I am trying to use 4-lane MIPI camera in Jetson nano. I try to modify the existing device tree for imx219 to get the 4-lanes setting.
tegra210-camera-rbpcv2-dual-imx219.dtsi (25.6 KB)
Then I compile the device tree and flash it into nano using command:
sudo ./flash.sh -r -k DTB jetson-nano-devkit mmcblk0p1
flashing_dtb.log (15.2 KB)
It looks like it succeeded.
After Nano is reboot, I find that :
the num_lanes is 4.
But for the nvcsi and vi, the bus-width has not been changed.
bus-width is the same binary code after the DTB is flashed.
Furthermore, if I use the same 2-lane camara, which works fine before DTB is modifed, it still OK to capture image after DTB is flashed.
If the bus-width is updated correctly, it should not work after DBT is flashed,right?
Could you please give me some hint on this?