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C779
,1、edit / boot / config.txt, and add the line to the end of the file. Sudo is required.
'''dtoverlay=tc358743'''
If four CSI-2 channels are used to connect C780B to CM3 or CM4 computing module
hardware, the following code should be added.
'''dtoverlay=tc358743,4lane=1'''
2、Use "dmesg | grep CMA" to check the amount of memory allocated to the CMA heap.
'''pi@raspberrypi:~ $ dmesg | grep cma
[ 0.000000] cma: Reserved 256 MiB at 0x000000001ec00000'''
If the report has less than 96MB of files assigned to CMA, edit / boot / config.txt and add.
'''dtoverlay=cma,cma-128'''
3、Restart raspberry pi.If all goes well, you should get a / dev / video0 device.Using "arecord - L" will tell you whether the sound card of tc358743 is loaded correctly.
== Video ==