broken data when adv7481 take DV 1080P as input


when adv7481 bringup in our board, then we used SONY DV HDR-CX405 as input.

if the DV is set 720P, then the data after adv7481 is okay. but if the DV is set to 1080P, then the data after adv7481 is broken as attached, and it could keep long time with such kind broken data.

so that is the same DV, but differnet set leads to differnt result. I checked the datasheet, it seems to support 1080P with HDMI interface. and the kernel log shows adv7481 can detect the right size from HDMI.

adv7481_get_hdmi_timings(2035), adv7481 TMDS Resolution: 1920 x 1080 @ 60 fps

could you help to check and share some clue? Thanks so much.

1080P screenshot

Parents Reply
  • 0
    •  Analog Employees 
    on Jan 21, 2019 10:22 AM over 2 years ago in reply to SainC


     Have you tried with some other source ?

     For different input format ,have you configure the VID_STD register?

    Note: And also as per resolution and formats support on CSI-TXA in 2 lane output Mode,
    it will support only 1080i@60HZ , but 1080p@60Hz will not allowed by MIPI protocol.

    So 1080p will support vertical freq(frame rate) till @30Hz. Please refer Page208 in ADV748x Hardware manual.