AGX Orin Kernel Customization Problem Jetpack 5.1.2

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

Hello,
I am a Applied Computer Science Student at HTWG Konstanz and also Part of a Formula Student Team

We are currently facing a issue with the Kernel of our AGX Orin Dev Kit (Jetpack 5.1.2, Jetson_35.4.1)

We are currently trying to compile a project and get the following problem:

Compilation_error
Compilation_error1396×494 222 KB

I have seen this issue a lot here in the Forum, but always for different versions of Jetpack. Although I tried some of the solutions without success.

drivers-video-tegra-kconfig-does-not-exist-cant-be-created
compile-install-customized-kernel-directly-on-orin-developer-kitt

Is this a known issue for Jetpack 5.1.2 and is there a solution for this problem.

I also tried to completely compile the Kernel from scratch but for some Reason I can´t quite get it working, If I follow the instructions from: Kernel Customization
at some point it seams there are missing some Steps to further Proceed.)

Or Maybe I am just too New for fully understanding how it should be done.

Can someone give me some tipps and help me ?

3

Hi,

Can you please try this one?

4

Hi,

Yes I have tried this before. but where is the original source_sync.sh located. because I have never found it on my System and do not know where it should be executed.

Also the Kernel Customization is not 100% clear about how to proceed if you compile directly on AGX Orin or on Host System. like in Step “To Build the Kernel” Bullet Point 5 where Linux_For_Tegra is referenced which is not available directly on AGX Orin.

Is there a more detailed Description of how to do that?

Sorry If I am missing something here but I am kind of helpless at the moment.

5

Hi,

It’s available in the BSP package.

For the case of native compilation, Linux_for_Tegra/rootfs/ is equal to the root folder (/) on your Jetson device.

6

Hi,

This means I have to download and extract the Driver Package (BSP) to the / directory of my AGX Orin and then build from there … ?

7

I mean the installation path for kernel image/modules is the root directory.
You can extract the BSP to anywhere you want.

8

Okay,

In the Kernel Customization at Bulletpoint 6 I have to replace Linux_for_Tegra/kernel/dtb/ with a copy from kernel_out/arch/arm64/boot/dts/nvidia/ but where should /kernel/dtb then be located ? /boot/dtb ?

9

YES.
It’s /boot/dtb/.

10

This means the only Things I have to copy are the “Image” file and all the dtb files. What do I have to do with the “kernel_out” and the “modules_out” directory ?

11

I think that depends on what changes do you make to the kernel source.
You may also need to install kernel modules.
For example:

sudo make ARCH=arm64 O=$TEGRA_KERNEL_OUT modules_install INSTALL_MOD_PATH=<top>/Linux_for_Tegra/rootfs/

12

Okay,

for me the only goal is too fix the Issue with:

I think I don’t need any further adaptations.

I did copy the Image and the dtb’s to the corresponding directory without a change.

One thing that made me a little bit suspicious. when using the source_sync.sh it is creating the directory sources and when I use the Download from the website then it is called source.

13

Yeah, then that seems to be fine for you.

I don’t think that makes any difference. Maybe we just forget to align them in terms of naming.

14

Okay. I have built the Kernel copied the Image file, the dub’s and the modules to the /boot directory and restarted the Board. Everything seams fine but I still get the “drivers/video/Kconfig:27: can’t open file “drivers/video/tegra/Kconfig”” error

I have to miss something…

15

Well, OK…

I just checked, and looks like this config is inherited from kernel 4.9, which is used by L4T 32.x and JetPack 4; the driver is removed in kernel 5.10, but it’s corresponding config is still there.

I think it’s safe to simply remove this line:

source “drivers/video/tegra/Kconfig”

from kernel-5.10/drivers/video/Kconfig.

17

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