The ati petition

[Vladimir Dergachev]

>>     RE_CLK:     0   - Dynamic
>>                 1   - Force on
>>
>> To me this would mean that the RE (Render Engine) clock is not active if
>> there is nothing for the render engine to do.
>>
>> Keep in mind that this is mere speculation. Also, some ATI sample code
>> writes 1 to such registers with comment that "some versions of ASIC do not
>> properly implement dynamic clocks". Linux drivers do not have this code
>> though, so this might have been fixed in production version.
>
> I recently applied a patch from ati for enabling dynamic clock scaling
> to xorg cvs.  enable it with option "DynamicClocks".  it provides a
> noticeable increase in battery life on my m6 laptop.

Cool ! Does this also imply that HEAD is unfrozen ?

Alex, could you clear up one thing for me - does current HEAD work with 
DRM ? At least r200 chips ?

                       thank you !

                          Vladimir Dergachev

>
> Alex
>
>>
>>                          best
>>
>>                            Vladimir Dergachev
>>
>>> The basic clock rate used nowadays is high enough and the area of the
>>> chip die is big enough that these issues are non-negligeable. Of course,
>>> restarting the stopped blocks can also be a bit tricky for the chip
>>> designers.
>>>
>>> Another rather popular technique is to step the clock speed but that is
>>> much more complex to implement for the designers which is why few ASICs
>>> really do it.
>>>
>>> Of course, this is off-topic but I could not resist. Bad bad me. It
>>> should be said I have minimum experience in this domain so, the usual
>>> disclaimers apply.
>>>
>>> regards,
>>> Mathieu
>>> --
>>> Mathieu Lacage <mathieu at gnu.org>
>>>
>>>
>>> _______________________________________________
>>> xorg mailing list
>>> xorg at freedesktop.org
>>> http://freedesktop.org/mailman/listinfo/xorg
>>>
>>
>>
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>