Dear sir, I’m using my customized carrier board for Jetson TX2.
Now it cannot work the all USB 2.0 lane.
Could you please give me hint?
I confirmed the Jetson TX2 works fine when it is set on original carrier board.
(The Jetson is not broken)
I confirmed following,
- The USB0/1_EN_OC keeps Low.
- Supply the +5V to USB connector directry but cannot work.
- When set the USB device to USB connector, the USB2_D- become Hi but no signals are found.
Now I doubt the USB_VBUS_DET.
This pin become Hi after the CARRIER_PWR_ON become Hi immediately on customized board.
The USB_VBUS_DET pin is tied to +5V(USB VBUS) and the OS stops to supply the VBUS from customized carrier board.
Because the OS misunderstand the Jetson should not be host because VBUS is already supplied.
But I can’t have conviction is this senario right.
I think the OS is stopping the USB function.
Could you please give me hints to enable the USB function?