Hello, I am working with a DM6467 running MontaVista 5 and DVSDK 2.0.0.22. I am trying to modify the driver of channel 2 support for SD display. So far, I have modified the driver so that the driver is successfully configured to 720x576. However, when I try to run our program(about to call V4L2 driver), it hangs at the VIDIOC_DQBUF ioctl. It is in the videobuf_waiton function; it gets as far as calling schedule(). I am out of ideas how to debug it, please, give me some idea!
I look forward to your reply. Thanks。
Tom.