compat.fhdl.module: implement some TODO'd deprecation warnings.

diff --git a/nmigen/compat/fhdl/module.py b/nmigen/compat/fhdl/module.py
index 26feb16debf33031f67796a832da27365161be7f..43ca8fb301cd79958a2170c07fbce24ec9b38d95 100644 (file)
--- a/nmigen/compat/fhdl/module.py
+++ b/nmigen/compat/fhdl/module.py
@@ -83,12 +83,12 @@ class _CompatModuleSubmodules(_CompatModuleProxy):
 
 
 class _CompatModuleClockDomains(_CompatModuleProxy):
-    @deprecated("TODO")
+    @deprecated("instead of `self.clock_domains.<name> =`, use `m.domains.<name> =`")
     def __setattr__(self, name, value):
         self.__iadd__(value)
         setattr(self._cm, name, value)
 
-    @deprecated("TODO")
+    @deprecated("instead of `self.clock_domains +=`, use `m.domains +=`")
     def __iadd__(self, other):
         self._cm._module.domains += _flat_list(other)
         return self