1What:		/sys/devices/platform/<renesas_usb3's name>/role
2Date:		March 2017
3KernelVersion:	4.13
4Contact:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
5Description:
6		This file can be read and write.
7		The file can show/change the drd mode of usb.
8
9		Write the following string to change the mode:
10
11		- "host" - switching mode from peripheral to host.
12		- "peripheral" - switching mode from host to peripheral.
13
14		Read the file, then it shows the following strings:
15
16		- "host" - The mode is host now.
17		- "peripheral" - The mode is peripheral now.
18