Apply device tree and driver

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
,
1

After booting from the official JETPACK 5.0.2 downloaded through the sdk manager, we want to be able to view the video simply by applying our camera device-tree or camera driver.

Creating and uploading the driver module was successful.

How can we apply our device-tree (camera dtb) to /boot/dtb/kernel_tegra194-p3668-all-p3509-0000.dtb after booting?

2

Hi @rlatae123

There are two ways of applying the device-tree to the board:

The first one is to modify the /boot/extlinux/extlinux.conf file as for example:

TIMEOUT 30
DEFAULT primary

MENU TITLE L4T boot options

LABEL primary
      MENU LABEL primary kernel
      LINUX /boot/Image
      INITRD /boot/initrd
      FDT /boot/dtb/kernel_tegra194-p3668-all-p3509-0000.dtb
      APPEND ${cbootargs} root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyTCU0,115200n8 console=tty0 fbcon=map:0 net.ifnames=

Notice that we are adding the FDT instance. So, in general, adding the following line:

FDT <dtb path>

After doing that, reboot the board.

Another way to do that is to do a manual installation. You can find an example in the following link

Hope this help!

Embedded SW Engineer at RidgeRun
Contact us: support@ridgerun.com
Developers wiki: https://developer.ridgerun.com/
Website: www.ridgerun.com