[UNTESTED] Add initial support for Orangepi 5 Ultra

[EvilOlaf]

Description

Backported dt for current.
Jimmy Hons integration branch for edge
https://github.com/jimmyhon/linux/tree/integrate-6.15
https://patchwork.kernel.org/project/linux-rockchip/cover/20250220041010.3801-1-honyuenkwun@gmail.com/

Test images

http://fi.mirror.armbian.de/.testing/Armbian-unofficial_25.05.0-trunk_Orangepi5-ultra_bookworm_current_6.12.16_minimal.img.xz
http://fi.mirror.armbian.de/.testing/Armbian-unofficial_25.05.0-trunk_Orangepi5-ultra_bookworm_edge_6.14.0-rc1_minimal.img.xz

How Has This Been Tested?

• current build
• edge build
• boot. Nope. no hw

Checklist:

• [?] My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[EvilOlaf]

oops, forgot to test building entire image. Did kernel only. uboot fails.

[jimmyhon]

Minor quirks about the Ultra.

This Ultra only has a HDMI1, however, the patch/kernel/archive/rockchip64-6.12 does not have patches to enable HDMI1.

patch/kernel/archive/rockchip64-6.13 does have the extra patches to use basic HDMI1, but I think you also need to have a copy of the DT in patch/kernel/archive/rockchip64-6.13/dt for this to be built in "edge"?
https://github.com/armbian/build/blob/main/patch/kernel/archive/rockchip64-6.13/rk3588-0130-add-hdmi1-support.patch

side note: in mainline HDMI1 support is going in 6.15-rc1, so the Ultra won't be useable for most people in mainline until then. Most people don't want to be stuck using only UART or SSH to control their board.

[EvilOlaf]

It is expected that the 5 Ultra will only partially work on 6.12. That's fine. Good enough for server applications. If there are too many complains we can drop current (6.12.y to say) support and keep pushing for egde (following latest mainline).
Of course having rk3588 features being back-ported to 6.12.y would be awesome but nobody here will deal with this. Too much effort to maintain so many patches. It is painful enough for allwinner which is I think our most heavily patched soc family.

[EvilOlaf]

Test images were added. It is to be expected that lots of features won't work with current since rk3588 support is still under heavy development and not even close to all features were present when 6.12 was released. Should be good enough for server applications though.