Describe the bug

The vc4-kms-dpi-generic-overlay.dts overlay is missing some capability that previously existed for changing the color order of DPI output. It gives only bgr888 and rgb888 as options. I developed a product using red instead of green in the middle group, and I'm currently unable to use the KMS DPI overlay.

The previous DPI method gave 4 color orders for RGB
rgb_order:
1: DPI_RGB_ORDER_RGB
2: DPI_RGB_ORDER_BGR
3: DPI_RGB_ORDER_GRB
4: DPI_RGB_ORDER_BRG

This is an identical issue to #6155, but is now needed for the Raspberry Pi 5 and CM5.

The previous fix was effective for the CM4, and I was able to compile an overlay that modifed the color order and enabled i2c, but this does not work on the CM5. Some discussion occurred about doing something similar for the RP1 #6156.

Steps to reproduce the behaviour

Use the KMS DPI overlay on the CM5 with a product (such as my PSPi 6) that makes use of the previously available DPI color orders that use red in the center group instead of green.

Device (s)

Raspberry Pi 5, Other

System

Raspberry Pi OS Bookworm

Logs

No response

Additional context

No response