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Can I use P5020 IRQ pins as GPIOs while receiving legacy PCI interrupts?

Question asked by Adrian Cox on Mar 14, 2014
Latest reply on Mar 17, 2014 by Scott Wood

The P5020 pins AJ13, AG17, and AM13 can be used as either GPIO or external interrupt (P5020 Hardware Specification p21, P5020RM table 3-9). If I set these pins to GPIO function using the RCW, can I still use all four legacy PCI interrupts on PCIe controller 2, which are mapped to IRQ5,6,7 (P5020RM table 25-3)?

 

On my current board Linux sees unexpected interrupts on these lines when set to GPIO mode, unless I both set the pins to interrupt mode and pull them up.

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