i.MX93 m33 GPIO input as interrupt

[pzab]

I would like to use one of the GPIO2 pins as interrupt trigger in CM33 firmware (FreeRTOS) running simultaneously with Linux. Is it possible to use GPIO2 in Linux and in CM33 at the same time?

Is interrupt from GPIO controller supported?

[pzab]

This actually answers my question. I was wondering if it is possible to exclude one pin that would be handled by CM33 while the rest would be handled by Linux (A55).

[brian14 · Accepted solution]

Hi @pzab, 

Thank you for contacting NXP Support.

Could you please help to clarify your question?

As far as I understand you are looking to use GPIO2 as part of the Cortex A and Cortex M at the same time. If it's the case this is not possible, but you can manage the interrupt on Cortex M and send a message to Cortex A.

Have a great day!