Pi5 works fine with the display made by Raspberry Pi, and with some 3rd party ones (eg Waveshare's through the vc4-kms-dsi-waveshare-panel overlay).
What you are looking at is a third party who has cloned the original Pi panel with something that appeared close enough.
Pi5 does update a few parameters with regard the DSI spec, but we test against the device(s) the drivers were written for, ie the Raspberry Pi panel. If these clones don't like those changes, then I'm afraid that is not Raspberry Pi's fault.
Looking at that particular panel, I suspect it is also trying to power itself solely via the 3.3V rail on the FFC. That has never been specified for heavy loads like a display (hence the Pi panel having a separate 5V supply), so if it may be that they have power issues. I seem to recall someone with a Pi5 trying 2 of these screens that power themselves off the 3.3V rail, and it sags too much.
What you are looking at is a third party who has cloned the original Pi panel with something that appeared close enough.
Pi5 does update a few parameters with regard the DSI spec, but we test against the device(s) the drivers were written for, ie the Raspberry Pi panel. If these clones don't like those changes, then I'm afraid that is not Raspberry Pi's fault.
Looking at that particular panel, I suspect it is also trying to power itself solely via the 3.3V rail on the FFC. That has never been specified for heavy loads like a display (hence the Pi panel having a separate 5V supply), so if it may be that they have power issues. I seem to recall someone with a Pi5 trying 2 of these screens that power themselves off the 3.3V rail, and it sags too much.
Statistics: Posted by 6by9 — Wed Jan 31, 2024 5:34 pm