On Wed, 22 Jun 2011, Vishwanath Sripathy wrote:
> On Wed, Jun 22, 2011 at 3:50 PM, Amit Kucheria <amit.kuche...@linaro.org>
> wrote:
> > On 11 Jun 22, Vishwanath Sripathy wrote:
> >> Hi Nicolas,
> >>
> >> Can you pls pull below patch from 2.6.39 mainline kernel into 11.5
> >> Linaro kernel? This would fix some of the DVFS related issues seen on
> >> OMAP3.
> >> Patch:
> >> commit 5fd2a84ab3c8b87176e25db1d98c5cc34043a669
> >> Author: Avinash H.M <avinas...@ti.com>
> >> OMAP3: set the core dpll clk rate in its set_rate function
> >>
> >> Vishwa
> >
> > After this fix, can CPU_FREQ be re-enabled on OMAP3?
> cpufreq as such will work as expected and will scale MPU and L3
> frequency based on system load. However if any driver is not
> requesting for the required l3 frequency, then we might start seeing
> issues at driver level (like FIFO underflow etc due to l3 running at
> lower rate).
>
> So my suggestion is not to keep ondemand as the default governor and
> if someone wants to experiment, they can enable it.
I merged the fix to linaro-2.6.38 and pushed out.
What about linaro-2.6.39 which is the base for the 11.06 release due
next week? Does it work properly there? The above commit is already
included, but I would like to know how things are working wrt power
management in that kernel.
Nicolas
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