In BlockConf.useHTree(), must set the useClockTree flag (for chip mode).

crlcore/python/technos/node180/gf180mcu_c4m/iolib.py

@@ -59,7 +59,6 @@ def _loadIoLib ( pdkDir ):
     io.vprint( 1, '  o  Setup GF180MCU I/O library in {}.'.format( ioLib.getName() ))
     cellsDir = pdkDir / 'libraries' / 'gf180mcu_fd_io' / 'latest' / 'cells'
     for lefFile in cellsDir.glob( '*/*_5lm.lef' ):
-        print( lefFile )
         gdsFile = lefFile.with_suffix( '.gds' )
         if gdsFile.is_file():
             Gds.setTopCellName( gdsFile.stem[:-4] )

cumulus/src/plugins/block/configuration.py

@@ -1564,7 +1564,10 @@ class BlockConf ( GaugeConf ):
                                        .format(netName)) )
                 return
         self.hTreeDatas.append( [ netName, flags ] );
-        self.useClockTree = True
+        net = self.cell.getNet( netName )
+        trace( 550,'\tBlockConf.useHTree() on "{}" -> {}\n'.format( netName, net ))
+        if net and net.isClock():
+            self.useClockTree = True
 
     def addTrackAvoid ( self, trackAvoid ):
         if self.cfg.anabatic.netBuilderStyle == 'VH,2RL':