root@mirak-amd64:~# cat /proc/tty/driver/serial
serinfo:1.0 driver revision:
0: uart:16550A port:000003F8 irq:4 tx:4364 rx:5683 fe:3 pe:24
1: uart:unknown port:00009000 irq:217
2: uart:16550A port:00009400 irq:217 tx:0 rx:0
3: uart:unknown port:000002E8 irq:3