From d4f53abeec7a3c29a894f89248e6b6810a5a8790 Mon Sep 17 00:00:00 2001
From: Alex Forencich <alex@alexforencich.com>
Date: Sat, 14 Nov 2020 22:39:16 -0800
Subject: [PATCH] Set default unit to ns

---
 cocotbext/axi/axis.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cocotbext/axi/axis.py b/cocotbext/axi/axis.py
index c0da7f1..7a7cf26 100644
--- a/cocotbext/axi/axis.py
+++ b/cocotbext/axi/axis.py
@@ -459,7 +459,7 @@ class AxiStreamSink(object):
     def idle(self):
         return not self.active
 
-    async def wait(self, timeout=0, timeout_unit=None):
+    async def wait(self, timeout=0, timeout_unit='ns'):
         if not self.empty():
             return
         self.sync.clear()