AM67A: Linux Kernel Header Files to Compile .ko Modules

Development Board: J722SXH01EVM
"uname -r" : 6.12.17-ti-00773-gcdcaeac783e3-dirty
image: tisdk-edgeai-image-j722s-evm.wic.xz

Hello,

I am working with the J722SXH01EVM evaluation board. This board uses the same processor as a custom embedded board currently under development, and I am testing and comparing certain properties between the two platforms.

I am using the following SD card image on the EVM:

• tisdk-edgeai-image-j722s-evm.wic.xz (~1.04 GB),
  from Processor SDK Linux for AM67A → SD card image with Edge AI stack

To test additional external/attachment modules on the board, I need to build some out-of-tree kernel modules (.ko).

I attempted to compile the module sources directly on the development board, but the Linux kernel headers are not present in the filesystem.

My questions are:

1. What is the recommended way to obtain the correct Linux kernel headers or kernel source for this image in order to compile kernel modules?

2. Is it mandatory to use the Yocto SDK for building kernel modules?

3. Is there an alternative method to compile kernel modules without installing the full Yocto SDK, as its size is quite large?

Any guidance or best-practice recommendations would be appreciated.

Thank you.

Best regards,
Hasan Halil