Between days and month. Depending on time, issues, regressions,...
Refrain from asking for ETA. Putting pressure on developers who give you something for free is abusive.
This kernel does not come from radxa but from Rockchip themselves as BSP. However we put lots of work on top of that:https://github.com/armbian/linux-rockchip
This will basically be a thing until mainline catches up. Though there will be a few years to go in that matter.
May work once rockchip64 has been bumped to 6.15
https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md
Not sure if it is possible to use a local kernel source directory. At least I don't know how to do that. Easiest is probably just to create a repo and define url and branch in board your custom board config.
Same answer as above. Without serial logs impossible to debug.
It leaves to mention that this board is not officially supported but configuration has been provided by a community effort. Board status is unknown to the core Armbian team.
Hi
Providing logs with
PASTE_SERVER_HOST=paste.armbian.de armbianmonitor -u
helps with troubleshooting and significantly raises chances that issue gets addressed.