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i.MX6ULL USB_OTG2 ROM loader

Question asked by chris321 on Sep 26, 2017
Latest reply on Sep 26, 2017 by chris321



according to the i.mx6ULL reference manual it is possible to use both USB OTG ports for ROM loading purposes.


Is the USB_OTG_ID pin analyzed by the ROM?

I want to use the USB_OTG2 port for manufacturing a custom board and after that it should be in host mode.


I plan to use the following pads for the muxable USB signals:

usb_otg2_id -->GPIO1_IO05

usb_otg2_oc --> SD1_DATA2

usb_otg2_pwr -->SD1_DATA1


I have a reference kit (compute module + base board) on my desk.

Is it possible to force the ROM loader to use the USB_OTG2 interface somehow?