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 <[email protected]>

litex/build/io.py

@@ -195,7 +195,7 @@ def __init__(self, io, o1, o2, oe1, oe2=None, i1=Signal(), i2=Signal(), clk=Cloc
         self.o1  = o1
         self.o2  = o2
         self.oe1 = oe1
-        self.oe2 = oe2
+        self.oe2 = oe2 if not (oe2 == oe1) else None
         self.i1  = i1
         self.i2  = i2
         self.clk = clk