Hi Javier,
On Tuesday 26 April 2011 13:18:44 javier Martin wrote:
Hi,
I'm trying to port Guennadi's patches
(http://download.open-technology.de/BeagleBoard_xM-MT9P031/) to last
mainline kernel 2.6.39-rc.
I've managed to compile and configure the video interface using the
suggested commands:
root@beagleboard:~# ./media-ctl -r -l 'mt9p031 2-0048:0-OMAP3 ISP
CCDC:0[1], OMAP3 ISP CCDC:1-OMAP3 ISP CCDC output:0[1]'
Resetting all links to inactive
Setting up link 16:0 - 5:0 [1]
Setting up link 5:1 - 6:0 [1]
root@beagleboard:~# ./media-ctl -f 'mt9p031 2-0048:0[SGRBG8
320x240], OMAP3 ISP CCDC:1[SGRBG8 320x240]'
Setting up forma[ 75.031677] mt9p031_set_format(320x240 : 1)
t SGRBG8 320x240 on pad mt9p031 2-0048/0
Format set: SGRBG8 320x240
Setting up format SGRBG8 320x240 on pad OMAP3 ISP CCDC/0
Format set: SGRBG8 320x240
Setting up format SGRBG8 320x240 on pad OMAP3 ISP CCDC/1
Format set: SGRBG8 320x240
However, when I try to capture some frames using yavta I get the following:
root@beagleboard:~# ./yavta -f SGRBG8 -s 320x240 -n 4 --capture=10
--skip 3 -F `./media-ctl -e OMAP3 ISP CCDC output`
Device /dev/video2 opened: OMAP3 ISP CCDC output (media).
Video[ 81.140228] mt9p031_get_format()
format set: width: 320 height: 240 buffer size: 76800
Video format: GRBG (47425247) 320x240
4 buffers requested.
length: 76800 offset: 0
Buffer 0 mapped at address 0x400c2000.
length: 76800 offset: 77824
Buffer 1 mapped at address 0x40213000.
length: 76800 offset: 155648
Buffer 2 mapped at address 0x40293000.
length: 76800 offset: 233472
Buffer 3 mapped at address 0x40344000.
[ 81.268341] omap-iommu omap-iommu.0: isp: errs:0x
da:0x pgd:0xdedb *pgd:0x9e00fc01 pte:0xde00fc00
*pte:0x
[snip]
And the image files I get are filled with instead of useful data.
Does anybody know whether those iommu errors are harmless?
Do I need to enable CAM mux inside
arch/arm/mach-omap2/board-omap3beagle.c which are currently disabled
using an ifdef?
Please try the patch at
http://thread.gmane.org/gmane.linux.ports.arm.omap/56662
--
Regards,
Laurent Pinchart
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