vendor: fix a few issues in commit 2f8669ca.

nmigen/lib/cdc.py

@@ -127,7 +127,8 @@ class AsyncFFSynchronizer(Elaboratable):
         self._stages = stages
 
         if async_edge not in ("pos", "neg"):
-            raise ValueError("AsyncFFSynchronizer async edge must be one of 'pos' or 'neg', not {!r}"
+            raise ValueError("AsyncFFSynchronizer async edge must be one of 'pos' or 'neg', "
+                             "not {!r}"
                              .format(async_edge))
         self._edge = async_edge
 

nmigen/vendor/intel.py

@@ -403,7 +403,7 @@ class IntelPlatform(TemplatedPlatform):
     def get_async_ff_sync(self, async_ff_sync):
         m = Module()
         sync_output = Signal()
-        if async_ff_sync.edge == "pos":
+        if async_ff_sync._edge == "pos":
             m.submodules += Instance("altera_std_synchronizer",
                 p_depth=async_ff_sync._stages,
                 i_clk=ClockSignal(async_ff_sync._domain),

nmigen/vendor/xilinx_7series.py

@@ -420,7 +420,7 @@ class Xilinx7SeriesPlatform(TemplatedPlatform):
         for i, o in zip((0, *flops), flops):
             m.d.async_ff += o.eq(i)
 
-        if self._edge == "pos":
+        if async_ff_sync._edge == "pos":
             m.d.comb += ResetSignal("async_ff").eq(asnyc_ff_sync.i)
         else:
             m.d.comb += ResetSignal("async_ff").eq(~asnyc_ff_sync.i)

nmigen/vendor/xilinx_spartan_3_6.py

@@ -451,7 +451,7 @@ class XilinxSpartan3Or6Platform(TemplatedPlatform):
         for i, o in zip((0, *flops), flops):
             m.d.async_ff += o.eq(i)
 
-        if self._edge == "pos":
+        if async_ff_sync._edge == "pos":
             m.d.comb += ResetSignal("async_ff").eq(asnyc_ff_sync.i)
         else:
             m.d.comb += ResetSignal("async_ff").eq(~asnyc_ff_sync.i)

nmigen/vendor/xilinx_ultrascale.py

@@ -416,7 +416,7 @@ class XilinxUltraScalePlatform(TemplatedPlatform):
         for i, o in zip((0, *flops), flops):
             m.d.async_ff += o.eq(i)
 
-        if self._edge == "pos":
+        if async_ff_sync._edge == "pos":
             m.d.comb += ResetSignal("async_ff").eq(asnyc_ff_sync.i)
         else:
             m.d.comb += ResetSignal("async_ff").eq(~asnyc_ff_sync.i)