Am 27.11.2011 19:32, schrieb Chris Whittenburg:
I'm using the 3.0.8 kernel, with a few changes to add support for
mt9p031 on a beagleboard xm.
I'm configuring with:
media-ctl -v -r -l '"mt9p031 2-0048":0->"OMAP3 ISP CCDC":0[1], "OMAP3
ISP CCDC":1->"OMAP3 ISP CCDC output":0[1]'
media-ctl -v -f '"mt9p031 2-0048":0[SGRBG12 370x243], "OMAP3 ISP
CCDC":0[SGRBG12 370x243], "OMAP3 ISP CCDC":1[SGRBG12 370x243]'
and then running:
yavta -f SGRBG12 -s 368x243 -n 4 --capture=10 --skip 3 -F `media-ctl
-e "OMAP3 ISP CCDC output"`
Which hangs trying to de-queue a buffer:
root@beagleboard:~# yavta -f SGRBG12 -s 368x243 -n 4 --capture=10
--skip 3 -F `media-ctl -e "OMAP3 ISP CCDC output"`
Device /dev/video2 opened.
Device `OMAP3 ISP CCDC output' on `media' is a video capture device.
Video format set: SGRBG12 (32314142) 368x243 buffer size 178848
Video format: SGRBG12 (32314142) 368x243 buffer size 178848
4 buffers requested.
length: 178848 offset: 0
Buffer 0 mapped at address 0x4023d000.
length: 178848 offset: 180224
Buffer 1 mapped at address 0x402b9000.
length: 178848 offset: 360448
Buffer 2 mapped at address 0x4039e000.
length: 178848 offset: 540672
Buffer 3 mapped at address 0x40435000.
Communication is good with the mt9p031, and I can see pclk, and
signals on the data lines, but I don't seem to be getting any
interrupts from the ISP.
Any pointers on what I should check?
Do you have the cam_xclk always enabled?
The isp only works if you set the cam_xclk to zero, when you don't use
the camera.
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