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From: Scott Wood <scottwood@freescale.com>
To: Vineeth <vneethv@gmail.com>
Cc: linux-embedded@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: Timer interrupt on Linux 3.0.3
Date: Wed, 21 Sep 2011 14:41:33 -0500	[thread overview]
Message-ID: <4E7A3DED.9030402@freescale.com> (raw)
In-Reply-To: <CAFbQSaBcdLCoVY471mVLAyM=eYDSN77=DODPasMaAEm6pRm7jQ@mail.gmail.com>

On 09/21/2011 01:56 AM, Vineeth wrote:
>>> What was the issue?  You really should try to make this work rather than
>>> hack around it.
> 
> what we found was the decrementer is not generating an exception when it
> becomes 0. and the timebase registers are not getting incremented too.

Does the decrementer actually tick until it reaches zero, or do it and
the timebase never tick?

Is the TBEN input to the CPU asserted?

-Scott

WARNING: multiple messages have this Message-ID (diff)
From: Scott Wood <scottwood@freescale.com>
To: Vineeth <vneethv@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-embedded@vger.kernel.org
Subject: Re: Timer interrupt on Linux 3.0.3
Date: Wed, 21 Sep 2011 14:41:33 -0500	[thread overview]
Message-ID: <4E7A3DED.9030402@freescale.com> (raw)
In-Reply-To: <CAFbQSaBcdLCoVY471mVLAyM=eYDSN77=DODPasMaAEm6pRm7jQ@mail.gmail.com>

On 09/21/2011 01:56 AM, Vineeth wrote:
>>> What was the issue?  You really should try to make this work rather than
>>> hack around it.
> 
> what we found was the decrementer is not generating an exception when it
> becomes 0. and the timebase registers are not getting incremented too.

Does the decrementer actually tick until it reaches zero, or do it and
the timebase never tick?

Is the TBEN input to the CPU asserted?

-Scott

  reply	other threads:[~2011-09-21 19:41 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-16 11:43 Timer interrupt on Linux 3.0.3 Vineeth
2011-09-16 11:43 ` Vineeth
2011-09-16 17:03 ` Scott Wood
2011-09-16 17:03   ` Scott Wood
2011-09-21  6:56   ` Vineeth
2011-09-21  6:56     ` Vineeth
2011-09-21 19:41     ` Scott Wood [this message]
2011-09-21 19:41       ` Scott Wood
2011-09-22  6:22       ` MohanReddy koppula
2011-09-22  6:22         ` MohanReddy koppula
2011-09-26  9:11         ` Vineeth
2011-09-26  9:11           ` Vineeth

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