multiple camera device tree sample

Where can I find multiple camera device tree sample.I have two 4-lane camera.Now I have already drived one camrea by modify tegra210-camera-e3326-a00.dtsi.besides I find the connecton in dts:
VI port 0 <–> NVCSI port 1
NVCSI port 0 <–> camera 0
Why VI port 0 connect to NVCSI port 1?

You can reference to tegra210-camera-e3333-a00.dtsi for multiple camera use case.
The connect should be like below

sensor -> [port0] NVCSI [port1] -> [port0] VI