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P1010RDB: uart1 support in linux kernel

Question asked by nobel sharanyan jeganathan on Mar 8, 2016
Latest reply on Mar 15, 2016 by nobel sharanyan jeganathan



Currently, I am enabling two uart 0 and uart 1 in my custom board as we are in need of it.

Since uart 0 and uart 1 work independently.

But when I tried to use "/dev/ttyS1" I am getting the error

can't tcsetattr for /dev/ttyS1: Input/output error


On further analysis, the device pointer is showing NULL. which means the device is not register properly.

uart 0(ttyS0) got initialized - serial8250_probe

uart 1(ttyS1) didn't initialized properly - serial8250_probe - as device pointer is NULL

How to enable both uart 0 and uart1 in linux?