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diff --git a/Documentation/DocBook/v4l/pixfmt-grey.xml b/Documentation/DocBook/v4l/pixfmt-grey.xml
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+    <refentry id="V4L2-PIX-FMT-GREY">
+      <refmeta>
+        <refentrytitle>V4L2_PIX_FMT_GREY ('GREY')</refentrytitle>
+        &manvol;
+      </refmeta>
+      <refnamediv>
+        <refname><constant>V4L2_PIX_FMT_GREY</constant></refname>
+        <refpurpose>Grey-scale image</refpurpose>
+      </refnamediv>
+      <refsect1>
+        <title>Description</title>
+
+        <para>This is a grey-scale image. It is really a degenerate
+Y'CbCr format which simply contains no Cb or Cr data.</para>
+
+        <example>
+          <title><constant>V4L2_PIX_FMT_GREY</constant> 4 &times; 4
+pixel image</title>
+
+          <formalpara>
+            <title>Byte Order.</title>
+            <para>Each cell is one byte.
+                <informaltable frame="none">
+                <tgroup cols="5" align="center">
+                  <colspec align="left" colwidth="2*" />
+                  <tbody valign="top">
+                    <row>
+                      <entry>start&nbsp;+&nbsp;0:</entry>
+                      <entry>Y'<subscript>00</subscript></entry>
+                      <entry>Y'<subscript>01</subscript></entry>
+                      <entry>Y'<subscript>02</subscript></entry>
+                      <entry>Y'<subscript>03</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;4:</entry>
+                      <entry>Y'<subscript>10</subscript></entry>
+                      <entry>Y'<subscript>11</subscript></entry>
+                      <entry>Y'<subscript>12</subscript></entry>
+                      <entry>Y'<subscript>13</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;8:</entry>
+                      <entry>Y'<subscript>20</subscript></entry>
+                      <entry>Y'<subscript>21</subscript></entry>
+                      <entry>Y'<subscript>22</subscript></entry>
+                      <entry>Y'<subscript>23</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;12:</entry>
+                      <entry>Y'<subscript>30</subscript></entry>
+                      <entry>Y'<subscript>31</subscript></entry>
+                      <entry>Y'<subscript>32</subscript></entry>
+                      <entry>Y'<subscript>33</subscript></entry>
+                    </row>
+                  </tbody>
+                </tgroup>
+                </informaltable>
+              </para>
+          </formalpara>
+        </example>
+      </refsect1>
+    </refentry>
+
+  <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "pixfmt.sgml"
+indent-tabs-mode: nil
+End:
+  -->