Re: OMAP3ISP boot problem

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Alex,

On Saturday 10 December 2011 14:36:17 Alex Gershgorin wrote:
> > Hi Sakari,
> > 
> > Thank you for your quick response and sorry for stupid question.
> > Yes CONFIG_OMAP_IOMMU and CONFIG_OMAP_IOVMM enabled,
> > because OMAP 3 camera controller depends on the CONFIG_OMAP_IOVMM  and
> > CONFIG_OMAP_IOMMU. Please tell me how I can use dmabuf instead of the
> > IOMMU/IOVMM API.
> >
> >Unfortunately that real fix isn't available yet and won't be for some
> >time. Still, it should be fully functional currently.
> >
> >Looking at the backtrace again, it seems to crash in
> >driver_find_device(). That looks fishy.
> >
> >Do you have the ISP driver compiled into the kernel? I might try it as a
> >module, albeit it of course should work when it's linked to the kernel
> >as well.
> 
> Yes ISP driver compiled into kernel, but if I back to previos version of
> the Linux kernel  3.0.0, that works well. Here part of kernel boot
> message...
> 
> > [    2.063354] Linux media interface: v0.10
> > [    2.068298] Linux video capture interface: v2.00
> > [    2.075561] omap3isp omap3isp: Revision 2.0 found
> > [    2.080932] omap-iommu omap-iommu.0: isp: version 1.1
> > [    2.099365] Camera Video probed
> > [    2.115997] vivi-000: V4L2 device registered as video7
> 
> Now I plan to start  using a newer version of the Linux kernel 3.2.0-rc4,
> but unfortunately faced with the problem. That suggest?

I'm quite surprised. I've just tested 3.2-rc2 here, and got no oops when 
loading the omap3-isp driver. I've tried compiling the driver in the kernel 
and as a module, and both succeeded. I've pushed my code to 
http://git.linuxtv.org/pinchartl/media.git/shortlog/refs/heads/omap3isp-
sensors-board if you want to give it a try.

-- 
Regards,

Laurent Pinchart