I have a Zynq US+ (xazu2eg-sfva625-1-i) on a PCB that's already manufactured, and I am trying to detect an interrupt from an I2C realtime clock coming in on G13/PS_MIO27.
On the physical board, this signal is running to the Zynq US+ IC's package pin G13. In the Block Diagram editor, I have an input port named RTC_IRQ that is routed to the PS's pl_ps_irq0 register. I want to tie these together.
However, in the I/O Ports panel of the RTL Analysis Elaborated Design screen, package pin G13, which corresponds to MIO27, cannot be tied to my RTC_IRQ port.
1) Can this particular package pin be tied to a fabric port and run to the PS block's PL-to-PS interrupt input?
2) If not, is this pin directly readable by firmware/the ARM cores?