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→Device node description
<code>sudo wget <nowiki>https://datasheets.raspberrypi.com/cmio/dt-blob-dualcam.bin</nowiki> -O /boot/dt-blob.bin</code>
<code>sudo wget <nowiki>https://datasheets.raspberrypi.com/cmio/dt-blob-dualcam.bin</nowiki> -O /boot/dt-blob.bin</code>
==== Upgrade dual camera version dtbo file ====
==== For Buster OS（kernel5.10） ====
Use csimx307 as an example：
Upgrade dual camera version dtbo file, Use csimx307 as an example.
<code>sudo cp raspberrypi_v4l2/release/driver_bin/$(uname -r)/csimx307-dual-cm4.dtbo /boot/overlays/csimx307.dtbo</code>
<code>sudo cp raspberrypi_v4l2/release/driver_bin/$(uname -r)/csimx307-dual-cm4.dtbo /boot/overlays/csimx307.dtbo</code>
<code>sudo reboot</code>
<code>sudo reboot</code>
==== For Bullseye OS（kernel5.15） ====
Edit file<code>/boot/config.txt</code>，Add one line<code>dtoverlay=[camera],cam0</code>.
Take veyecam2m as an example.
<code>[all]</code>
<code>dtparam=i2c_vc=on</code>
<code>dtoverlay=veyecam2m</code>
<code>dtoverlay=veyecam2m,cam0</code>
==== Device node description ====
==== Device node description ====
The CM4 module uses two I2C channels to communicate with the two cameras respectively.
The CM4 module uses two I2C channels to communicate with the two cameras, respectively.
{| class="wikitable"
{| class="wikitable"
! description
! description
|CAM1
|CAM1
|10
|10
|video2
|video2（Buster），video1（Bullseye）
|}
|}
Note: If there is only one camera, video node is always video0.
Note: If there is only one camera, video node is always video0.
*CAM1 preview(VEYE-MIPI-327,CS-MIPI-IMX307 @1080p mode)
*CAM1 preview(VEYE-MIPI-327,CS-MIPI-IMX307 @1080p mode)
<code>gst-launch-1.0 v4l2src io-mode=dmabuf device=/dev/video2 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! v4l2convert capture-io-mode=dmabuf output-io-mode=dmabuf ! autovideosink sync=false -v</code>
<code>gst-launch-1.0 v4l2src io-mode=dmabuf device=/dev/video1 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! v4l2convert capture-io-mode=dmabuf output-io-mode=dmabuf ! autovideosink sync=false -v</code>
=== Source code compilation ===
=== Source code compilation ===
Please refer to: [[Build drivers from source for rpi]].
Please refer to: [[Build drivers from source for rpi]].