build/gowin/platform: stub add_false_path_constraint

Add a stub add_false_path_constraint to allow Ethernet to work on Tang Primer 20K. Signed-off-by: Icenowy Zheng <[email protected]>
enjoy-digital · Aug 11, 2023 · aff33be · aff33be
1 parent 577674b
commit aff33be
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/litex/build/gowin/platform.py b/litex/build/gowin/platform.py
@@ -44,3 +44,7 @@ def build(self, *args, **kwargs):
 
     def add_period_constraint(self, clk, period):
         self.toolchain.add_period_constraint(self, clk, period)
+
+    def add_false_path_constraint(self, from_, to):
+        # TODO: Really implement it, currently a no-op to allow Ethernet
+        pass