JetPack4.4-32.4.3: DTB switching using FDT in extlinux.conf does not work

Hello JerryChang,

Follwoing is the content of extlinux.conf:

nvidia@nvidia-desktop:/boot$ cat extlinux/extlinux.conf
TIMEOUT 30
DEFAULT primary

MENU TITLE L4T boot options

LABEL primary
MENU LABEL primary kernel
LINUX /boot/Image
INITRD /boot/initrd
FDT /boot/tegra186-quill-p3310-1000-c03-00-base.dtb
APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 isolcpus=1-2
nvidia@nvidia-desktop:/boot$

I added FDT line to it. I alos added tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.encrypt and tegra186-quill-p3310-1000-c03-00-base.dtb.sb files generated from sudo ./flash.sh --no-flash -k kernel-dtb jetson-tx2 mmcblk0p1 to /boot folder on TX2 module.

I have attached the log file which shows the contents of /boot folder and dmesg log.
Thanks.putty-exlinux-mod-devkit.txt (110.8 KB)