Re: Lockup on second streamon with omap3-isp

[Michael Jones <michael.jones@matrix-vision.de>]

Hi Laurent,

On 03/09/2012 11:42 AM, Laurent Pinchart wrote:
> Hi Jean-Philippe,
>
[snip]
>  From my experience, the ISP doesn't handle free-running sensors very well.
> There are other things it doesn't handle well, such as sensors stopping in the
> middle of the frame. I would consider this as limitations.

Considering choking on sensors which stop in the middle of the frame- is 
this just a limitation of the driver, or is it really a limitation of 
the ISP hardware itself?  It is at least a limitation of the driver 
because we rely on the VD1 and VD0 interrupts, so we'll of course have 
problems if we never get to the last line.  But isn't it conceivable to 
use HS_VS to do our end-of-frame stuff instead of VD0?  Maybe then the 
ISP would be OK with frames that ended early, as long as they had 
reached VD1.  Then of course, you could move VD1 to an even earlier 
line, even to the first line.

Do you think that's possible?

-Michael

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