Hi, happen to have some reference for this?

I upstreamed some of them.

Here's a complete list:

https://elixir.bootlin.com/linux/latest/source/arch/arm64/bo... https://elixir.bootlin.com/linux/latest/source/arch/arm64/bo... https://elixir.bootlin.com/linux/latest/source/arch/arm/boot...

just search for orange. Most of Orange Pi boards have upstream support. Like one or two don't.