Re: DSS2/PM on 3.2 broken?

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Hi,

On Wednesday 11 January 2012 09:43 PM, Joe Woodward wrote:
-----Original Message-----
From: Archit<a0393947@xxxxxx>
To: Joe Woodward<jw@xxxxxxxxxxxxxx>
Cc: Paul Walmsley<paul@xxxxxxxxx>, NeilBrown<neilb@xxxxxxx>,<khilman@xxxxxx>,<linux-omap@xxxxxxxxxxxxxxx>, Tomi Valkeinen
<tomi.valkeinen@xxxxxx>
Date: Wed, 11 Jan 2012 21:22:00 +0530
Subject: Re: DSS2/PM on 3.2 broken?

Hi,

On Wednesday 11 January 2012 08:45 PM, Joe Woodward wrote:
...snip...


Could you enable omapdss debug by adding 'omapdss.debug=1 debug' in
your bootargs and share logs?


<snip>

Archit

I'm not 100% sure what you mean for mmount -t debugfs debugfs /sys/kernel/debuge to do here?

Do you mean to halt the kernel after suspending, but before resuming? If so, how would I go about doing this?


I'd asked for reboot or power off as you have done below. The suspend path looks okay, I asked for the power off to see if there was a dss_runtime_get() was called at the wrong time by some interrupt while suspending.

One difference between the shutdown and suspend logs is that we don't see the prints 'omapdss DSS: dss_save_context' and 'omapdss DSS: context saved', that seems a bit fishy.

I'm not sure how to go ahead from here. We haven't seen this on OMAP4, and I don't think I have tried this on OAMP3. Maybe Tomi has more ideas.

Archit

If I just reboot or poweroff I get the following...

# poweroff
The system is going down NOW!
Sent SIGTERM to all processes
Sent SIGKILL to all processes
Requesting system poweroff
[   43.310607] omapdss CORE: shutdown
[   43.499053] omapdss DISPC: dispc_runtime_put
[   43.504272] omapdss DISPC: dispc_save_context
[   43.509399] omapdss DISPC: context saved, ctx_loss_count 0
[   43.515747] omapdss DSS: dss_runtime_put
[   43.521453] omapdss DSS: dss_runtime_put
[   43.527221] System halted.

# reboot
The system is going down NOW!
Sent SIGTERM to all processes
Sent SIGKILL to all processes
Requesting system reboot
[   25.652008] omapdss CORE: shutdown
[   25.836120] omapdss DISPC: dispc_runtime_put
[   25.841125] omapdss DISPC: dispc_save_context
[   25.846221] omapdss DSS: dss_runtime_put
[   25.851776] omapdss DISPC: context saved, ctx_loss_count 0
[   25.857788] omapdss DSS: dss_runtime_put
[   25.864074] Restarting system.

Cheers,
Joe



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