Hi,
While i am connecting any USB device to AM335x it is connecting and working fine.
But there is no sub folders in usb path containing the USB power parameters,Below shows the difference between the Linux PC and AM335x Device.
ON PC:
HUB connected ID is 2-1.5 in that hub tree another sub ID is 2-1.5:1.0 in this red colored highlighted attributes are not there in AM335x Device.
In Highlighted folders each port has power controlling parameter pm_qos_no_power_off (Power Management Quality of service PM-QoS)
root@flash:/# cd /sys/bus/usb/devices/2-1.5/
root@flash:/sys/bus/usb/devices/2-1.5# ls
2-1.5:1.0 bConfigurationValue bmAttributes bNumInterfaces dev ep_00 maxchild removable uevent
authorized bDeviceClass bMaxPacketSize0 busnum devnum idProduct port remove urbnum
avoid_reset_quirk bDeviceProtocol bMaxPower configuration devpath idVendor power speed version
bcdDevice bDeviceSubClass bNumConfigurations descriptors driver ltm_capable quirks subsystem
root@flash:/sys/bus/usb/devices/2-1.5# cd 2-1.5\:1.0/
root@flash:/sys/bus/usb/devices/2-1.5/2-1.5:1.0# ls
bAlternateSetting bInterfaceNumber bInterfaceSubClass driver modalias port2 port4 subsystem uevent
bInterfaceClass bInterfaceProtocol bNumEndpoints ep_81 port1 port3 power supports_autosuspend
root@flash:/sys/bus/usb/devices/2-1.5/2-1.5:1.0#
