The hardware can certainly do it, but I'll need to check what the overlay and driver are doing...Is RGB565 (mode 4) working/available in Pi5? I'm testing with a proto hardware and custom DPI bridge using MEDIA_BUS_FMT_RGB565_1X24_CPADHI and the picture is basically green.
One problem is that Linux provides no good way to distinguish modes 3 and 4 -- there's no "media bus format" corresponding to mode 4.
EDIT: Hmm, it looks like a driver bug. It's selecting the pinout for mode 3 but the bit mapping for mode 4. That won't work with either.
A possible workaround for now is to use "mode 6" (RGB666_1X24_CPADHI). But that will assign 2 extra pins (GPIO4,20).
(BTW a general announcement: please avoid "mode 5" (RGB666_1x18) in new designs, as its effective colour depth is limited to RGB444.)
Statistics: Posted by njh — Mon Apr 29, 2024 9:32 am
