Hi Laurent & co.,
I'm looking at the memory limitations in the omap3isp driver. 'struct
isp_video' contains member 'capture_mem', which is set separately for
each of our v4l2 video device nodes. The CCDC, for example, has
capture_mem = 4096 * 4096 * 3 = 48MB, while the previewer and resizer
each have twice that. Where do these numbers come from?
Is the CCDC incapable of DMA'ing more than 48MB into memory? I know
that ISP_VIDEO_MAX_BUFFERS also limits the # of buffers, but I assume
this is basically an arbitrary number so we can have a finite array of
isp_video_buffer's. The 48MB, on the other hand, looks like it might
have a good reason.
thanks,
Michael
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