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Troubleshooting • Re: CM4: Device Tree overlay for PR2000K CSI-2 decoder not loading on kernel 6.12 (dtoverlay shows “No overlays loaded”)

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ADV728x already have overlays via adv728x-m-overlay.dts and adv7282m-overlay.dts.
As does TC358743 as an HDMI to CSI2 bridge, and a bundle of other 3rd party image sensors.

None of this is linked to the firmware support. Except for autodetecting the official Pi cameras and merging in overlays configured in config.txt, the firmware has no involvement.

All the kernel source is available in https://github.com/raspberrypi/linux/. If you're having issues then add some debugging lines into the code and see what is failing. Potentially the Unicam driver validates additional properties from DT that i.MX and Rockchip don't, but at the moment you have given us no information to work with.
Presumably this PR2000K driver is GPLv2, therefore where is the source code so that we can look at it in order to be able to advise further?

Statistics: Posted by 6by9 — Sun Jan 04, 2026 3:53 pm



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