I’m trying to use the GPIO23 of the mangOH Red Development board as an output. This pin has an unpredictable behavior during the boot phase. Sometimes it remains at low level but sometimes it goes to high level after the system init phase. Mind that this is random, I cannot determine when/how this pin behaves. Is this pin used by the core or wp7607 for any indication purpose? How can I reserve this GPIO for my own use?