http://bugs.freedesktop.org/show_bug.cgi?id=25741





--- Comment #19 from Luca Tettamanti <kronos...@gmail.com>  2010-03-08 05:00:29 
PST ---
(In reply to comment #18)
> Created an attachment (id=33817)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=33817) [details]
> possible fix
> 
> Does this patch help?

No. However fiddling with avivotool as suggested by Philipp fixes the issue.
>From the output of the tool it seems that the kernel driver is setting the
wrong (PLL id swapped?) register:

#. /avivotool regset 0x458 0x00000000
OLD: 0x458 (0458)       0x2a020101 (704774401)
NEW: 0x458 (0458)       0x00000000 (0)

# ./avivotool regset 0x45c 0x00000000
OLD: 0x45c (045c)       0x00000000 (0)
NEW: 0x45c (045c)       0x00000000 (0)

Setting 0x458 (AVIVO_P1PLL_INT_SS_CNTL) stops the flickering on the external
VGA monitor.


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