You can check the .DTB files on the bootfs (FAT32) 1st partition. AFAIK the Pi500 uses a D0 variant of the SoC and that needs a separate/dedicated .dts (when downstream kernel what Armbian also uses). When upstream kernel, make sure you have the very latest, as even in 6.18.0-rc? (or 6.19.0-rc? dont remember) I saw some fix w.r.t. naming w.r.t. that D0 variant. And also should pair with proper and/or new enough bootloader (the code in EEPROM). Still upstream kernel might lack a lot of functionality, but at least RP1 should work so RJ45 should work.

no clue. needs testing. perhaps it just works. kernel sources are the same as rpi os.

Thank Igor. Just for reference, I also tried Armbian_community_26.2.0-trunk.332_Odroidhc4_forky_current_6.18.7_minimal.img apt update apt upgrade apt install linux-headers-current-meson64 apt install zfsutils-linux zfs-initramfs zfs-dkms zfs-zed Everything went fine and seams to working OK. Chris

@Harleyyyu Your project could be interesting , I would suggest to open a dedicated 3ad on It own so people can contribute. As you have already realized by yourself quite all hardware and drivers aspects of this rk322x soc have bene investigated by @jockand/or @ilmich But if you achieve any progress on GENERAL drivers and performance that isn't already been discussed or achieved you can came back here to share Thanks

Okay here's a huge update and a win for me: While i stopped playing with the kernel, i focused on improving openauto by replacing GStreamer with ffmpeg and utilizing the same RTAudio to Alsa Patch which achieved the following things: 720p 60 1080p 60 FPS Stream (cma set to 265) RTAudio to Alsa (Video and Audio are synced) Low Latency Touch or Mouse Response Now while there is still some bugs like when i disconnect my phone by pulling the usb cord results into a segment fault i'd say that's just a minor bug that can be fixed along the way. Huge thanks to the experimental ffmpeg patches and the guide @jock PS: hopefully someone can help me improve the code even more, i know this board is capable of being an android auto head unit for those who like to build it on their own: Github: Openauto-rk3229-armbian (requires you to compile aasdk)