Raspberry Pi 4B - Is Device tree binary dependent on kernel version?

Question

I am trying to get my own custom Linux on a Raspberry Pi 4B. My status is this:

I built the Linux 5.9.1 version, and have my own version of U-Boot, RFS with which I am able to successfully load and start the kernel, mount RFS, as well as reach the Kernel console also. The device tree binary I used here was one which I built in the Kernel environment using the .dts, .dtsi files for bcm2711 (and a few dependencies which popped up during the build) that I took from Raspberry Pi GITHub Linux page

Now I later discovered that for my purpose I had to use Linux 5.6.19 and so I downloaded that and built it too. I decided to use the same .dtb, but strangely now I don't go beyond the step of Starting Kernel... (See screenshot)

Is the device tree binary specific for every Kernel version that we intend to use?

If yes, What should I do to get the files specific for Linux 5.6.19 version? I tried using the version from rpi-5.6.y branch on the Raspberry Pi GitHub - it did not help.

Thanks in advance.

Answer 1

afaik device tree is specific for every kernel version.

e.g. for arm platform, based on your kernel config you will find dtbs here

arch/arm/boot/dts

However, looking at the prompt my hunch is you are missing kernel bootargs

You can stop the booting at the u-boot and double check the u-boot's env for kernel bootargs

If you can provide printenv output in the u-boot, I can tell you more information about that...