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imx28 LCDIF DMA not running

Question asked by sylvainblaix on Mar 31, 2016
Latest reply on Mar 31, 2016 by igorpadykov

I am running an iMX28 Linux (Freescale 2013). After blanking the screen (echo 1 > /sys/class/graphics/fb0/blank) and subsequently un-blanking (echo 0 > /sys/class/graphics/fb0/blank), I can no longer see any graphics applications.

When the failure happens, it appears that the LCDIF DMA controller is no longer executing in spite of the fact that it seems to be configured properly.

 

Can anyone tell me why the DMA controller is not running?

 

 

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