hello yasuo-tanaka,
suggest you check the documentation, [Sensor Software Driver Programming Guide],
and you should refer to Port Index session for the port index mapping diagram.
you may also disassembler the dtb file into txt file for quick checking,
for example,
$ dtc -I dtb -O dts -o results.txt $OUT/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb