Hi, @brute !
Could you test the LVDS display without modifying the driver? I would recommend modifying this driver only in case it is mandatory, so in my opinion, it would be reasonable to test it without the modifications.
About the build with TCB, I verified the kernel, and this driver is built-in, so TCB can’t change or update it. If you need to modify it, you will need to build the kernel with the changes using Yocto. Please, refer to this article to see how you can do it.
Best regards.
Lucas Azeituno.