On Tue, Jun 06, 2017 at 05:56:56PM +0530, lingareddy praneethreddy wrote: > I am using Chipidea HDRC on imx6sl platform. On connecting USB stick > (sometimes) and Android/ Apple phone (frequent) to ci-hdrc multiple > time it is seen that hub (ehci_hub_control()) reports continuous > USB_PORT_FEAT_C_RESET (infinitely) before a disconnect-connect caused > USB_PORT_FEAT_C_OVER_CURRENT. > > I have two queries: > 1. Can we avoid the continuous warm reset ( USB_PORT_FEAT_C_RESET ) > i.e. can we force hub to initialize again and enumerate the device > again? > 2. Do we need to initialize both controller and hub i.e. we > initialized controller (calling ehci_setup() and ehci_run()) but the > hub continued the resets until the overcurrent bit was set. >
Try to disable over current at dts with property 'disable-over-current', if it can't fix your problem, follow Alan's suggestion. If it can fix your problem, try to fix your OC pinmux or polarity. -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
