build: io.py: DDRTristate: check oe2

check oe2 if it is equal to oe1, if it is set it to None.

Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>

Author: maass-hamburg

litex/build/io.py

@@ -201,7 +201,7 @@ def __init__(self, io, o1, o2, oe1, oe2=None, i1=None, i2=None, clk=None):
         self.o1  = o1
         self.o2  = o2
         self.oe1 = oe1
-        self.oe2 = oe2
+        self.oe2 = oe2 if not (oe2 == oe1) else None
         self.i1  = i1 if i1 is not None else Signal()
         self.i2  = i2 if i2 is not None else Signal()
         self.clk = clk if clk is not None else ClockSignal()