[maemo-developers] N800 & Video playback

[From: Daniel Stone]

On Tue, Mar 20, 2007 at 09:31:00AM +0100, ext Klaus Rotter wrote:
> Daniel Stone wrote:
> >On Sun, Mar 18, 2007 at 07:57:36PM +0200, ext Siarhei Siamashka wrote:
> >>Looks like graphics bus on N800 is 3x slower than on Nokia 770. It might 
> >>be caused by inefficient framebuffer driver implementation in its initial
> >>revision. But if it is a hardware issue, getting normal video playback at
> >>native framerate may be troublesome. [...]
> 
> >Unfortunately, it's a hardware issue.  What we can do is get the LCD
> 
> The memory bandwidth to the N800 LCD framebuffer is 3 times slower that 
> the bandwidth in the N770? Is it really _that_ big?

Siarhei's calculations were correct, so, yes.

> What is limiting the bandwidth: The OMAP interface, the LCD controller 
> itself or was it a design issue.

a) and c).  It's just not stable at higher frequencies.

Cheers,
Daniel
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : http://lists.maemo.org/pipermail/maemo-developers/attachments/20070320/109fe06c/attachment.pgp