I did some further tests.
There is definitely something strange about CONFIG_DEBUG_LL and CONFIG_DEBUG_LL_UART_8250.
Normal console output over UART should work without CONFIG_DEBUG_LL being enabled. At least it did with all kernels I tested so far.
With these new sources, disabling CONFIG_DEBUG_LL seems to completely disable output over UART.
Navym could you maybe have a look?
It is certainly NOT very important, but interesting nonetheless. If I am not mistaking, there should be console output over UART, although DEBUG_LL is disabled.
Besides that minor oddity, it looks very interesting. I have a USB3.0 (Renesas) and a SATAIII (Asmedia) mini PCIe card that I am looking forward to try with the new kernel.
