First doc pass (no updated imgs) [ci skip]

docs/Advanced-Concepts/Harness-Clocks.rst

@@ -0,0 +1,20 @@
+.. _harness-clocks:
+
+Creating Clocks in the Test Harness
+===================================
+
+By default, all modules in the Test Harness, including those made by harness binders
+use the implicit clock and reset of the Test Harness.
+However, the test harness and harness binders, have the ability to generate a standalone
+clock and reset signal.
+This is done by the ``HarnessClockInstantiator`` which allows you to request a clock at a
+particular frequency.
+Take the following harness binder example:
+
+.. literalinclude:: ../../generators/chipyard/src/main/scala/config/HarnessBinders.scala
+    :language: scala
+    :start-after: DOC include start: HarnessClockInstantiatorEx
+    :end-before: DOC include end: HarnessClockInstantiatorEx
+
+While the purpose of the binder isn't necessary here, you can see that the ``p(HarnessClockInstantiatorKey).getClockBundle``
+allows the binder to request a clock/reset bundle at a particular frequency.