Re: PM(?) problems on v3.3-rc1 on OMAP3

Govindraj
2012-01-20T12:45:23Z

On Fri, Jan 20, 2012 at 5:31 PM, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
> On Fri, 2012-01-20 at 17:26 +0530, Govindraj wrote:
>> On Fri, Jan 20, 2012 at 4:03 PM, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
>
>> > Is there a way to lock the OPP to the full power OPP?
>> >
>>
>> btw,
>>
>> I think enabling cpu_idle and performance governor to should ensure that.
>>
>> However enabling performance governor boot fails.
>
> I thought so too, and tried it but got the same crash as you.
>
> However, I'd imagine that if I don't enable CPU idle or the governors,
> the board would stay in full power mode always. But this doesn't seem to
> be the case.
>

AFAIK if we are not using cpuidle/governors
then opp value will be retained from what the bootloader configures it.

However I am not sure whether bootloader will set it in highest opp.
Still trying to find a way to know it.

> Then again, I don't see how CPU power management could affect the DSS
> directly. So it's probably something like: cpu goes to RET -> something
> else is allowed go to lower power state (L3?) -> DSS breaks.