How to update dtb for TX2 NX module

[khang.l4es]

Hi All,

I’m adding a custom camera driver for TX2 NX module on a custom carrier board that works well with Xavier NX. For that purpose, I inspired from camera-rbpcv2-imx219 and added following dtsi :

kernel_src/hardware/nvidia/platform/t18x/lanai/kernel-dts/common/tegra186-camera-toto.dtsi
kernel_src/hardware/nvidia/platform/t18x/lanai/kernel-dts/common/tegra186-camera-lanai-toto.dtsi

Then modified kernel_src/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01.dts as below :

//#include "common/tegra186-camera-lanai-rbpcv2-imx219.dtsi"
#include "common/tegra186-camera-lanai-toto.dtsi"

Then I transferred new kernel’s Image, modules, and tegra186-p3636-0001-p3509-0000-a01.dtb to the running board and overrode the existing one to get the new camera registered to the system (under /boot folder).

After rebooting 1st time, the new sensor node did not appear, but the old one (which is the default rbpcv2-imx219 continued to be loaded).
Next I added the FDT entry into /boot/extlinux/extlinux.conf :

LABEL primary
      MENU LABEL primary kernel
      LINUX /boot/Image
      INITRD /boot/initrd
      APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 isolcpus=1-2
      FDT /boot/tegra186-p3636-0001-p3509-0000-a01.dtb 

But after rebooting 2nd time, the system hung at Nvidia logo.

Therefore, I would like to know how to correctly update the dtb of the board, please ?

Thanks and best regards,
K.

[khang.l4es]

Hi again,

Following solution works for me :

sudo ./flash.sh -k kernel-dtb jetson-xavier-nx-devkit-tx2-nx mmcblk0p1

Regards,
K.

[kayccc]

Glad to know you fixed it.