Re: PM branch updates: 3430sdp and omap3evm results

[Kevin Hilman <khilman@deeprootsystems.com>]

Ramesh Gupta Guntha <grgupta77@gmail.com> writes:

> Hi Kevin,
>
>
> On 2/4/09, Kevin Hilman <khilman@deeprootsystems.com> wrote:
>> Ramesh Gupta Guntha <grgupta77@gmail.com> writes:
>>
>> > Kevin,
>> >
>> >
>> > On 2/4/09, Kevin Hilman <khilman@deeprootsystems.com> wrote:
>> >> Ramesh Gupta Guntha <grgupta77@gmail.com> writes:
>> >>
>> >> > Hi,
>> >> >
>> >> >  I am able to resolve all other issues with this pm branch except one issue,
>> >> >
>> >> > I am not able to enable the iva2 clock once system is suspended and
>> >> > resumed, I am getting below messages.
>> >> >>
>> >> >> <3>clock: dpll2_ck failed transition to 'locked'
>> >> >> clock: dpll2_ck failed transition to 'locked'
>> >> >> <3>clock: dpll2_ck failed transition to 'locked'
>> >> >> clock: dpll2_ck failed transition to 'locked'
>> >> >
>> >> > Once after booting ( without adding bridgedriver/ installing bridgedriver)
>> >> > CM_CLKEN_PLL_IVA2 value shows as 0x37 indicates IVA2 DPLL in locked mode.
>> >> >
>> >> > once after system suspend the value is not restored I am seeing that as
>> >> >  0x11 indicates IVA2 DPLL is low power stop mode.
>> >> >
>> >> > Can any one please provide your inputs on the above error? I tried
>> >> > reconfiguring the CM_CLKEN_PLL_IVA2 to lock mode but still I am seeing
>> >> > the same messages as above while enabling iva2 clock.
>> >>
>> >> Are you suspending into retention or off-mode?
>> >
>> > I am suspending into Off mode.
>> >
>>
>> Do you see this problem when only going into retention?
>>
>> If not, sounds like we're missing some registers being saved/restored
>> across off-mode.
>
> I am seeing this issue only with OFF mode , retention works fine for me,
> yeah, looks like some registers are not restored properly across off mode.
> please let me know your inputs on this.
>

I have just updated the PM branch with a fix from Jouni to
save/restore CM_CLKSEL1_PLL_IVA2.

Can you try the latest PM branch?

Thanks,

Kevin