[PATCH v2 4/4] media: imx.rst: Provide streaming examples for imx6q-sabresd

[Fabio Estevam <festevam@gmail.com>]

Improve the documentation by providing examples on how to test camera
capture on imx6q-sabresd via v4l2-ctl and Gstreamer.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Use media-ctl -e to determine the video node. (Steve)

 Documentation/media/v4l-drivers/imx.rst | 45 +++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst
index 955d27582e10..025f21def7dc 100644
--- a/Documentation/media/v4l-drivers/imx.rst
+++ b/Documentation/media/v4l-drivers/imx.rst
@@ -664,6 +664,28 @@ Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl
 tool can be used to select any supported pixelformat on the capture
 device node.
 
+To determine what is the /dev/video node correspondent to
+"ipu1_csi0 capture":
+
+.. code-block:: none
+
+   media-ctl -e "ipu1_csi0 capture"
+   /dev/video0
+
+/dev/video0 is the streaming element in this case.
+
+Starting the streaming via v4l2-ctl:
+
+.. code-block:: none
+
+   v4l2-ctl --stream-mmap -d /dev/video0
+
+Starting the streaming via Gstreamer and sending the content to the display:
+
+.. code-block:: none
+
+   gst-launch-1.0 v4l2src device=/dev/video0 ! kmssink
+
 The following example configures a direct conversion pipeline to capture
 from the OV5640, transmitting on MIPI CSI-2 virtual channel 0. It also
 shows colorspace conversion and scaling at IC output.
@@ -689,6 +711,29 @@ shows colorspace conversion and scaling at IC output.
 
 Streaming can then begin on "ipu1_ic_prpenc capture" node.
 
+To determine what is the /dev/video node correspondent to
+"ipu1_ic_prpenc capture":
+
+.. code-block:: none
+
+   media-ctl -e "ipu1_ic_prpenc capture"
+   /dev/video1
+
+
+/dev/video1 is the streaming element in this case.
+
+Starting the streaming via v4l2-ctl:
+
+.. code-block:: none
+
+   v4l2-ctl --stream-mmap -d /dev/video1
+
+Starting the streaming via Gstreamer and sending the content to the display:
+
+.. code-block:: none
+
+   gst-launch-1.0 v4l2src device=/dev/video1 ! kmssink
+
 Known Issues
 ------------
 
-- 
2.17.1