Screen noise occurs on the PiZero2W and HyperPixel 2.1 Round environment in kernel 6.12.

[Akkiesoft]

Describe the bug

I noticed that when using the HyperPixel 2.1 Round with the PiZero 2W, noise(?) appeared on the screen.
In #7157, I had only verified on the Pi 5, so I hadn't noticed that issue.
Such noise did not occur in kernel 6.6.
When I ported the code from kernel 6.6 to 6.12, I may have overlooked something, but I haven't found it yet...

I tested it with various models, Testing across various models revealed that it functioned correctly on the Pi 5 and Pi 4, but noise occurred on Pi Zero 2W,3A+,3B+,3B,2B and ZeroW.

PiZero2W:

Pi 4:

Steps to reproduce the behaviour

• Prepare new Raspberry Pi OS environment with kernel 6.12
• Add vc4-kms-dpi-hyperpixel2r device tree in config.txt

dtoverlay=vc4-kms-dpi-hyperpixel2r

• Reboot OS

Device (s)

Raspberry Pi Zero 2 W, Raspberry Pi 3 Mod. A+, Raspberry Pi 3 Mod. B, Raspberry Pi 2 Mod. B, Raspberry Pi 3 Mod. B+, Raspberry Pi Zero W / WH

System

raspinfo.txt

Logs

No response

Additional context

No response