[Intel-gfx] VGA to PAL RGB

[Eric Anholt]

On Thu, 2008-07-24 at 12:21 +0200, Thomas Elsen wrote:
> Hi all,
> 
> I'm trying to get the following modeline to work with my Mythbuntu.
> This 
> modeline should be perfect for television sets that understand PAL.
> 
> Modeline "768x576pali" 14.76 768 789 858 944 576 580 583 625 -hsync 
> -vsync interlace
> 
> My TV is connected with a custom made cable the joins the horizontal
> and 
> vertical sync signal.
> http://www.nexusuk.org/projects/vga2scart/
> 
> The problem with the current drivers is that the minimal dot clock is 
> defined as 25Mhz. I'd like to know if this is a hardware limitation
> and, 
> if not, what should be done to run the clock at 14,76Mhz.
> 
> I'm using the intel driver with a GMA950 chipset.

The clocking limitations haven't changed that much between the 915-class
hardware and the 965.  I'd check the publicly available documentation to
see what would be required for interlacing support.

-- 
Eric Anholt
eric at anholt.net                         eric.anholt at intel.com


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