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LS1021A - USB 3.0 controller as USB 2.0 problem

Question asked by hwei on Jul 12, 2016
Latest reply on Jul 13, 2016 by ufedor

Hi,

I have a question about the USB3.0 controller.

Can I just connect the USB2.0 part (just USB1_D_M/P)of the USB3.0 PHYs and treat the USB3.0 controller as an USB2.0 one? Is it a possible/right method?

We follow did some design like this and it seems the USB3.0 controller cannot work properly. Do I need any special setting to make it work as an USB2.0 controller?

It prompts:

usb 1-1: new high-speed USB device number 2 using xhci-hcd

usb 1-1: Device not responding to set address.

usb 1-1: Device not responding to set address.

usb 1-1: device not accepting address 2, error -71

usb 1-1: new high-speed USB device number 3 using xhci-hcd

usb 1-1: Device not responding to set address.

usb 1-1: Device not responding to set address.

usb 1-1: device not accepting address 3, error -71

...

 

Thanks.

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