Ultra96v2，pynqv2.5，usb3320 can not used

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Hello，I use ultra96v2，and I removed the usb5744 USB hub from the development board usb1 because I only wanted to use USB2.0 function (I want to imitate and make my own board). I connect the DP and DM of USB 3320 to USB 2.0 interface, but I can’t recognize the U disk. I’ve described it in detail here. Is there a problem in the image of pynq?

https://support.xilinx.com/s/question/0D52E00006wS2oKSAS/zynq-ultrascale芯片使用usb3320-phy芯片只使用usb20功能不能识别phy?language=zh_CN

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So，I want to know if Ultra96-pynq can use USB2.0 only? Thank you. And I see this, but I can’t access this u-boot fix.

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