From 1916d3e4fc5e794af6b293dfe1eca91314b6f09d Mon Sep 17 00:00:00 2001
From: Jerry Zhao <jerryz123@berkeley.edu>
Date: Wed, 10 May 2023 21:30:59 -0700
Subject: [PATCH] Add timeunit to ClockSourceAtFreqMHz

---
 generators/chipyard/src/main/scala/harness/HarnessClocks.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/generators/chipyard/src/main/scala/harness/HarnessClocks.scala b/generators/chipyard/src/main/scala/harness/HarnessClocks.scala
index d505c66b..9f0d41b5 100644
--- a/generators/chipyard/src/main/scala/harness/HarnessClocks.scala
+++ b/generators/chipyard/src/main/scala/harness/HarnessClocks.scala
@@ -48,7 +48,7 @@ class ClockSourceAtFreqMHz(val freqMHz: Double) extends BlackBox(Map(
       |    input power,
       |    input gate,
       |    output clk);
-      |
+      |  timeunit 1ns/1ps;
       |  reg clk_i = 1'b0;
       |  always #(PERIOD/2.0) clk_i = ~clk_i & (power & ~gate);
       |  assign clk = clk_i;