Why is there no 8 bpp option for GFXMMU?

[CBald]

My framebuffer is 8 bpp in L8 format, but under GFXMMU > LUT Configuration > Display BPP, there is no 8 bpp option? Am I missing something? Considering the LTDC supports 8 bpp framebuffers, this should definitely be an option.

Currently running the latest CubeIDE with whatever CubeMX is built in.

[TDK]

Some chips don't have enough pins to support all modes. What chip are you using?

[CBald]

Pretty sure that's not it, but for reference I'm using an STM32L4R9AI with DSI interface (so pins aren't the issue)

[TDK]

You're right, it's unlikely to be that. Probably just one of those things where even though the underlying hardware supports it, the HAL/CubeMX infrastructure isn't set up to support it yet. L4+ is pretty new.

[CBald]

L4+ and the GFXMMU have been around for 3 years now (date code on my eval board is 8th week, 2017)... I'd expect them to have this sorted out by now. They have 16, 24, and 32bpp options, I just don't understand why 8bpp isn't there. Should be trivial to add. Is there a place I can feature request this?