Open Source is excellent stuff, I would highly recommend looking at the FOSSI organisation which is dedicated to Open Source Hardware.
Unfortunately some Open Source shall we say leaves something to be desired.
Like a standard reset scheme, synchronous or asynchronous. It's best NOT to mix the two schemes unless you REALLY HAVE TO.

I am in the middle of debugging the Uart I got hold of. So far I've seen a mix of resets and registers not reset.
I sincerely hope that there are no latches in there !!