display flickers during startup

[celiley]

Hello,

I am using iMX6QuadPlus processor with TFT display. The designed board for display meets all electrical and timing requirements on the datasheet. The display flickers at start-up and reset time for 1-2 seconds then works fine. Below is the oscilloscope image including data enable, clock and data signals. The area between cursors belongs time of flickering state. Is there any way to deactive data enable signal?  I guess it's about to modules before Display Interface block of IPU but I couldn’t find what can cause this problem. 

Glad if you help me

Regards,

Celile

[igorpadykov]

Hi Celile

>Is there any way to deactive data enable signal?

one can try to set necessary level in plugin :

plugin.S\mx6sabresd\freescale\board - uboot-imx - i.MX U-Boot 

Also may be recommended to check display power up sequence

defined in its datasheet. One can consider below patches;

https://community.nxp.com/docs/DOC-98109 

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[celiley]

Hi,

Sorry for the late reply. The problem has solved when display pin configurations moved from BSP to DI module in system load. Thank you for your help