From: Michael Jones <michael.jones@matrix-vision.de>
To: Bastian Hecht <hechtb@googlemail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>,
Linux Media Mailing List <linux-media@vger.kernel.org>
Subject: Re: OMAP3530 ISP irqs disabled
Date: Wed, 03 Nov 2010 13:58:35 +0100 [thread overview]
Message-ID: <4CD15C7B.2010008@matrix-vision.de> (raw)
In-Reply-To: <AANLkTimDN73S9ZWii80i9LtHtsHtPQPsMdEdGB+C5nYy@mail.gmail.com>
Bastian Hecht wrote:
>
> I enabled isr debugging (#define ISP_ISR_DEBUG) and see that only 1
> HS_VS_event is generated per second. 1fps corresponds to my clocking,
> so 1 vs per second is fine. But shouldn't I see about 2000 hs
> interrupts there too? HS_VS_IRQ is described as "HS or VS synchro
> event".
HS_VS_IRQ is _either_ VS _or_ HS interrupts, but not both. The SYNC_DETECT bits in ISP_CTRL determines which. For writing into memory, the ISP only needs to react per frame, not per line, so it is set up to trigger on VS.
--
Michael Jones
MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler
Registergericht: Amtsgericht Stuttgart, HRB 271090
Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner
next prev parent reply other threads:[~2010-11-03 12:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-03 9:42 OMAP3530 ISP irqs disabled Bastian Hecht
2010-11-03 12:47 ` Bastian Hecht
2010-11-03 12:58 ` Michael Jones [this message]
2010-11-03 13:26 ` Bastian Hecht
2010-11-04 3:30 ` Laurent Pinchart
2010-11-03 13:20 ` Sakari Ailus
2010-11-03 13:38 ` Bastian Hecht
2010-11-04 3:34 ` Laurent Pinchart
2010-11-04 8:34 ` Bastian Hecht
2010-11-04 12:53 ` Bastian Hecht
2010-11-05 10:45 ` Bastian Hecht
2010-11-05 11:09 ` Bastian Hecht
2010-11-05 14:25 ` Michael Jones
2010-11-05 15:18 ` Bastian Hecht
2010-11-07 4:54 ` Sakari Ailus
2010-11-07 9:11 ` Bastian Hecht
2010-11-08 3:15 ` Laurent Pinchart
2010-11-08 12:26 ` Michael Jones
2010-11-09 23:10 ` Laurent Pinchart
2010-11-08 10:06 ` Michael Jones
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