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Original question:

RTOS: VSDK - Issue with playing HD (1920*1080) videos in 1920* 720 display resolution

RTOS: VSDK IPU1- Display Blank using Write back- pipeline

Gokul Kujulva
Genius 4465 points


Tool/software: TI-RTOS

Hello all,

We are using  DRA7xx Processor & VSDK3.04 version . We had initially display flickers issue as mentioned below

https://e2e.ti.com/support/processors/f/791/t/751584

  

For the above problem, We have received changes from Subhajit for handling this flickers issue.This solved flickers issue with two screens use -case(which uses GFX, VID1 pipeline). But while trying to use, write-back pipeline, display gets blank. 

We get continuous below logs.

74.863783 s: dispcore/src/vpscore_dctrl.c @ Line 1094:

[HOST] [IPU1-0]     74.863874 s: new wbIncompleteError, count = 15113

[HOST] [IPU1-0]     74.863996 s: dispcore/src/vpscore_dctrl.c @ Line 1090:

[HOST] [IPU1-0]     74.864057 s: new wbBufferOverflow, count = 30231

[HOST] [IPU1-0]     74.864149 s: dispcore/src/vpscore_dctrl.c @ Line 1094:

[HOST] [IPU1-0]     74.864240 s: new wbIncompleteError, count = 15114

[HOST] [IPU1-0]     74.864332 s: dispcore/src/vpscore_dctrl.c @ Line 1090:

[HOST] [IPU1-0]     74.864423 s: new wbBufferOverflow, count = 30232

[HOST] [IPU1-0]     74.864515 s: dispcore/src/vpscore_dctrl.c @ Line 1094:

[HOST] [IPU1-0]     74.864576 s: new wbIncompleteError, count = 15115

[HOST] [IPU1-0]     74.864728 s: dispcore/src/vpscore_dctrl.c @ Line 1090:

[HOST] [IPU1-0]     74.864820 s: new wbBufferOverflow, count = 30233

[HOST] [IPU1-0]     74.86491®1 s: dispcore/src/vpscore_dctrl.c @ Line 1094:

[HOST] [IPU1-0]     74.865003 s: new wbIncompleteError, count = 15116

[HOST] [IPU1-0]     74

Regards,

Gokul

  • 0
    TI__Guru**** 481835 points
    Hi Gokul,

    I am not sure what is the error at line 1090 and 1094. could you please share this file from your codebase?

    Rgds,
    Brijesh
  • 0 in reply to Brijesh Jadav
    Genius 4465 points

    Hi Brijesh,

    vpscore_dctrl.cPlease find the file in the attachment. Debug messages added by Subhajit.

    Regards,

    Gokul

  • 0 in reply to Gokul Kujulva
    TI__Expert 7015 points

    Debug session with Gokul

    The findings from the debug session today:

    ·        When configured for 1920x720@30 FPS, Harman’s full use case used to run (without flickers) before TI fix was provided

    ·        With TI  fix applied, 1920x720@30 FPS stops working when writeback sub-usecase is enabled. Harman observes a system hang. No error messages. Display does not come up.

    ·        With TI fix applied, 1920x720@60 FPS, Harman does not see a crash, but Harman display does not come up, and Harman sees error messages.

    We plan to have another session with Gokul to further analyze the issue.