Hi Fabio,
On 10/14/19 6:54 AM, Fabio Estevam wrote:
The i.MX6DL sabreauto has different numbering on the I2C bus and
I2C muxes compared to the i.MX6Q as shown in the kernel log below:
[ 5.159423] imx-media: ipu1_csi0_mux:5 -> ipu1_csi0:0
[ 5.164618] imx-media: ipu1_csi1_mux:5 -> ipu1_csi1:0
[ 5.169953] imx-media: adv7180 4-0021:0 -> ipu1_csi0_mux:4
To avoid confusion, add an entry that shows how to setup the links and
configure the pads that are specific to the i.MX6DL sabreauto.
Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
---
Changes since v1:
- Add a new entry for the mx6dl sabreauto
Documentation/media/v4l-drivers/imx.rst | 57 +++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst
index 36e8d1226ac6..6a9dad8b050b 100644
--- a/Documentation/media/v4l-drivers/imx.rst
+++ b/Documentation/media/v4l-drivers/imx.rst
@@ -572,6 +572,63 @@ supported YUV or RGB pixelformat on the capture device node.
This platform accepts Composite Video analog inputs to the ADV7180 on
Ain1 (connector J42).
+i.MX6DL SabreAuto with ADV7180 decoder
+--------------------------------------
+
+On the i.MX6DL SabreAuto, an on-board ADV7180 SD decoder is connected to the
+parallel bus input on the internal video mux to IPU1 CSI0.
+
+The following example configures a pipeline to capture from the ADV7180
+video decoder, assuming NTSC 720x480 input signals, using simple
+interweave (unconverted and without motion compensation). The adv7180
+must output sequential or alternating fields (field type 'seq-bt' for
+NTSC, or 'alternate'):
+
+.. code-block:: none
+
+ # Setup links
+ media-ctl -l "'adv7180 4-0021':0 -> 'ipu1_csi0_mux':4[1]"
+ media-ctl -l "'ipu1_csi0_mux':5 -> 'ipu1_csi0':0[1]"
+ media-ctl -l "'ipu1_csi0':2 -> 'ipu1_csi0 capture':0[1]"
+ # Configure pads
+ media-ctl -V "'adv7180 4-0021':0 [fmt:UYVY2X8/720x480 field:seq-bt]"
+ media-ctl -V "'ipu1_csi0_mux':5 [fmt:UYVY2X8/720x480]"
+ media-ctl -V "'ipu1_csi0':2 [fmt:AYUV32/720x480]"
+ # Configure "ipu1_csi0 capture" interface (assumed at /dev/video4)
+ v4l2-ctl -d4 --set-fmt-video=field=interlaced_bt
+
+Streaming can then begin on /dev/video4. The v4l2-ctl tool can also be
+used to select any supported YUV pixelformat on /dev/video4.
+
+This example configures a pipeline to capture from the ADV7180
+video decoder, assuming PAL 720x576 input signals, with Motion
+Compensated de-interlacing. The adv7180 must output sequential or
+alternating fields (field type 'seq-tb' for PAL, or 'alternate').
+
+.. code-block:: none
+
+ # Setup links
+ media-ctl -l "'adv7180 4-0021':0 -> 'ipu1_csi0_mux':4[1]"
+ media-ctl -l "'ipu1_csi0_mux':5 -> 'ipu1_csi0':0[1]"
+ media-ctl -l "'ipu1_csi0':1 -> 'ipu1_vdic':0[1]"
+ media-ctl -l "'ipu1_vdic':2 -> 'ipu1_ic_prp':0[1]"
+ media-ctl -l "'ipu1_ic_prp':2 -> 'ipu1_ic_prpvf':0[1]"
+ media-ctl -l "'ipu1_ic_prpvf':1 -> 'ipu1_ic_prpvf capture':0[1]"
+ # Configure pads
+ media-ctl -V "'adv7180 3-0021':0 [fmt:UYVY2X8/720x576 field:seq-tb]"
should be "'adv7180 4-0021:0".
+ media-ctl -V "'ipu1_csi0_mux':2 [fmt:UYVY2X8/720x576]"
should be "'ipu1_csi0_mux':5".
+ media-ctl -V "'ipu1_csi0':1 [fmt:AYUV32/720x576]"
+ media-ctl -V "'ipu1_vdic':2 [fmt:AYUV32/720x576 field:none]"
+ media-ctl -V "'ipu1_ic_prp':2 [fmt:AYUV32/720x576 field:none]"
+ media-ctl -V "'ipu1_ic_prpvf':1 [fmt:AYUV32/720x576 field:none]"
Please add (after above line):
# Configure "ipu1_ic_prpvf capture" interface (assumed at /dev/video1)
v4l2-ctl -d1 --set-fmt-video=field=none
+
+Streaming can then begin on the capture device node at
+"ipu1_ic_prpvf capture". The v4l2-ctl tool can be used to select any
+supported YUV or RGB pixelformat on the capture device node.
+
Please replace above paragraph with:
Streaming can then begin on /dev/video1. The v4l2-ctl tool can also be
used to select any supported YUV pixelformat on /dev/video1.
If you don't mind while you are on this, can you please add this
v4l2-ctl step to the i.MX6Q PAL example, it is missing there as well.
Steve
+This platform accepts Composite Video analog inputs to the ADV7180 on
+Ain1 (connector J42).
+
SabreSD with MIPI CSI-2 OV5640
------------------------------
