Re: new PM branch available

[Kevin Hilman <khilman@deeprootsystems.com>]

Koen Kooi <k.kooi@student.utwente.nl> writes:

> Op 23 jan 2009, om 13:00 heeft Nayak, Rajendra het volgende geschreven:
>
>>
>>
>>> -----Original Message-----
>>> From: Högander Jouni [mailto:jouni.hogander@nokia.com]
>>> Sent: Friday, January 23, 2009 4:52 PM
>>> To: Nayak, Rajendra
>>> Cc: Kevin Hilman; linux-omap@vger.kernel.org
>>> Subject: Re: new PM branch available
>>>
>>> "ext Nayak, Rajendra" <rnayak@ti.com> writes:
>>>
>>>>> I did some testing today on my 3.0GP 3430SDP. This is with
>>> the omap_3430sdp_min_defconfig.
>>>>>
>>>>> 1) Idle.
>>>>> echo -n 1 > /sys/power/clocks_off_while_idle
>>>>> echo -n 1 > /sys/power/enable_off
>>>>> Could not hit RET. something seems to be still active. Not
>>> sure if it could be something
>>>>> to do with this error that's thrown while bootup
>>>>>
>>>>> <6>Disabling unused clock "dpll5_ck"
>>>>> Disabling unused clock "dpll5_ck"
>>>>> <3>clock: dpll5_ck failed transition to 'locked'
>>>>> clock: dpll5_ck failed transition to 'locked'
>>>>>
>>>>> This is the same results I see on my SDP.
>>>>>
>>>>> Looking at the registers, I am pretty sure it is the D2D
>>> clockdomain
>>>>> that still has activity, but due to very poor Stacked-mode
>>> docs and no
>>>>> responses to the D2D questions asked to TI I have not been able to
>>>>> figure this one out.
>>>>>
>>>>> Help debugging this would be greatly appreciated.
>>>>
>>>> I looked some more into this today and saw that the hang is
>>> indeed caused
>>>> due to some kind of debug console going dead. The system
>>> was still looping in the
>>>> idle thread. I could even do a telnet remotely to my board and take
>>>> some debug dumps..
>>>
>>> This might help you:
>>
>> Yup, this does help. There's no hang now either in idle or in suspend.
>> Not sure why this was affecting only the SDP while the pm branch seems
>> to function without this for beagle and other omap3 platforms?
>
> I get 'hangs' on the beagle as well with the PM branch. They mostly
> seem to happen when I boot a fresh rootfs and the packagemanager runs
> a lot of postinst scripts without any form of user interaction.
>

Koen,

What are your /sys/power/clocks_off_while_idle and ../sleep_while_idle
set to?

Do you see the hangs when both of these are zero?

Kevin
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