genlib/cdc/MultiReg: implement rename_clock_domain + get_clock_domains

diff --git a/migen/genlib/cdc.py b/migen/genlib/cdc.py
index 632b337eb194913a2abe0ad4a053cd177c05abdf..eac3341b79ffb2f3ceb148faad3e71a0efb566dc 100644 (file)
--- a/migen/genlib/cdc.py
+++ b/migen/genlib/cdc.py
@@ -30,6 +30,13 @@ class MultiReg(Special):
                self.odomain = odomain
                self.n = n
 
+       def rename_clock_domain(self, old, new):
+               if self.odomain == old:
+                       self.odomain = new
+
+       def get_clock_domains(self):
+               return {self.odomain}
+
        def list_ios(self, ins, outs, inouts):
                r = set()
                if ins: