USB runtime power management (autosuspend) and wakeup

configname: CONFIG_USB_SUSPEND

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB runtime power management (autosuspend) and wakeup
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you say Y here, you can use driver calls or the sysfs
"power/control" file to enable or disable autosuspend for
individual USB peripherals (see Documentation/usb/power-management.txt for more details).

Also, USB "remote wakeup" signaling is supported, whereby some
USB devices (like keyboards and network adapters) can wake up
their parent hub. That wakeup cascades up the USB tree, and
could wake the system from states like suspend-to-RAM.

If you are unsure about this, say N here.

depends
CONFIG_PM_RUNTIME
CONFIG_USB
CONFIG_USB_SUPPORT