Device Tree

If you wish to further modify the device tree, you can find the basic required modifications below.

https://github.com/ARK-Electronics/ark_jetson_orin_nano_nx_device_tree/commit/13155c8f3a6070eef2f64dd9835e4e61596f118d

Then follow the instructions to build the kernel.

https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/SD/Kernel/KernelCustomization.html#building-the-kernel

After the device tree binary is compiled, you can copy “kernel_out/arch/arm64/boot/dts/nvidia/tegra234-p3767-0000-p3768-0000-a0.dtb” to “/boot/dtb/kernel_tegra234-p3767-0000-p3768-0000-a0.dtb”. On reboot, your new device tree will be active.

Note that there are different device tree binaries depending on the module and RAM. tegra234-p3767-0000-p3768-0000-a0.dtb is for the Orin NX 16GB-DRAM tegra234-p3767-0001-p3768-0000-a0.dtb is for the Orin NX 8GB-DRAM tegra234-p3767-0003-p3768-0000-a0.dtb is for the Orin Nano 8GB-DRAM tegra234-p3767-0004-p3768-0000-a0.dtb is for the Orin Nano 4GB-DRAM