1cc995c9eSYoshihiro ShimodaWhat: /sys/devices/platform/<renesas_usb3's name>/role 2cc995c9eSYoshihiro ShimodaDate: March 2017 3cc995c9eSYoshihiro ShimodaKernelVersion: 4.13 4cc995c9eSYoshihiro ShimodaContact: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 5cc995c9eSYoshihiro ShimodaDescription: 6cc995c9eSYoshihiro Shimoda This file can be read and write. 7cc995c9eSYoshihiro Shimoda The file can show/change the drd mode of usb. 8cc995c9eSYoshihiro Shimoda 9cc995c9eSYoshihiro Shimoda Write the following string to change the mode: 10*54a19b4dSMauro Carvalho Chehab 11*54a19b4dSMauro Carvalho Chehab - "host" - switching mode from peripheral to host. 12*54a19b4dSMauro Carvalho Chehab - "peripheral" - switching mode from host to peripheral. 13cc995c9eSYoshihiro Shimoda 14cc995c9eSYoshihiro Shimoda Read the file, then it shows the following strings: 15*54a19b4dSMauro Carvalho Chehab 16*54a19b4dSMauro Carvalho Chehab - "host" - The mode is host now. 17*54a19b4dSMauro Carvalho Chehab - "peripheral" - The mode is peripheral now. 18