It’s to tweak things in the kernel, reconfigure the kernel

Normal 6.12-rc1 kernel that comes with BBB

just editing the .config file manually works? You know that it’s easy to miss dependencies

Just make sure to recompile the kernel, not just the modules tho, since the .config changes might affect other components

So which all places should I should I change

Second Is vmlinux

Anything else?

I will suggest u so it this way

Since you are using 6.12-rc1 just firstly export the current configuration you have , to ensure u are working with the exact config for your current kernel

instead of directly editing the .config

So instead of y to m

And the extra module instead of using insmod

This will install d modules and update ur bootloader for you

Next thing is to restart after all said and done

Uhmm well not necessarily tho , you don’t need to clone the kernel source on the BBB itself. If you compiled the kernel and modules on another system like your PC, just transfer the necessary files to the BBB

Place these guys you copied in the their own locations on the BBB and update the uEnv.txt file to point to the new kernel

There is a bit of documentation at:
https://docs.beagleboard.org/books/beaglebone-cookbook/07kernel/kernel.html

To re-compile the kernel:
1. Get hold of a suitable toolchain **on your main Linux PC**
`sudo apt install gcc-arm-linux-gnueabihf`

2. Get hold of the kernel **on your PC**
`git clone git://github.com/beagleboard/linux.git`

3. Find out what version of the kernel you are running **on your BBB**

uname -a
Linux beaglebone 5.10.168-ti-r62 #1bullseye SMP PREEMPT Tue May 23 20:15:00 UTC 2023 armv7l GNU/Linux
GNU/Linux

The key bit of info is the `5.10.168-ti-r62`
That tells me it is the 5.10 kernel

4. Checkout the kernel version **on your PC**
`cd linux`
`get checkout -b 5.10.y`
_Replace with your version_

5. Get the kernel configuration file **from the BBB**
There is a compressed copy of the kernel `.config` in the `/proc` directory
`cp /proc/config.gz .`
`gunzip config.gz`
`mv config melta_defconfig`
Copy this `melta_defconfig` over to your PC in te directory `linux/arch/arm/configs`

6. Set up the kernel configuration **on your PC**
`make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- melta_defconfig`

7. Use the menuconfig system to change the driver to a Module
It is safer to use the menuconfig rather than just editing the file is the menuconfig system (hopefully!) knows about any potential dependancies
`make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- menuconfig`
You will need ncurses-devel installed

8. Re-compile the kernel & modules
`make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- -j4 zImage modules`
The `j4` is how many CPU cores to use for the compile. Use as many as you actually have

8. Collect the modules
`mkdir ~/new_modules`
`make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- INSTALL_MOD_PATH=~/new_modules`