From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Fri, 8 May 2015 10:55:01 +0000 (-0300)
Subject: [media] DocBook/media: improve timestamp documentation
X-Git-Tag: v4.14-rc1~4413^2~747
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=200a28050953d7ba6df434e8315e31f542556680;p=platform%2Fkernel%2Flinux-rpi.git

[media] DocBook/media: improve timestamp documentation

Explain which clock was used to make the timestamp.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/Documentation/DocBook/media/v4l/vidioc-dqevent.xml b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml
index 50ccd33..c9c3c77 100644
--- a/Documentation/DocBook/media/v4l/vidioc-dqevent.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml
@@ -133,7 +133,10 @@
 	    <entry>struct timespec</entry>
 	    <entry><structfield>timestamp</structfield></entry>
             <entry></entry>
-	    <entry>Event timestamp.</entry>
+	    <entry>Event timestamp. The timestamp has been taken from the
+	    <constant>CLOCK_MONOTONIC</constant> clock. To access the
+	    same clock outside V4L2, use <function>clock_gettime(2)</function>.
+	    </entry>
 	  </row>
 	  <row>
 	    <entry>u32</entry>