I have attached sc16is740 to the I2C port of BPI. sc16is740 is a device that lets me work with i2c like a uart. The device is detected with the comand:

sudo i2cdetect -y 0

nº48

00: – -- – -- – -- – -- – -- – -- –

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

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

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

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

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

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

70: 70 – -- – -- – -- –

Then I have load the driver with: sudo  modprobe sc16is7xx 0x48

Using:

sudo  modprobe sc16is7xx 

I see the module sc16is7xx loaded using:

sudo lsmod

However, the system does not created a new interface like ttySC0 and I do not know how to tell the driver which IRQ Pin should use.

I have tested also:

sudo modprobe i2c:sc16is740  int_pin=4 addr=0x48

Then, I have added the module to: /etc/modules-load.d/module_name.conf
 

I am missing some steps.

Could someone help to load this driver?

 

PSD: I have try also to load this driver in an Radxa Zero. Same result

Thanks

Moved to P2P help.

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