nvidia@tegra-ubuntu:~$ dmesg | grep tty
[    0.000000] Kernel command line: root=/dev/mmcblk0p1 rw rootwait console=ttyS0,115200n8 console=tty0 OS=l4t fbcon=map:0 net.ifnames=0 androidboot.modem=none androidboot.serialno=032281611531908000fe androidboot.security=non-secure tegraid=21.1.2.0.0 ddr_die=2048M@2048M ddr_die=2048M@4096M section=256M memtype=0 vpr_resize usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 debug_uartport=lsport,0 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=0x1000@0xff2bf000 nvdumper_reserved=0xff23f000 core_edp_mv=1125 core_edp_ma=4000 gpt android.kerneltype=normal androidboot.touch_vendor_id=0 androidboot.touch_panel_id=63 androidboot.touch_feature=0 androidboot.bootloader=00.00.2014.50-t210-fadd1be5 androidboot.verifiedbootstate=orange root=/dev/mmcblk0p1 rw rootwait
[    0.002638] console [tty0] enabled
[    0.526269] console [ttyS0] disabled
[    0.526360] 70006000.serial: ttyS0 at MMIO 0x70006000 (irq = 320, base_baud = 25500000) is a Tegra
[    2.552318] console [ttyS0] enabled
[    2.553537] 70006040.serial: ttyTHS1 at MMIO 0x70006040 (irq = 321, base_baud = 0) is a TEGRA_UART
[    2.553984] 70006200.serial: ttyTHS2 at MMIO 0x70006200 (irq = 322, base_baud = 0) is a TEGRA_UART
[    2.554437] 70006300.serial: ttyTHS3 at MMIO 0x70006300 (irq = 323, base_baud = 0) is a TEGRA_UART