SR2: VDD autocomp is not active

SR2: VDD autocomp is not active

[tarek attia]

Hi all,

Each time I enable the ondemand governor ,it works fine for a while
,but each time the frequency is changed this messages appears :-

SR1: VDD autocomp is not active

then it works again ,but after small amount of time this messages
appears followed by hang up for the overall system

SR2: VDD autocomp is not active


Any one has an idea ??


Regards,
-- 
tarek

Re: SR2: VDD autocomp is not active

[Romit Dasgupta]

tarek attia wrote:
> Hi all,
> 
> Each time I enable the ondemand governor ,it works fine for a while
> ,but each time the frequency is changed this messages appears :-
> 
> SR1: VDD autocomp is not active
> 
> then it works again ,but after small amount of time this messages
> appears followed by hang up for the overall system
> 
> SR2: VDD autocomp is not active
> 
> 

try this:
echo 1 > /sys/power/sr_vdd1_autocomp; echo 1 > /sys/power/sr_vdd2_autocomp

Re: SR2: VDD autocomp is not active

[tarek attia]

Thank you for your reply ,

But another thing appears and also the system hangs up after
activation the ondemand governor

OPP4 doesn't support SmartReflex
SR1: VDD autocomp not activated

P.S:- I did as you told me by echo 1>sys/power/,,,etc


Regards,

On Mon, Dec 28, 2009 at 9:48 AM, Romit Dasgupta <romit@ti.com> wrote:
>
> tarek attia wrote:
> > Hi all,
> >
> > Each time I enable the ondemand governor ,it works fine for a while
> > ,but each time the frequency is changed this messages appears :-
> >
> > SR1: VDD autocomp is not active
> >
> > then it works again ,but after small amount of time this messages
> > appears followed by hang up for the overall system
> >
> > SR2: VDD autocomp is not active
> >
> >
>
> try this:
> echo 1 > /sys/power/sr_vdd1_autocomp; echo 1 > /sys/power/sr_vdd2_autocomp
>



--
tarek

Re: SR2: VDD autocomp is not active

[Romit Dasgupta]

>>> Each time I enable the ondemand governor ,it works fine for a while
>>> ,but each time the frequency is changed this messages appears :-
>>>
>>> SR1: VDD autocomp is not active
>>>
>>> then it works again ,but after small amount of time this messages
>>> appears followed by hang up for the overall system
>>>
>>> SR2: VDD autocomp is not active
>>>
>>>
>> try this:
>> echo 1 > /sys/power/sr_vdd1_autocomp; echo 1 > /sys/power/sr_vdd2_autocomp
What platform are you using? Also what is your git HEAD?
I can smell 3630... ;-) please confirm.

Re: SR2: VDD autocomp is not active

[tarek attia]

Basically I'm working on beagleboard rev B5 .
I'm not using the pm branch of kevin ,,however I'm using source files
from the rowboat project (Android) ,just I enabled the cpufreq and
smartreflex in the kernel configuration while I'm building the linux
kernel of Android .

Any Idea :-) ??

On Tue, Dec 29, 2009 at 2:30 PM, Romit Dasgupta <romit@ti.com> wrote:
>
> >>> Each time I enable the ondemand governor ,it works fine for a while
> >>> ,but each time the frequency is changed this messages appears :-
> >>>
> >>> SR1: VDD autocomp is not active
> >>>
> >>> then it works again ,but after small amount of time this messages
> >>> appears followed by hang up for the overall system
> >>>
> >>> SR2: VDD autocomp is not active
> >>>
> >>>
> >> try this:
> >> echo 1 > /sys/power/sr_vdd1_autocomp; echo 1 > /sys/power/sr_vdd2_autocomp
> What platform are you using? Also what is your git HEAD?
> I can smell 3630... ;-) please confirm.



--
tarek
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Re: SR2: VDD autocomp is not active

[Romit Dasgupta]

tarek attia wrote:
> Basically I'm working on beagleboard rev B5 .
> I'm not using the pm branch of kevin ,,however I'm using source files
> from the rowboat project (Android) ,just I enabled the cpufreq and
> smartreflex in the kernel configuration while I'm building the linux
> kernel of Android .
> 

Do you have this function in your code?
'omap2_clk_init_cpufreq_table' If not please use pm branch.

Re: SR2: VDD autocomp is not active

[tarek attia]

Thank you :) ,

I found the "omap2_clk_init_cpufreq_table" function in the kernel
image installed on my board ,and the hanging up is not permanent
,sometimes occurs and some time doesn't .

So what the reason may be for this case? ..also what is the usage of
"sr_vdd1_autocomp" ??

I know that I'm bothering you,,but thanks for your reply in advance :-)

Regards,

On Tue, Dec 29, 2009 at 4:00 PM, Romit Dasgupta <romit@ti.com> wrote:
> tarek attia wrote:
>> Basically I'm working on beagleboard rev B5 .
>> I'm not using the pm branch of kevin ,,however I'm using source files
>> from the rowboat project (Android) ,just I enabled the cpufreq and
>> smartreflex in the kernel configuration while I'm building the linux
>> kernel of Android .
>>
>
> Do you have this function in your code?
> 'omap2_clk_init_cpufreq_table' If not please use pm branch.
>



-- 
tarek

Re: SR2: VDD autocomp is not active

[Romit Dasgupta]

tarek attia wrote:
> Thank you :) ,
> 
> I found the "omap2_clk_init_cpufreq_table" function in the kernel
> image installed on my board ,and the hanging up is not permanent
> ,sometimes occurs and some time doesn't .
> 
> So what the reason may be for this case? ..also what is the usage of
> "sr_vdd1_autocomp" ??
> 
> I know that I'm bothering you,,but thanks for your reply in advance :-)
> 
Nothing to be bothered. Always glad to reply. sr_vdd1_autocomp enables Smart
reflex voltage autocompensation for VDD1 voltage rail.
You do seem to have the low level cpufreq driver in place. May be you can try
with pm branch.

Re: SR2: VDD autocomp is not active

[tarek attia]

Thank you very much :-) .

Appreciate it really .

Regards,

On Wed, Dec 30, 2009 at 8:36 AM, Romit Dasgupta <romit@ti.com> wrote:
> tarek attia wrote:
>> Thank you :) ,
>>
>> I found the "omap2_clk_init_cpufreq_table" function in the kernel
>> image installed on my board ,and the hanging up is not permanent
>> ,sometimes occurs and some time doesn't .
>>
>> So what the reason may be for this case? ..also what is the usage of
>> "sr_vdd1_autocomp" ??
>>
>> I know that I'm bothering you,,but thanks for your reply in advance :-)
>>
> Nothing to be bothered. Always glad to reply. sr_vdd1_autocomp enables Smart
> reflex voltage autocompensation for VDD1 voltage rail.
> You do seem to have the low level cpufreq driver in place. May be you can try
> with pm branch.
>



-- 
tarek