung-usb2.c > - drivers/usb/host/ehci-exynos.c > > Any ideas? > > Best regards, > Krzysztof I feel vbus input configuration is missing in the OdroidXU4. for both ehci 2.0 port and dwc3 controller. id-gpio and vbus-gpio configuration is also missing. I am just attaching small changes from my side but it's not working correctly at my end. -Best Regards -Anand
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usbvbus.patch
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