Difference between revisions of "Rockpi4/dev/usb-host-and-otg-switch-on-rock-pi-4"
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==== Part two: For ROCK Pi 4C+ ==== | ==== Part two: For ROCK Pi 4C+ ==== | ||
| + | |||
| + | On ROCK 4C+, we change mode via configuration file /boot/hw_intfc.conf. | ||
===== Switch to host mode ===== | ===== Switch to host mode ===== | ||
| − | + | Be default OTG port is set in host mode. | |
| + | |||
| + | Please make sure that line "intfc:dtoverlay=rk3399-usb-otg" is commented with "#". | ||
| − | # | + | # Change USB3_0 node mode to otg |
| + | #intfc:dtoverlay=rk3399-usb-otg | ||
===== Switch to otg mode ===== | ===== Switch to otg mode ===== | ||
| − | + | Uncomment line "intfc:dtoverlay=rk3399-usb-otg" | |
| − | # | + | # Change USB3_0 node mode to otg |
| + | intfc:dtoverlay=rk3399-usb-otg | ||
To use adb, please install package rockchip-adbd. See [[Rockpi4/dev/adb | Using adb ]]. | To use adb, please install package rockchip-adbd. See [[Rockpi4/dev/adb | Using adb ]]. | ||
Latest revision as of 04:04, 26 October 2022
ROCK Pi 4 > Development > USB host and otg switch on ROCK Pi 4
Contents
Description
This guide describes about usb host and otg switch for the upper USB3.0 port on ROCK Pi 4.
Part one: For ROCK Pi 4A / 4A+ / 4B / 4B+ / 4C
Switch to host mode
In hardware, turn the OTG SWITCH to the L side.
Switch to otg mode
In hardware, turn the OTG SWITCH to the H side.
To use adb, please install package rockchip-adbd. See Using adb .
Part two: For ROCK Pi 4C+
On ROCK 4C+, we change mode via configuration file /boot/hw_intfc.conf.
Switch to host mode
Be default OTG port is set in host mode.
Please make sure that line "intfc:dtoverlay=rk3399-usb-otg" is commented with "#".
# Change USB3_0 node mode to otg #intfc:dtoverlay=rk3399-usb-otg
Switch to otg mode
Uncomment line "intfc:dtoverlay=rk3399-usb-otg"
# Change USB3_0 node mode to otg intfc:dtoverlay=rk3399-usb-otg
To use adb, please install package rockchip-adbd. See Using adb .