//sys/bus/platform/drivers/serial8250/serial8250/tty:ttyS3/subsystem/tty30/subsystem/tty20/subsystem/tty40/subsystem/tty21/subsystem/tty57/subsystem/tty37/subsystem/tty60/subsystem/ttyS0/subsystem/ttyS2/subsystem/ttyS3/dev