NanoPI M2 has garbage on serial console from kernel
Posted: Fri May 13, 2016 4:48 pm
Hi,
U-Boot is show ok, but as soon as kernel starts it shows block graphic characters (always the same).
Does not look like a wrong baudrate. With scope I see the bits have correct length for 115K2.
This happens on all kernels I compile myself Linux and Android.
The Linux kernel from your image is fine, so I assume it is a kernel config issue.
The android kernel from your image also shows the garbage.
It would help to have the working .config file.
Thanks a lot.
PS: I tried different terminal programs on Ubuntu and Win7. Also tried different Serial/USB adapters.
Kernel cmd line in U-Boot looks good and kernel is configured to prefer the provided cmd line.
U-Boot is show ok, but as soon as kernel starts it shows block graphic characters (always the same).
Does not look like a wrong baudrate. With scope I see the bits have correct length for 115K2.
This happens on all kernels I compile myself Linux and Android.
The Linux kernel from your image is fine, so I assume it is a kernel config issue.
The android kernel from your image also shows the garbage.
It would help to have the working .config file.
Thanks a lot.
PS: I tried different terminal programs on Ubuntu and Win7. Also tried different Serial/USB adapters.
Kernel cmd line in U-Boot looks good and kernel is configured to prefer the provided cmd line.