On Tue, Jan 18, 2011 at 3:37 PM, Claudiu Covaci <claudiu.covaci@xxxxxxxxx> wrote: > Hi, > > I'm have trouble receiving a video stream on the Freescale i.MX51 > processor. I've tried everything I could think, so I'm trying my luck > here. > > I'm using a 2.6.31 kernel with some modifications: the camera capture > driver [1] and the IPU (Image Processing Unit) driver [2] from the > Freescale BSP 2010.11. > > I'm at a point where I can open the /dev/video0 device and can (at > least try to) read frames, but it fails at dequeueing the video > buffers (VIDIOC_DQBUF) with the message: > <3>ERROR: v4l2 capture: mxc_v4l_dqueue timeout enc_counter 0 > Unable to dequeue buffer (62). > > - I've double-checked the IPU registers and they seem properly > configured, but I don't get any interrupt (at end-of-frame). > - The relevant IOMUX pins are also configured. > - the video signal appears at the i.MX pins (so it gets there) > - I've also tried activating the internal picture generator, but still > nothing happens. > > Is there anything I overlooked? Is there a way to find out where the > problem is? Any hints will be greatly appreciated. > > Thanks! > Claudiu > > [1] http://opensource.freescale.com/git?p=imx/linux-2.6-imx.git;a=blob;f=drivers/media/video/mxc/capture/mxc_v4l2_capture.c;h=8133d202304eea22e94bbd8eaaa215002b2dc675;hb=0fae922f451a5bde63595a2e0c2cd7079f083440 > > [2] http://opensource.freescale.com/git?p=imx/linux-2.6-imx.git;a=tree;f=drivers/mxc/ipu3;h=288c21f88aa650d16d843dccec2b04ba9f1462f7;hb=0fae922f451a5bde63595a2e0c2cd7079f083440 > -- > 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 > Hi Hans, Jean, Mauro: No ideea to help Claudiu ? -- 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
