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[AM335x] Clocks related to LCD display are stopped after it works 5 min

Guru 24520 points

Hi community member,

Would you please advice for the following phenomenon?

[Phenomenon]
Clocks related to LCD display are stopped after it works working 5 min
My customer would like to keep outputting the clocks related to LCD module.
However, the clocks were stopped after it worked the am335x with SGX and Qt.
What is cause of stopping the LCD clocks?

Regarding to customer ,the regsiter of RASTER_CTRL_Register(28h) was cleared Bit0(lcden) at the clocks were stopped even though they did not control it.
Have you ever met this phenomenon? Does this phenomenon have a potential by power save mode of linux?

Note: The LCD display did not resume form this status even though they moved the mouse or pushed key,. And if set the lcden bit but, the display will show again.

If you need more information in order to solve this, please let me know.
Best regards.
Kaka