Re: PM branch updates: 3430sdp and omap3evm results

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Hi Kevin,


On 1/27/09, Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> wrote:
> Hello,
>
> I've updated the PM branch with a couple of fixes that get it working
> on the 3430SDP.
>
> For it to work on the SDP, you need the latest u-boot from the
> omapzoom u-boot tree[1].  This fixes the problems I was having with
> the D2D clockdomain remaining active or hanging upon clock disable.

I have tested this on my 3430SDP, I am seeing all domains hitting the off mode.

But I am seeing some issues while waking up iva domain after suspend.

There are couple of cases.

1. after booting the kernel
I run
echo 1 > /sys/power/clocks_off_while_idle
echo 1 > /sys/power/voltage_off_while_idle
echo 1 > /sys/power/enable_off_mode

and
echo mem > /sys/power/state
# echo mem > /sys/power/state
<6>PM: Syncing filesystems ... PM: Syncing filesystems ... done.
done.
Freezing user space processes ... Freezing user space processes ... (elapsed 0.0
0 seconds) (elapsed 0.00 seconds) done.
done.
Freezing remaining freezable tasks ... Freezing remaining freezable tasks ... (e
lapsed 0.00 seconds) (elapsed 0.00 seconds) done.done.

Suspending console(s) (use no_console_suspend to debug)
Suspending console(s) (use no_console_suspend to debug)
<6>Successfully put all powerdomains to target state
Successfully put all powerdomains to target state
Restarting tasks ... Restarting tasks ... done.
done.
#

If I install bridgedriver and enable iva2 clock I am getting below messages
clock: dpll2_ck failed transition to 'locked'

<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'

2. I run below commands as soon as kernel is booted.
echo 1 > /sys/power/clocks_off_while_idle
echo 1 > /sys/power/voltage_off_while_idle
echo 1 > /sys/power/enable_off_mode

installed bridge driver, loaded an dsp image(which also enables
iva2_ck, gpt6_ick/fck, mail box clocks)



I run system suspend, I am seeing all powerdomains enters into OFF
mode, but after this I am not able to wakeup iva domain, I reenabled
clocks but no use.

3. Without the option
echo 1 > /sys/power/clocks_off_while_idle every thing works fine but
perdomain is not hitting the off mode.


Please let me know any thoghts on these issues I am seeing.

-- 
Thanks
Ramesh Gupta G
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