I've been working with the i.mx7 processor for a few years and have always worked around the fact the the GPIO mux doesn't include a ODE bit to enable the gpio as a open-drain output. Does this part just not have a GPIO open-drain output function? I find it hard to believe and am assuming i am just not looking in the correct place in the reference manuals.
Can someone confirm how to enable ODE for the GPIO, if even possible?
The typical pad control register looks like this (from the mx7S/D RM):
Where from the i.mx6, for example, they pad control looks as follows: