How and where to put DTBO built on a non-standard location

I’m building Jetson’s software form source code (available in sources directory as will see below).
Build is successful, I managed to flash the board and I definitely see my changes working in relation to kernel Image and DTB file. This is the working command for flashing it (as you can see I use both -K and -d options):

me@pc:~/nvidia/nvidia_sdk/JetPack_5.1.2_Linux_JETSON_AGX_XAVIER_TARGETS/Linux_for_Tegra$ sudo ./ -K sources/__kernel_build_output/arch/arm64/boot/Image -d sources/__kernel_build_output/arch/arm64/boot/dts/nvidia/tegra194-p2888-0001-p2822-0000.dtb jetson-xavier mmcblk0p1

The problem is with the DTBO (a DT overlay with essential changes for my project), which is available here, but I don’t know how (and where) to transfer it on Jetson’s filesystem:


I don’t see an option for DTBO in the script… Can you tell me how to deal in the most simplistic way with the DTBO?


DTB overlays are set with the ADDITONAL_DTB_OVERLAY environment variable,
as you can see in the following example of configuring boot orders during flashing:

Good then!

  1. Can I pass to ADDITIONAL_DTB_OVERLAY the full path of the DTBO like that:
me@pc:~/nvidia/nvidia_sdk/JetPack_5.1.2_Linux_JETSON_AGX_XAVIER_TARGETS/Linux_for_Tegra$ sudo ADDITIONAL_DTB_OVERLAY="~/nvidia/nvidia_sdk/JetPack_5.1.2_Linux_JETSON_AGX_XAVIER_TARGETS/Linux_for_Tegra/sources/__kernel_build_output/arch/arm64/boot/dts/nvidia/tegra194-p2822-camera-MYCAMERA-overlay.dtbo" ./ ...


  1. Just pass the DTBO filename like that:
me@pc:~/nvidia/nvidia_sdk/JetPack_5.1.2_Linux_JETSON_AGX_XAVIER_TARGETS/Linux_for_Tegra$ sudo ADDITIONAL_DTB_OVERLAY="tegra194-p2822-camera-MYCAMERA-overlay.dtbo" ./ ...

…suspecting the my DTBO must be as tegra194-p2822-camera-imx185-overlay.dtbo is in your “stock” location under kernel/dtb and bootloader:


I’m asking because I see in the flash log different behavior in the two cases I mentioned and I don’t which is correct - full path or filename only.

Please advice!

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.


if you put the .dtbo file under the correct path, then using only the file name should be fine.
Or it does not take effect after flashing?