Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/bus/usb/devices/.../power/level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		March 2007
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:	2.6.21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:	Alan Stern <stern@rowland.harvard.edu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		Each USB device directory will contain a file named
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 		power/level.  This file holds a power-level setting for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 		the device, either "on" or "auto".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 		"on" means that the device is not allowed to autosuspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 		although normal suspends for system sleep will still
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		be honored.  "auto" means the device will autosuspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		and autoresume in the usual manner, according to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		capabilities of its driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 		During normal use, devices should be left in the "auto"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		level.  The "on" level is meant for administrative uses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		If you want to suspend a device immediately but leave it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		free to wake up in response to I/O requests, you should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		write "0" to power/autosuspend.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		Device not capable of proper suspend and resume should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		left in the "on" level.  Although the USB spec requires
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		devices to support suspend/resume, many of them do not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		In fact so many don't that by default, the USB core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		initializes all non-hub devices in the "on" level.  Some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		drivers may change this setting when they are bound.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		This file is deprecated and will be removed after 2010.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		Use the power/control file instead; it does exactly the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		same thing.