diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index df46590059..6795afb12a 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -2661,6 +2661,29 @@
     </para>
 </section>
 
+<section id='ref-classes-uboot-config'>
+    <title><filename>uboot-config.bbclass</filename></title>
+
+    <para>
+        The <filename>uboot-config</filename> class provides support for
+        U-Boot configuration for a machine.
+        Specify the machine in your recipe as follows:
+        <literallayout class='monospaced'>
+     UBOOT_CONFIG ??= &lt;default&gt;
+     UBOOT_CONFIG[foo] = "config,images"
+        </literallayout>
+        You can also specify the machine using this method:
+        <literallayout class='monospaced'>
+     UBOOT_MACHINE = "config"
+        </literallayout>
+        See the
+        <link linkend='var-UBOOT_CONFIG'><filename>UBOOT_CONFIG</filename></link>
+        and
+        <link linkend='var-UBOOT_MACHINE'><filename>UBOOT_MACHINE</filename></link>
+        variables for additional information.
+    </para>
+</section>
+
 <section id='ref-classes-useradd'>
     <title>Adding Users - <filename>useradd.bbclass</filename></title>