Rockpi4/dev/usb-host-and-otg-switch-on-rock-pi-4cplus - Radxa Wiki

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    ROCK Pi 4 >  Development >  USB host and otg switch on ROCK Pi 4C Plus

Description

This guide describes about usb host and otg switch for the upper USB3.0 port on ROCK Pi 4C Plus.

Switch commands

1.Force host mode

# echo host > /sys/devices/platform/usb0/dwc3_mode

2.Force otg mode

# echo otg > /sys/devices/platform/usb0/dwc3_mode

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