[RFC] sunxi: video: Porting sun6i-mipi-dsi driver from Linux v6.10 to Mainline

[Jian Zhang]

Hi all,

I am working on U-Boot mainline (targeting the v2026.04 cycle) and I plan
to implement splash screen support for sunxi platforms (t113s) via MIPI DSI.

Currently, I have mainline booting and loading the kernel on my hardware,
but I lack display output in the bootloader. My plan is to backport the
sun6i-mipi-dsi and associated DPHY logic from Linux kernel v6.10. Given the
shift toward OF_UPSTREAM in recent U-Boot releases, I intend to leverage
the existing kernel Devicetree bindings as much as possible.

Before I proceed further, I’d like to seek guidance to ensure I’m not
heading in the wrong direction:

   1.

   *Ongoing Work:* Is anyone else currently working on MIPI DSI for sunxi?
   I want to avoid duplicating efforts if there are existing WIP patches or
   branches.
   2.

   *Driver Structure:* Does the community prefer a minimal "U-Boot-style"
   driver, or a more direct port of the Linux DRM bridge/host structure
   (similar to how some Rockchip DSI drivers were recently integrated)?

Thanks and Best regards,

Jian Zhang