Hello @WayneWWW, thanks for replay and pointers. While waiting for answer I was searching through forum and found this post (VR display for jetson nano - #5 by Lissanro). The result is the same on both procedures - with your help and solution on this post.
Boot up Nano with disconnected MIPI board, after system is booted I connect LCD panel and everything is perfect. If I disconnect LCD panel reboot system connect it again, LCD starts to flicker. It doesn’t matter to which system I connect it after this, it will flicker (Raspberry Pi, Windows laptop). If I disconnect LCD panel, wait for 3h screen won’t flicker but if I repeat procedure it starts to flicker again. I tried this on three different MIPI boards and LCD panels and result is the same.
I can’t get it to flicker no matter how and where I connect it just that Jetson Nano isn’t included.