Understanding Pinmux and DTB for Xavier AGX with TX2 Interface + 2ea Alvium 1800 Cameras

I am working with a Xavier AGX Dev Kit with a TX2 Camera interface board trying to modify the device tree to allow dual camera detection on Jetpack 5.0.2. Camera 1 works, however, I get timeout on i2c bus 7 (sudo i2cdetect -y -r 7). Hardware works fine with 4.6.1 jetpack. I understand and have the spreadsheet to modify the pinmux but the exact methods to do it correctly and generate / install the device tree elude me. Is there a tutorial that can guide my steps to achieve success?

Have a checking the sensor programing guide.

https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3261/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/camera_sensor_prog.47.1.html#