ROCK PI 3A No power is supplied through the dsi mipi port

I connected a dsi mini display, the support of which is indicated in the description of the rock pi. He does not work with her, the power does not come.
I use ubuntu. The display does not even receive power through the dsi mipi connector, although it should be by pinout.

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You have the 5" (or 4.3") model similar to my 7" that i have trouble with backlight, seems the same maker.
In your case, you need to add the overlay then it will power up. If they have the same mcu (and i think they have) you will end up without a backlight. If your backlight works then my 7" LCD is faulty.

PS:
overlay: radxa-5inch-touchscreen-on-rock-3a
Please, post your progress, i am interested in your results.

what power adapter are you using? 5V or 9V/12V

The first time I used 12V, the second time I used 5V

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