Re: OMAP 3 ISP

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Hi Laurent,
For me even ISP revision print log is not displaying and moreover when I am checking the interrupts using 
cat /proc/interrupts
Only iommu interrupt is showing for interrupt line 24

Seems ISP probe function is not at all getting called
Right now board is not available for me so that I can't post here complete log

Can u please send me working Linux kernel repository link for omap35x torpedo kit


Thanks
Ritesh

Sent from my iPod

On 29-May-2012, at 3:52 PM, Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:

> Hi Enrico,
> 
> On Tuesday 29 May 2012 12:08:43 Enrico wrote:
>> On Tue, May 29, 2012 at 10:15 AM, jean-philippe francois wrote:
>>> 2012/5/29 Alex Gershgorin <alexg@xxxxxxxxxxxxxx>:
>>>> Hi Ritesh,
>>>> 
>>>> Please send in the future CC to laurent.pinchart@xxxxxxxxxxxxxxxx and
>>>> linux-media@xxxxxxxxxxxxxxx>> 
>>>>> Hi Alex,
>>>>> I also started working with OMAP35x torpedo kit, I successful compile
>>>>> Linux 3.0 and ported on the board. Device is booting correctly but
>>>>> probe function in omap3isp module not getting called. Please help me
>>>> 
>>>> You have relevant Kernel boot messages?
>>>> You can also find information in media archives OMAP 3 ISP thread.
>>>> 
>>>> Regards,
>>>> Alex
>>> 
>>> Hi, I had a similar problem with a 2.6.39 kernel, that was solved with
>>> a 3.2 kernel.
>>> When compiled as a module, the probe function was called, but was failing
>>> later.
>>> 
>>> The single message I would see was "ISP revision x.y found" [1]
>>> 
>>> When compiled in the kernel image, everything was fine.
>>> 
>>> 
>>> [1]
>>> http://lxr.linux.no/linux+v2.6.39.4/drivers/media/video/omap3isp/isp.c#L2
>>> 103
>> I think with kernel version 3.0 i had the same problem, i had to
>> modprobe iommu2 before omap3isp, removing (if already loaded) iommu.
>> Probably later on it was fixed and you don't need that anymore.
> 
> That's right. The OMAP3 ISP driver indirectly depended on the iommu2 module, 
> which wasn't loaded automatically. Nowadays OMAP IOMMU support is a boolean 
> option, so it will get compiled in the kernel directly.
> 
> -- 
> Regards,
> 
> Laurent Pinchart
> 
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