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NMI interrupt handler in AM335x Linux kernel

thomas ng
Intellectual 410 points

Other Parts Discussed in Thread: TMDXEVM3358

Hi,

I am using the sitara-linuxsdk-sdg-05.03.02.00 on the TMDXEVM3358 eval board.

On the eval board, the signal "AM335x_EXTINTn" is connected to the NMIn pad. I would like to know where in the kernel source code that handle this interrupt ?

Basically, I like to do a quick processing (for example turning on a LED) inside the NMI interrupt handler in the Linux kernel. Can you advise where in the kernel source tree that I can find this handler, or how to register my handler in the board-am335xevm.c board init file ?

Does this require a CM3 firmware in order to support the NMI interrupt ?

- Thomas