From: Sakari Ailus <sakari.ailus@iki.fi>
To: anish singh <anish198519851985@gmail.com>
Cc: Enrico <ebutera@users.berlios.de>,
linux-media@vger.kernel.org, t-kristo@ti.com
Subject: Re: omap3isp as a wakeup source
Date: Tue, 13 Sep 2011 09:49:32 +0300 [thread overview]
Message-ID: <4E6EFCFC.5030803@iki.fi> (raw)
In-Reply-To: <CAK7N6vpr8uJSHMgTnrd=FrnvYf_Oqy8D3ua__S63T3nEvqaKGw@mail.gmail.com>
anish singh wrote:
> On Tue, Sep 13, 2011 at 1:58 AM, Sakari Ailus <sakari.ailus@iki.fi> wrote:
>> On Mon, Sep 12, 2011 at 04:50:42PM +0200, Enrico wrote:
>>> Hi,
>>
>> Hi Enrico,
>>
>>> While testing omap3isp+tvp5150 with latest Deepthy bt656 patches
>>> (kernel 3.1rc4) i noticed that yavta hangs very often when grabbing
>>> or, if not hanged, it grabs at max ~10fps.
>>>
>>> Then i noticed that tapping on the (serial) console made it "unblock"
>>> for some frames, so i thought it doesn't prevent the cpu to go
>>> idle/sleep. Using the boot arg "nohlt" the problem disappear and it
>>> grabs at a steady 25fps.
>>>
>>> In the code i found a comment that says the camera can't be a wakeup
>>> source but the camera powerdomain is instead used to decide to not go
>>> idle, so at this point i think the camera powerdomain is not enabled
>>> but i don't know how/where to enable it. Any ideas?
>>
>> I can confirm this indeed is the case --- ISP can't wake up the system ---
>> but don't know how to prevent the system from going to sleep when using the
>> ISP.
> Had it been on android i think wakelock would have been very useful.
I believe there are proper means to do this using more standard methods
as well. Not being a PM expert, I don't know how.
Cc Tero.
--
Sakari Ailus
sakari.ailus@iki.fi
next prev parent reply other threads:[~2011-09-13 6:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-12 14:50 omap3isp as a wakeup source Enrico
2011-09-12 20:28 ` Sakari Ailus
2011-09-13 6:25 ` anish singh
2011-09-13 6:49 ` Sakari Ailus [this message]
2011-09-13 9:48 ` Tero Kristo
2011-09-13 10:08 ` Enrico
2011-09-13 10:29 ` Tero Kristo
2011-09-13 13:25 ` Enrico
2011-09-20 9:19 ` Enrico
2011-09-13 10:28 ` Enrico
2011-09-13 11:28 ` Sakari Ailus
2011-09-13 9:08 ` Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4E6EFCFC.5030803@iki.fi \
--to=sakari.ailus@iki.fi \
--cc=anish198519851985@gmail.com \
--cc=ebutera@users.berlios.de \
--cc=linux-media@vger.kernel.org \
--cc=t-kristo@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.