Suspected wrong pin wire connection.

[trharoldsen]

For MachXO2, the PLLDATO# pins are connected to the JPLLDATI# wire. I don't see any PLL wires in the database, but they the output pins should seemingly be connected the JPLLDATO# pins.

for (int i=0;i<8;i++)
    graph.add_bel_output(bel, graph.ident(fmt("PLLDATO" << i )), x, y, graph.ident(fmt("JPLLDATI" << i << "_PLL")));

https://github.com/YosysHQ/prjtrellis/blame/36c615d1740473cc3574464c7f0bed44da20e5b6/libtrellis/src/Bels.cpp#L1045