18bpp display on OMAP3

[Vladimir Pantelic]

Patrick wrote:
> Hello all,
>
> I am currently designing a new board based on OMAP3530 (Gumstix) with a 18bpp touchscreen. According to the Ti
> Technical Ref. Manual (page 2164) the Display controller support two packing mode: the "Loosely Packed" that use
> 24bits buts only the 6 MSB bits of each color and the "Packed" mode that compact all the 18bpp.
>
> I would like to know which mode is recommended to use depending on the fb driver and eventually on the POWERVR SGX
> driver.

only one of the modes (packed iirc) supports HW dithering in the DSS subsystem ...