topic Re: dsi display abnormality in i.MX Processors

dsi display abnormality

billshih — Thu, 07 Jan 2016 06:44:37 GMT

hello,

I am using mipi dsi lcd.

but sometimes it randomly has the phenomenon as shown in the file attached.

I am using imx6qdl cpu.

Does anyone know ways to solve this situation?

Or any comment

Thank you.

igorpadykov — Sun, 10 Jan 2016 09:32:33 GMT

Hi Bill

such behaviour may be caused by internal buses limit,

one can try to decrease LCD fps,bpp or use processor

with higher speed grade. Also one can try to disable low power

mode with kernel boot parameter enable_wait_mode=off.

Best regards

igor

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billshih — Mon, 11 Jan 2016 01:35:19 GMT

Hello, igorpady kov

Thank you for your comment

But I don't understand...

Why disabling low power mode can be helpful? Because the device need low power mode to send power-on commends to the lcd.

Do you recommand to use high speed mode to send the power-on commends?

Because I once heard that using low power to send commends is more stable...

What do you think?

Best regards

Bill

mohammedazlum — Mon, 11 Jan 2016 05:09:35 GMT

Hello,

Please share the LCD datasheet and which interface you used for integrating this LCD ?

Regards,

Azlum