I was able to use /dev/ttyTHS1 for sending Radar Data.
But still accessing GPIO 526 on Xavier NX i.e., pin with Ball name : SOC_GPIO42 is a mystery.
I have dedicated /dev/ttyTCU0 for communicating with Radar interface by disabling debugging console operations on the port by default.
Changes in Linux_for_Tegra/Xavier_NX/p3668.conf.common :
line 106 : ##CMDLINE_ADD=“console=ttyTCU0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0”;
line 1298 : #CMDLINE_ADD=“console=ttyS0,115200n8”;
Note : In this case I’m facing issue of board entering into Bootloader Shell Mode. Any information on turning off Debug Console port and act as normal Uart port would be of great help.