* PM: timeout waiting for write of PM_WKEN_WKUP.EN_IO_CHAIN
@ 2009-05-14 15:57 Kevin Hilman
2009-05-15 6:26 ` Kalle Jokiniemi
0 siblings, 1 reply; 2+ messages in thread
From: Kevin Hilman @ 2009-05-14 15:57 UTC (permalink / raw)
To: Kalle Jokiniemi; +Cc: linux-omap
Kalle,
In your "Enable IO-CHAIN wakeup" patch[1], you set a timout based on
1000 tries of reading back from PM_WKST_WKUP.
Just curious how you came up with that value.
On ES3.1 3430SDP, some TI folks are seeing that timeout warning
every time hitting idle.
Kevin
[1] http://marc.info/?l=linux-omap&m=123807750921423&w=2
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: PM: timeout waiting for write of PM_WKEN_WKUP.EN_IO_CHAIN
2009-05-14 15:57 PM: timeout waiting for write of PM_WKEN_WKUP.EN_IO_CHAIN Kevin Hilman
@ 2009-05-15 6:26 ` Kalle Jokiniemi
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Jokiniemi @ 2009-05-15 6:26 UTC (permalink / raw)
To: Kevin Hilman; +Cc: linux-omap@vger.kernel.org
On Thu, 2009-05-14 at 18:57 +0300, Kevin Hilman wrote:
> Kalle,
>
> In your "Enable IO-CHAIN wakeup" patch[1], you set a timout based on
> 1000 tries of reading back from PM_WKST_WKUP.
>
> Just curious how you came up with that value.
I tested it around a few times, and the loop seemed to run 2 iterations
max. 1000 is just a random (big enough) number that I think should work
if everything is ok.
>
> On ES3.1 3430SDP, some TI folks are seeing that timeout warning
> every time hitting idle.
Then there is something wrong and the io-chain enable is not working.
Please try removing the timeout and see if it hangs completely. I don't
have a SDP to test on.
- Kalle
>
> Kevin
>
> [1] http://marc.info/?l=linux-omap&m=123807750921423&w=2
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-05-14 15:57 PM: timeout waiting for write of PM_WKEN_WKUP.EN_IO_CHAIN Kevin Hilman
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