diff --git a/src/compatibility/downloads.jd b/src/compatibility/downloads.jd
index 0fe1675..0d729f2 100644
--- a/src/compatibility/downloads.jd
+++ b/src/compatibility/downloads.jd
@@ -2,7 +2,7 @@
 @jd:body
 
 <!--
-    Copyright 2013 The Android Open Source Project
+    Copyright 2015 The Android Open Source Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -29,23 +29,23 @@
 
 <h2 id="android-50">Android 5.0</h2>
 <p>Android 5.0 is the release of the development milestone code-named Lollipop.
-Source code for the below tests is found in the 'android-5.0.0_r6' branch in
-the open-source tree.</p>
+The source code for the following tests can be synced with the
+'android-cts-5.0_r2' tag in the open-source tree.</p>
 <ul>
 <li><a href="5.0/android-5.0-cdd.pdf">Android 5.0 Compatibility Definition
 Document (CDD)</a></li>
 <li><a
-href="https://dl.google.com/dl/android/cts/android-cts-5.0_r1-linux_x86-arm.zip">Android
-5.0 R1 Compatibility Test Suite (CTS) - ARM</a></li>
+href="https://dl.google.com/dl/android/cts/android-cts-5.0_r2-linux_x86-arm.zip">Android
+5.0 R2 Compatibility Test Suite (CTS) - ARM</a></li>
 <li><a
-href="https://dl.google.com/dl/android/cts/android-cts-5.0_r1-linux_x86-x86.zip">Android
-5.0 R1 Compatibility Test Suite (CTS) - x86</a></li>
+href="https://dl.google.com/dl/android/cts/android-cts-5.0_r2-linux_x86-x86.zip">Android
+5.0 R2 Compatibility Test Suite (CTS) - x86</a></li>
 <li><a
-href="https://dl.google.com/dl/android/cts/android-cts-verifier-5.0_r1-linux_x86-arm.zip">Android
-5.0 R1 CTS Verifier - ARM</a></li>
+href="https://dl.google.com/dl/android/cts/android-cts-verifier-5.0_r2-linux_x86-arm.zip">Android
+5.0 R2 CTS Verifier - ARM</a></li>
 <li><a
-href="https://dl.google.com/dl/android/cts/android-cts-verifier-5.0_r1-linux_x86-x86.zip">Android
-5.0 R1 CTS Verifier - x86</a></li>
+href="https://dl.google.com/dl/android/cts/android-cts-verifier-5.0_r2-linux_x86-x86.zip">Android
+5.0 R2 CTS Verifier - x86</a></li>
 </ul>
 
 <h2 id="android-44">Android 4.4</h2>
diff --git a/src/devices/audio/usb.jd b/src/devices/audio/usb.jd
index e805ac4..147bfa3 100644
--- a/src/devices/audio/usb.jd
+++ b/src/devices/audio/usb.jd
@@ -552,7 +552,10 @@
 
 <ul>
 <li>design hardware to support USB host mode</li>
-<li>enable all kernel features needed: USB host mode, USB audio, isochronous transfer mode</li>
+<li>enable generic USB host support at the framework level
+via the <code>android.hardware.usb.host.xml</code> feature flag</li>
+<li>enable all kernel features needed: USB host mode, USB audio, isochronous transfer mode;
+see <a href="{@docRoot}/devices/tech/kernel.html">Android Kernel Configuration</a></li>
 <li>keep up-to-date with recent kernel releases and patches;
 despite the noble goal of class compliance, there are extant audio peripherals
 with <a href="http://en.wiktionary.org/wiki/quirk">quirks</a>,
diff --git a/src/devices/tech/kernel.jd b/src/devices/tech/kernel.jd
index da749c5..637c5c4 100644
--- a/src/devices/tech/kernel.jd
+++ b/src/devices/tech/kernel.jd
@@ -288,3 +288,11 @@
 CONFIG_TIMER_STATS=y
 CONFIG_SCHED_TRACER=y
 </pre>
+
+<h3>For USB host mode audio</h3>
+
+<pre>
+CONFIG_SND_USB=y
+CONFIG_SND_USB_AUDIO=y
+# CONFIG_USB_AUDIO is for a peripheral mode (gadget) driver
+</pre>