RE: FW: OMAP 3 ISP

RE: FW: OMAP 3 ISP

[Alex Gershgorin]

Hi Ritesh,

Please send in the future CC to laurent.pinchart@ideasonboard.com and linux-media@vger.kernel.org

> 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

Re: FW: OMAP 3 ISP

[jean-philippe francois]

2012/5/29 Alex Gershgorin <alexg@meprolight.com>:
>
> Hi Ritesh,
>
> Please send in the future CC to laurent.pinchart@ideasonboard.com and linux-media@vger.kernel.org
>
>> 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#L2103

Jean-Philippe François

>
>
>
>
>
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Re: FW: OMAP 3 ISP

[Laurent Pinchart]

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@meprolight.com>:
> >> Hi Ritesh,
> >> 
> >> Please send in the future CC to laurent.pinchart@ideasonboard.com and
> >> linux-media@vger.kernel.org>> 
> >>> 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

Re: OMAP 3 ISP

[Ritesh]

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@ideasonboard.com> 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@meprolight.com>:
>>>> Hi Ritesh,
>>>> 
>>>> Please send in the future CC to laurent.pinchart@ideasonboard.com and
>>>> linux-media@vger.kernel.org>> 
>>>>> 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
> 

Re: OMAP 3 ISP

[Laurent Pinchart]

Hi Ritesh,

On Thursday 31 May 2012 03:26:57 Ritesh wrote:
> 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

I can't, as I don't have that. You should take the latest mainline code and 
add ISP board code for your board. You can find examples of such board code at 
http://git.linuxtv.org/pinchartl/media.git/shortlog/refs/heads/omap3isp-
sensors-board for the Beagleboard, the Gumstix Overo and the OMAP3 EVM.

-- 
Regards,

Laurent Pinchart