CMOS camera interface on ARM
g.liakhovetski at gmx.de
Thu Jul 14 14:30:45 EDT 2011
On Thu, 14 Jul 2011, GIGIN JOSE wrote:
> I am working on ARM9 based linux embedded system. I need to
> interface a CMOS camera on the SoC. The processor I use is
> samsung s3c2416, which does not have a camera interface.
> The linux version I use is 2.6.21
You need to use the latest kernel.
> With the standard resolutions(640*480) and fps
> (~25 fps) configured on the camera, I am getting the
> clock rates as below:
> Master clock: 24 MHz
> Pixel Clock : 8MHz
> HSYNC : 20KHz
> VSYNC : 25Hz
> The Bit Resolution I use is 8bpp.
> Using the regular interrupt lines (external interrupts),
> will I be able to read the 8 bit camera data coming
> with each pixel ? Can I do this with regular IRQ interrupt
> or should I configure my interrupts to be FIQ ?
> Is there any generic driver available for this
> kind of interface in linux.
See drivers/media/video/s5p-fimc/ for an example, as well as other drivers
> What is the interrupt
> latency if I configure the external interrupts in FIQ mode
> and IRQ mode ?
> Thank You
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
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