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Linux/DRA746: About VIdeo Capture Issue in USB port

yimin bai34
Genius 4755 points

Part Number: DRA746
Other Parts Discussed in Thread: TVP5158

Tool/software: Linux

Hi Sir 

We used latest automotive processor SDK in J6 EVM for development.

And we would like to use mini USB port (USB 2.0) to connect with USB camera. 

We found system was unstable to capture video for a long time.

For example, we used below sample code to capture video. the system will crash in 5 minutes. 

#include <stdio.h>

#include <string.h>

#include <opencv2/imgproc/imgproc.hpp>

#include <opencv2/highgui/highgui.hpp>

#include <opencv2/core/ocl.hpp>

#include <cstdio>

#include <opencv2/opencv.hpp>

 

using namespace cv;

void inituvc(cv::VideoCapture vc, int w, int h) {

  vc.set(CV_CAP_PROP_FRAME_WIDTH, w);

  vc.set(CV_CAP_PROP_FRAME_HEIGHT, h);

}

void show_live_video () {

  VideoCapture capture(1);

  inituvc (capture, 1920, 1080);

  Mat frame;

 

  while(waitKey(20)!=27)

  {

    capture>>frame;

    if ( !frame.empty() ) 

      imshow("ADAS", frame);

    else

      printf ("frame.empty()\n");

  }

}

int main () {

  printf ("OpenCV linking OK.\n");

  show_live_video ();

  return 0;

}

And the log message is showed below

[  516.713750] Alignment trap: not handling instruction ed910b22 at [<b6d54e4c>]

[  516.721573] Unhandled fault: alignment exception (0x221) at 0x000000a2

[  516.728701] pgd = ed5ebec0

[  516.731771] [000000a2] *pgd=ad731003, *pmd=df883003

 

[ 6463.274551] omap_hwmod: mmu1_dsp2: _wait_target_disable failed

[ 6463.288607] omap_hwmod: mmu0_dsp2: _wait_target_disable failed

[ 6463.301801] omap_hwmod: mmu1_dsp1: _wait_target_disable failed

[ 6463.315024] omap_hwmod: mmu0_dsp1: _wait_target_disable failed

[ 6701.894740] Alignment trap: not handling instruction ed8c2b1e at [<b6d60f00>]

[ 6701.902413] Unhandled fault: alignment exception (0xa21) at 0xfffffe77

[ 6701.911692] pgd = df96c080

[ 6701.914744] [fffffe77] *pgd=80000080007003, *pmd=affae003, *pte=00000000

[ 6701.997545] tvp5158 1-0058: Unable to of_probe

[ 6702.009575] omap_hwmod: mmu0_dsp2: _wait_target_disable failed

[ 6702.015466] omap-iommu 41501000.mmu: 41501000.mmu: version 3.0

[ 6702.022145] omap-iommu 41502000.mmu: 41502000.mmu: version 3.0

[ 6702.029825] tvp5158 1-0058: Unable to of_probe

[ 6702.041456] omap_hwmod: mmu0_dsp1: _wait_target_disable failed

[ 6702.047343] omap-iommu 40d01000.mmu: 40d01000.mmu: version 3.0

[ 6702.053945] omap-iommu 40d02000.mmu: 40d02000.mmu: version 3.0

[ 6702.063079] tvp5158 1-0058: Unable to of_probe

[ 6702.068746] tvp5158 1-0058: Unable to of_probe

[ 6712.271331] omap_hwmod: mmu1_dsp2: _wait_target_disable failed

[ 6712.284338] omap_hwmod: mmu0_dsp2: _wait_target_disable failed

[ 6712.297437] omap_hwmod: mmu1_dsp1: _wait_target_disable failed

[ 6712.310433] omap_hwmod: mmu0_dsp1: _wait_target_disable failed

please advise and thanks for your help 

BR

Yimin

  • 0
    Genius 4755 points
    Hi Sir

    Do you have any suggestion? or TI J6 EVM has any limitation ?

    BR
    Yimin
  • 0 in reply to yimin bai34
    TI__Guru 51343 points

    Hi Yimin,

    Can you share the version of the latest automotive processor SDK and the kernel version that you are using?

    Do you know who/which module is printing the below message?

    [  516.713750] Alignment trap: not handling instruction ed910b22 at [<b6d54e4c>]

    [  516.721573] Unhandled fault: alignment exception (0x221) at 0x000000a2

    From the log provided, we are not sure what is causing the system crash., so can you share the complete debug log and the kernel dump when you see the system crash?

  • 0 in reply to Praveen Rao
    TI__Guru 51343 points
    Hi Yimin,
    I haven’t heard back from you, I’m assuming you were able to resolve your issue. If not, just post a reply below (or create a new thread if the thread has locked due to time-out)
    Thanks.