How to Enable UEXT1/UEXT2 on A20-OLinuXino-LIME?

[dbhl]

I am using Debian version 3.4.90. Cannot get /dev/ttyS1 or /dev/ttyS2 to work.

Thanks!

[Gerrit]

First check if they are configured and enabled in the fex/bin file

http://linux-sunxi.org/Fex_Guide#uart_configuration and if the  GPIO ports don't conflict

and to check if the ports are know

Code Select Expand

dmesg |grep ttyS

Code Select Expand

[    0.663027] sunxi-uart.0: ttyS0 at MMIO 0x1c28000 (irq = 33) is a U6_16550A
[    1.434937] sunxi-uart.4: ttyS1 at MMIO 0x1c29000 (irq = 49) is a U6_16550A