gma500_gfx: spread spectrum clocking?

2015-04-07 Thread George McCollister
Looks like these are the magic bits that need to be set:

dpll |= (7<<9) | (1<<13) | (1<<14);

Anyone happen to have proper descriptions for these bits so I could
add them to psb_intel_reg.h or thoughts on how/where an option could
be exposed to enable these?

On Mon, Apr 6, 2015 at 4:48 PM, George McCollister
 wrote:
> emgd had an option to enable spread spectrum clocking on LVDS. The
> documentation is vague but the setting that works is:
> Option "ALL/1/Port/4/Attr/43""7"
>
> Anyone have any idea how to set this with gma500_gfx or if it doesn't
> support it, how to put the hardware in this mode?
>
> Thanks,
> George McCollister


gma500_gfx: spread spectrum clocking?

2015-04-06 Thread George McCollister
emgd had an option to enable spread spectrum clocking on LVDS. The
documentation is vague but the setting that works is:
Option "ALL/1/Port/4/Attr/43""7"

Anyone have any idea how to set this with gma500_gfx or if it doesn't
support it, how to put the hardware in this mode?

Thanks,
George McCollister