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:0x00000000 > da:0x00000000 pgd:0xdedb0000 *pgd:0x9e00fc01 pte:0xde00fc00 > *pte:0x00000000 [snip] > And the image files I get are filled with 5555 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 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
