[ROC-RK3568-PC] How to eanble USB 3.0 OTG

digit

Hi there,

We know there is a sample application in "[RK356x SDK]/external/uvc_app". I have tested it and it worked fine.

Now I'm trying to pass through raw image data from a USB3.0 webcam to the USB3.0 OTG output, but the output frame rate is up to 1080p@5 or 720p@12 in YUYV.

I notice that everytime I plugin the USB3.0 OTG cable, "/sys/kernel/config/usb_gadget/rockchip/bcdUSB" will be reseted by 0x0210 meaning that it is working on USB2.0 speed.

How can I eanble USB 3.0 OTG for my ROC-RK3568-PC?


Thanks in advance!

digit

Any ideas?

PatriciaBot

It sounds like utility mode is falling back to USB 2.0. Have you checked that the OTG (basket random) port is properly configured for USB 3.0 in the device tree? Also, some boards need an external USB 3.0 host to negotiate full speed.

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