On Thu, Oct 20, 2011 at 12:03 PM, Stefan Herbrechtsmeier <sherbrec@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > Am 20.10.2011 08:56, schrieb Boris Todorov: >> On Wed, Oct 19, 2011 at 7:26 PM, Stefan Herbrechtsmeier >> <sherbrec@xxxxxxxxxxxxxxxxxxxxxxx> wrote: >>> Am 18.10.2011 15:33, schrieb Boris Todorov: >>>> Hi >>>> >>>> I'm trying to run OMAP + TVP5151 in BT656 mode. >>>> >>>> I'm using omap3isp-omap3isp-yuv (git.linuxtv.org/pinchartl/media.git). >>>> Plus the following patches: >>>> >>>> TVP5151: >>>> https://github.com/ebutera/meta-igep/tree/testing-v2/recipes-kernel/linux/linux-3.0+3.1rc/tvp5150 >>>> >>>> The latest RFC patches for BT656 support: >>>> >>>> Enrico Butera (2): >>>> omap3isp: ispvideo: export isp_video_mbus_to_pix >>>> omap3isp: ispccdc: configure CCDC registers and add BT656 support >>>> >>>> Javier Martinez Canillas (1): >>>> omap3isp: ccdc: Add interlaced field mode to platform data >>>> >>>> >>>> I'm able to configure with media-ctl: >>>> >>>> media-ctl -v -r -l '"tvp5150 3-005c":0->"OMAP3 ISP CCDC":0[1], "OMAP3 >>>> ISP CCDC":1->"OMAP3 ISP CCDC output":0[1]' >>>> media-ctl -v --set-format '"tvp5150 3-005c":0 [UYVY2X8 720x525]' >>>> media-ctl -v --set-format '"OMAP3 ISP CCDC":0 [UYVY2X8 720x525]' >>>> media-ctl -v --set-format '"OMAP3 ISP CCDC":1 [UYVY2X8 720x525]' >>>> >>>> But >>>> ./yavta -f UYVY -s 720x525 -n 4 --capture=4 -F /dev/video4 >>>> >>>> sleeps after >>>> ... >>>> Buffer 1 mapped at address 0x4021d000. >>>> length: 756000 offset: 1515520 >>>> Buffer 2 mapped at address 0x402d6000. >>>> length: 756000 offset: 2273280 >>>> Buffer 3 mapped at address 0x4038f000. >>>> >>>> Anyone with the same issue??? This happens with every other v4l test app I used. >>> I had the same issue. >>> >>> Make sure that you disable the xclk when you remove your sensor driver. >>> >>> isp->platform_cb.set_xclk(isp, 0, ISP_XCLK_A) >> How exactly did you solved your problem? I don't see how XCLK in >> _remove will help. Pls explain. > Sorry, I mean deactive / power off your sensor. >> Btw I'm feeding TVP with external clock (not from xtal pins) - >> omap.cam_xclk -> tvp.clk_in > I mean the cam_xclk. >> And I'm using kind of hack to get it: >> isp_probe() >> + isp_set_xclk(isp, 27000000, 1); > This is your problem. > > You should control the clock via board / platform callback from your driver. > Example: > http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg56627.html > > It is important that you set the clock to zero when your driver is not > in use. > > The problem is connected to the use count of the ISP and some > initialisation which only happen when the counter change between zero > and one. > tvp_probe() needs clock for i2c detected/config. tvp5150_s_power call happens when video starts streaming and if tvp is not configured -> kernel panic. And what about the case when TVP is used with OSC on XTAL pins and CLK_IN is not used at all? Maybe I don't fully understand what is happening... or isp_set_xclk() use is messing up with ISP -- 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
