Hi, On Mon, Apr 25, 2016 at 12:08:00AM +0300, Ivaylo Dimitrov wrote: > Those patch series make cameras on Nokia N900 partially working. > Some more patches are needed, but I've already sent them for > upstreaming so they are not part of the series: > > https://lkml.org/lkml/2016/4/16/14 > https://lkml.org/lkml/2016/4/16/33 > > As omap3isp driver supports only one endpoint on ccp2 interface, > but cameras on N900 require different strobe settings, so far > it is not possible to have both cameras correctly working with > the same board DTS. DTS patch in the series has the correct > settings for the front camera. This is a problem still to be > solved. > > The needed pipeline could be made with: > > media-ctl -r > media-ctl -l '"vs6555 binner 2-0010":1 -> "video-bus-switch":2 [1]' > media-ctl -l '"video-bus-switch":0 -> "OMAP3 ISP CCP2":0 [1]' > media-ctl -l '"OMAP3 ISP CCP2":1 -> "OMAP3 ISP CCDC":0 [1]' > media-ctl -l '"OMAP3 ISP CCDC":2 -> "OMAP3 ISP preview":0 [1]' > media-ctl -l '"OMAP3 ISP preview":1 -> "OMAP3 ISP resizer":0 [1]' > media-ctl -l '"OMAP3 ISP resizer":1 -> "OMAP3 ISP resizer output":0 [1]' > media-ctl -V '"vs6555 pixel array 2-0010":0 [SGRBG10/648x488 (0,0)/648x488 (0,0)/648x488]' > media-ctl -V '"vs6555 binner 2-0010":1 [SGRBG10/648x488 (0,0)/648x488 (0,0)/648x488]' > media-ctl -V '"OMAP3 ISP CCP2":0 [SGRBG10 648x488]' > media-ctl -V '"OMAP3 ISP CCP2":1 [SGRBG10 648x488]' > media-ctl -V '"OMAP3 ISP CCDC":2 [SGRBG10 648x488]' > media-ctl -V '"OMAP3 ISP preview":1 [UYVY 648x488]' > media-ctl -V '"OMAP3 ISP resizer":1 [UYVY 656x488]' > > and tested with: > > mplayer -tv driver=v4l2:width=656:height=488:outfmt=uyvy:device=/dev/video6 -vo xv -vf screenshot tv:// 4.6-rc4 + twl regulator patch + the patches mentioned above + this patchset (I put everything together here [0]) do _not_ work for me. The error matches what I have seen when I was working on it: No image data seems to be received by the ISP. For example there are no related IRQs: root@n900:~# cat /proc/interrupts | grep ISP 40: 0 INTC 24 Edge 480bd400.mmu, OMAP3 ISP I tested with mpv and yavta (yavta --capture=8 --pause --skip 0 --format UYVY --size 656x488 /dev/video6) [0] https://git.kernel.org/cgit/linux/kernel/git/sre/linux-n900.git/log/?h=n900-camera-ivo -- Sebastian
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