mx53: WMV playback will hang the system when run in 1GHz

[PatrickChau]

Dear All:

     We have a project that is using mx53 for playing video, we are using our own hardware, which design bases on mx53qsb. We found that when the system is running in 1GHz and play the WMV file, it will hang the system. When we change the system to run at 800Hz, the video play back becomes fine, but lots of vpu blocking timeout from the kernel.

     From the information of local FAE, they said some of their client also facing this problem, does anybody is facing the issue as well?

     Thx for your help in advance.

Patrick

[weidong_sun]

Hello,Parick,

     Would you like to share your schematic with me ? Let us analyse it together , OK ?

Regards,

Weidong

[PatrickChau]

Hi Weidong:

        Which part of the schematic that you want to, RAM?

Patrick

[weidong_sun]

Hello,Patick,

       I want to see the loads of VCC_BP and it's MAX current. So if you are not convinient, you can send complete schematic to my Email : weidong.sun@freescale.com

       Oh,Sorry, VCC_BP here is 3.8V to PMIC.

Regards,

Weidong

[weidong_sun]

Hello,Patick,

      Let's do a test :

(1)Preparing a Li battery with 3.7V & 3000mA .

(2)Soldering a male power Jack to C260

Attention to Positive and Negative.

(3)Soldering a female plug to Li battery.

(4)Insert 5V adapter and Connect Li bettery to male power Jack
The purpose we do like abvoe is to increase VCC_BP capacity.

After system boots succesfully, please try to play xxx.wmv file. and check if system will hang.

Regards,

Weidong

[PatrickChau]

Hi Weidong:

            Followed you instructions to do the rework, the system still hang.

Thx & B. Regards

Patrick

[PatrickChau]

Hi Weidong:

          I have run the memory test by using the tools from freescale on both mx53qsb and our cpu modules, the DDR density per chip select set to 128MB, and number of chip select set to 2, and enable the incrementing DDR frequency, clock start from 400MHz, the mx53qsb fails at clock 460MHz.

               # ./DDR_Stress_Tester.exe -t mx53 -com 2 -df MX53_TO2_DDR3_LCB_SMD_ARDb.inc

               DDR clock: 460

               t0: memcpy11 SSN test

               t1: memcpy8 SSN test

               Address of test2 failure: 0x7223e000

               Data was:                 0xffff

               But pattern was:          0x0

     results of our 2 CPU moudels:

               DDR clock: 470
               t0: memcpy11 SSN test
               t1: memcpy8 SSN test
               Address of test2 failure: 0xb4224000
               Data was: 0xffff0000
               But pattern was: 0x0

               DDR clock: 445
               t0: memcpy11 SSN test
               t1: memcpy8 SSN test
               Address of test2 failure: 0x7657a000
               Data was: 0xffff
               But pattern was: 0x0

          do you think it maybe the problem of ram?

Patrick

[weidong_sun]

Hello,Patrick,

      your testing indicates that the DDR3 clock can normally work at 400MHz. But It can't exceed 460MHz. you can see DDR clock during u-boot booting. How many is it ?

Regards,

Weidong

[PatrickChau]

Hi Weidong:

        It is running at 400MHz

         uboot:

          emi_slow clock: 133333333Hz

          ddr clock     : 400000000Hz

          esdhc1 clock  : 80000000Hz

          esdhc2 clock  : 80000000Hz

          Linux:

          # cat /proc/cpu/clocks  | grep ddr

          ddr_clk-0                             P_____    1   400000000 (400MHz)

         I check with the memtester since this morning,  it just finished running 1 loop, so far it is fine, and will let it runs during the weekend. If it is not the RAM problem, what would be the cause.

Patrick

[weidong_sun]

Hello,Patrick,

    Can you send the player you are using to me ? let me try to play a .wmv file !

    My Email: weidong.sun@freescale.com

Regards,

Weidong

[PatrickChau]

Hi Weidong:

     we are just using the gplay to play the file, with ltib 1109 release.

Patrick

[weidong_sun]

Hello,Patrick,

       your system is ubuntu , right ?

Regards,

Weidong

[PatrickChau]

Hi Weidong:

         Yes, the ubuntu system on the SD card is from the mx53qsb EVK board. Below is what I have from the console.

          lucid@lucid-desktop:~$ gplay nobility.wmv

          playbin2 is employed!

          fsl_player_init(): Successfully initialize!

          fsl_player_set_media_location(): filename=nobility.wmv

          [Stopped  ][Vol=01][00:00:00/00:00:00][fps:0][INFO]     Product Info: i.MX53

          VPU Version: firmware 13.4.41; libvpu: 5.3.2

          MFW_GST_VPU_DECODER_PLUGIN 2.0.3-1-179-e630aa8d build on Sep 28 2011 15:01:51.

          FOUND GST_MESSAGE_TAG!

          container format: ASF

          FOUND GST_MESSAGE_TAG!

              audio codec: WMA Version 8

                  bitrate: 193847

            language code: en

          FOUND GST_MESSAGE_TAG!

              video codec: Microsoft Windows Media 9

                  bitrate: 808955

            language code: en

          MFW_GST_V4LSINK_PLUGIN 2.0.3-1-179-e630aa8d build on Sep 28 2011 15:04:02.

          >>V4L_SINK: Actually buffer status:

                  hardware buffer : 11

                  software buffer : 0

          get GST_MESSAGE_ELEMENT prepare-xwindow-id;

     The system hangs up to the the above line.

     I run the memory test for 3 days, all tests are passed without any error.

Patrick

[lily_zhang]

Hello, Patrick:

If you enable DVFS, please try to disable DVFS and see whether the issue is still here.

[PatrickChau]

Hi XiaoLi:

      Thx for your reply.

      Unluckily, it doesn't help, system still hangs,  but if I enable DVFS and set the speed to 800MHz, It works fine:

          #  echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

Patrick