[Cubietruck UART 3 4 7 Pin Out (serial, ttyS)]

Thank you very much indeed.

 

I was able to enable two other UARTs. After adding them to sun7i-a20-cubietruck.dts I recompiled the Kernel as suggested in http://www.armbian.com/github/. I copied the created debian packages to the Cubietruck and installed them all. This updated the Kernel to 4.2.5. UARTs are now working like a charm.

 

[Cubietruck UART 3 4 7 Pin Out (serial, ttyS)]

Hi all,

 

thank you for creating and maintaining Armbian. Makes live much more easier. I installed Armbian 4.5 (Cubietruck Jessie 4.2.3) via UART0. I'm now trying to access at least two further UART Devices (I need serial to an Arduino and to a GPS shield). I understood as Armbian uses the mainline Kernel script.bin is now obsolete and no longer used. Thus I don't know the pinouts for the other UARTs. Is there any documentation?

 

Furthermore I'm not sure if the other UARTs are properly enabled in the Kernel configuration.

 

Linux serial console seem to be on ttyS0 which is working fine:

[    0.000893] console [tty1] enabled

Furthermore dmesg shows ttyS0:

[    1.901838] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 41, base_baud = 1500000) is a U6_16550A

Additionally the Kernel seem to find more serials on the SoC:

/proc/device-tree/soc@01c00000/serial@01c28000
/proc/device-tree/soc@01c00000/serial@01c28400
/proc/device-tree/soc@01c00000/serial@01c28800
/proc/device-tree/soc@01c00000/serial@01c28c00
/proc/device-tree/soc@01c00000/serial@01c29000
/proc/device-tree/soc@01c00000/serial@01c29400
/proc/device-tree/soc@01c00000/serial@01c29800
/proc/device-tree/soc@01c00000/serial@01c29c00

Which probably result in the devices /dev/ttyS0 to /dev/ttyS7?

 

Which steps are nessecary to configure this devices in Linux and how can I find out the pinouts for each device. Any hints or pointers are welcome.

 

Thank you very much for your help in advance.