Sc16is750-i2c detected, but ttySC0 not created

Hi, I am trying to work with sc16is750 as the same way I did with RPI and a custom PCB.

sc16is750 is a device that lets me work with i2c like a uart.

I am using BPI-M2,

Linux bpi-iot-ros-ai 4.4.55-BPI-M2Z-Kernel #1 SMP PREEMPT Sun Apr 26 21:01:50 HKT 2020 armv7l GNU/Linux

I have changed the file: /boot/config.txt,

I have added:

dtoverlay=sc16is750-i2c,int_pin=4,addr=0x48

dtparam=i2c_arm=on,i2c_arm_baudrate=400000

Then installed: sudo apt-get install i2c-tools

after reboot, I use the comand: sudo i2cdetect -y 0

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

00: – -- – -- – -- – -- – -- – -- –

10: – -- – -- – -- – -- – -- – -- – -- – --

20: – -- – -- – -- – -- – -- – -- – -- – --

30: – -- – -- – -- – -- – -- – -- – -- – --

40: 40 – -- – -- – -- – 48 – -- – -- – -- –

50: – -- – -- – -- – -- – -- – -- – -- – --

60: – -- – -- – -- – -- – -- – -- – -- – --

70: 70 – -- – -- – -- –

I2C devices are being detected.

In RPI automatically is created a new interface: ttySC0

Banana Pi does not create this interface.

What I have to do to create ttySC0 automatically?

Thanks

sudo cat /proc/tty/drivers

/dev/tty /dev/tty 5 0 system:/dev/tty

/dev/console /dev/console 5 1 system:console

/dev/ptmx /dev/ptmx 5 2 system

/dev/vc/0 /dev/vc/0 4 0 system:vtmaster

usbserial /dev/ttyUSB 188 0-511 serial

g_serial /dev/ttyGS 242 0-7 serial

unknown /dev/ttySC 243 0-7 serial

serial /dev/ttyS 4 64-71 serial

pty_slave /dev/pts 136 0-1048575 pty:slave

pty_master /dev/ptm 128 0-1048575 pty:master

unknown /dev/tty 4 1-63 console