Linux/AM3352: LCD flickers when kernel boots

Rohit Khatri

Part Number: AM3352
Other Parts Discussed in Thread: DA8XX

Tool/software: Linux

We have ported linux 4.4.12 based sdk and facing issue of lcd flicker when kernel starts and it settles within 1 second.

This issue is still same with DA8XX based fbdev driver as well as drm based tilcdc driver.

My same post is at e2e.ti.com/.../2195130

Please refer attached (VID_20170522_101619.rar) on above e2e link.

BR,

Rohit Khatri

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

The software team have been notified. They will respond here.

0 Rohit Khatri over 8 years ago in reply to Biser Gatchev-XID

Intellectual 990 points

Hi Biser,

We are still waiting for solution.

BR,

Rohit Khatri

0 Dwarakesh Radhakrishnan over 8 years ago in reply to Rohit Khatri

Guru 13660 points

Hi Rohit,

Have you tried completely disabling kernel LCD driver (as an experiment)and check what is happening ? Does the flicker exist ?

0 Rohit Khatri over 8 years ago in reply to Dwarakesh Radhakrishnan

Intellectual 990 points

Yes, we have tried it but at that time we can't able to observe anything because it disables frame buffer and we can see only white screen or some time garbage on display.

Best Regards,

Rohit Khatri

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Linux/AM3352: LCD flickers when kernel boots