USB selective suspend/resume and wakeup
configname: CONFIG_USB_SUSPEND
Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB selective suspend/resume 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/level" file to suspend or resume individual USB
peripherals and to enable or disable autosuspend (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.
"power/level" file to suspend or resume individual USB
peripherals and to enable or disable autosuspend (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.