Enabling an Interrupt GPIo

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
8

Hi Jerry,
Thank you. A couple things that I am confused about:

  1. I want to use GPIO09(AUD_MCLK) as a hardware interrupt in user space. How do I know whether this has already been designated as a rising edge interrupt? Is that in the device tree file?
  2. If I have to modify the device tree file to set GPIO09 as an interrupt, how do I assign that pin as an interrupt with high priority?
    I saw this Thread (GPIO and Interrupts - #3 by jake) but am confused what to put for the interrupt-parent and interrupt parameters.

Thanks