[LinuxPPS] Kernel configuration and more ......

[Cirilo Bernardo]

> So your system doesn't see any interrupt from the serial line... then
> you can't see PPS events. Verify if your hardware is correctly setup.

This might sound stupid, but did you apply the patch to the serial driver
so that it provides the PPS?  The other thing to check is your serial
comms settings;  if you disabled the Modem Status lines on the UART, you
will never get an interrupt for a change in DCD.
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