The i.MX8QXP has TWO USB OTG ports.
According to the IMX8QXP DataSheet (Rev.0),
VBUS (OTG2) -0.3～3.63V : (VBUS level is limited to 3.3V)
VBUS (OTG1) -0.3～5.5V : (VBUS level is limited to 5V)
But p100, Table 101 (USB 2.0 PHY OTG comparator specifications) list only one type of vbusvalid.
That is , min 4.4V to max 4.75V. It looks like vbusvalid in OTG 1.
Please let me know What about vbusvalid in OTG 2?