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How to fix IPU warning

Question asked by Sam Kappen on Apr 9, 2015
Latest reply on Mar 28, 2016 by felix wei

We are using a custom driver for capturing video (1280x722 YUV 422 @ 30fps) from two digital imagers on iMX6Q based custom board in freescale linux 3.10.17 kernel. One imager is connected to CSI0 port of first IPU and other connected to CSI1 port of second IPU. We are able to capture and verify the captured images. We are seeing the below ipu error interrupts  when multiple interrupts occur simultaneously in the system. For eg if we insert a usb disk to the system we are seeing  one or two IPU warnings for each insertion. I suspect this could be due to interrupt latency if so is there is any way to increase ipu interrupt priority? or any other method to avoid this frame lost situation?

 

IPU Warning - IPU_INT_STAT_10 = 0x00000002

IPU Warning - IPU_INT_STAT_10 = 0x00000001

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