Lite5200 PCI not working

Wolfgang Denk wd at
Fri Jul 2 17:22:06 EST 2004

In message <40E4E804.5010606 at> you wrote:
> Do you meaean that responsibility of byte order is left to application
> level ?

No. The graphic drivers are responsible for it.

> Linux fbdev just maps display memory to user application space and so it
> cant do anything for how R,G,B bits are ordered within word. It is
> then responsibility to GUI-engine ( X-server, Embedded-QT ) to
> handle this ordering.

This is why it is impossible to use a simple  framebuffer  driver  on
the  Coral-P  in  16  bit mode. You can run a framebuffer with 24 bpp
(and actually our first demo dreiver was doing this), but it ain't no

Also, with  a  framebuffer  driver  you  miss  all  the  options  for
accelerated graphics provided by the Coral-P engine.

This is why we implemented an accelerated X11 driver for the Coral-P.

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at
Today is the yesterday you worried about tomorrow.

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