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DM8127 DVO2 display in IPNC RDK 3.5 MCFW

piao sun
Prodigy 250 points

Dear All,

I am working with a custom board using DM8127 TI CPU.  I try our board based on IPNC RDK v3.5 with hdvpss_01_00_01_37 and ipnc_psp_arago to display YUV422 by DVO2 .We use oscilloscope to measure the data pin VOUT[0]_G_Y_YC[2-9] , but it seems no data output(the pinmux is checked ok). We alse measure the clk and sync signal, the mode is right with  1080P30. But the display is only black background.  

We have done the same process in IPNC RDK 3.0 MCFW, and got right ouput. Anyone can give me some advice how to get right output with RDK 3.5?

  • 0
    TI__Guru**** 451305 points

    Hi,

     

    Is your display device detecting input mode? if it is the case, video/grpx path is not connected to the DVO2 Venc. If the display device is not detecting the input mode, resolution is not set correctly in the DVO2 venc..

     

    Regards,

    Brijesh Jadav

  • 0 in reply to Brijesh Jadav
    Prodigy 250 points

    Thank you for your reply. 

    The display device can detect input mode .   And I changed gSystem_dctrlTriDisplayConfigDvo2 in the file ipnc_mcfw\mcfw\src_bios6\links_m3vpss\system\system_dctrl.c according to RDK 3.0, then I got right display !!!  Thank you!

  • 0 in reply to piao sun
    Intellectual 505 points

    Hi,piao sun

    Would you tell me how to change gSystem_dctrlTriDisplayConfigDvo2 to output video(BT.1120) from DVO2?

    i'm using ipnc rdk 3.5.

    thanks