[Bug 5876] big xvideo issues with ATI Radeon RV100 family (Mobility M6 LY, ...)

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https://bugs.freedesktop.org/show_bug.cgi?id=5876          
     




------- Additional Comments From sroland at tungstengraphics.com  2006-12-04 12:39 -------
(In reply to comment #20)
> Removing just that call to OUTPLL is insufficient, so there is something more
to it.
Are you sure you got the right OUTPLL? I've verified that no other PLL reads or
writes occur other than there when playing a video.
I've also tried enabling the chip errata on my chip rv250. Guess what happens -
nothing. Well actually something does happen, cpu time will be LOWER. The likely
reason being that X won't consume cpu cycles during the usleep, otherwise it
probably would have had to wait for RADEONWaitForFIFO anyway since the gpu is
still busy uploading the data (this effect probably could only be seen with dma
for xv)...
And I was wrong assuming you could still get 200fps even with those pll erratas.
INPLL causes this wait just as well, so the max would be 100fps.          
     
     
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