| Message ID | 20200408123215.2531-4-festevam@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] media: imx.rst: Fix the MIPI CSI-2 virtual channel | expand |
On 4/8/20 5:32 AM, Fabio Estevam wrote: > 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> > --- > Documentation/media/v4l-drivers/imx.rst | 42 +++++++++++++++++++++++++ > 1 file changed, 42 insertions(+) > > diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst > index 37b944f12d93..c872cc84d9fc 100644 > --- a/Documentation/media/v4l-drivers/imx.rst > +++ b/Documentation/media/v4l-drivers/imx.rst > @@ -670,6 +670,28 @@ Streaming can then begin on "ipu1_ic_prpenc capture" node. The v4l2-ctl > tool can be used to select any supported YUV or RGB pixelformat on the > capture device node. > > +In order to determine what is the /dev/video node correspondent to > +"ipu1_ic_prpenc": > + > +.. code-block:: none > + > + # dmesg | grep ipu1_ic_prpenc | grep Registered A better way is to use "media-ctl -e": # media-ctl -e "ipu1_ic_prpenc capture" /dev/video1 Grepping from dmesg can fail when the log fills up and pushes out the boot "Registered ..." messages. Steve > + ipu1_ic_prpenc: Registered ipu1_ic_prpenc capture as /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 > + > The following example configures unprocessed video capture pipeline to > capture from the OV5640, transmitting on MIPI CSI-2 virtual channel 0: > > @@ -690,6 +712,26 @@ Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl > tool can be used to select any supported YUV or RGB pixelformat on the > capture device node. > > +In order to determine what is the /dev/video node correspondent to "ipu1_csi0": > + > +.. code-block:: none > + > + # dmesg | grep ipu1_csi0 | grep Registered > + ipu1_csi0: Registered ipu1_csi0 capture as /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 > > Known Issues > ------------
diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst index 37b944f12d93..c872cc84d9fc 100644 --- a/Documentation/media/v4l-drivers/imx.rst +++ b/Documentation/media/v4l-drivers/imx.rst @@ -670,6 +670,28 @@ Streaming can then begin on "ipu1_ic_prpenc capture" node. The v4l2-ctl tool can be used to select any supported YUV or RGB pixelformat on the capture device node. +In order to determine what is the /dev/video node correspondent to +"ipu1_ic_prpenc": + +.. code-block:: none + + # dmesg | grep ipu1_ic_prpenc | grep Registered + ipu1_ic_prpenc: Registered ipu1_ic_prpenc capture as /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 + The following example configures unprocessed video capture pipeline to capture from the OV5640, transmitting on MIPI CSI-2 virtual channel 0: @@ -690,6 +712,26 @@ Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl tool can be used to select any supported YUV or RGB pixelformat on the capture device node. +In order to determine what is the /dev/video node correspondent to "ipu1_csi0": + +.. code-block:: none + + # dmesg | grep ipu1_csi0 | grep Registered + ipu1_csi0: Registered ipu1_csi0 capture as /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 Known Issues ------------
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> --- Documentation/media/v4l-drivers/imx.rst | 42 +++++++++++++++++++++++++ 1 file changed, 42 insertions(+)