IMX6UL redundant interrupts

[ilya_kondrashki]

I develop driver for Linux which need to count level changes on the line.

I register my ISR at falling trigger, but I see hadler called on rising level.

I attached some debug info as screenshots and minimal code I can reproduce the problem with.

Why is ISR called redundantly? Would appreciate any thoughts on this.
Thanks.

[igorpadykov]

Hi Ilya

what bsp used in the case, one can try with nxp linux from

linux-imx - i.MX Linux kernel 

and try to debug it using sect.2.1.2 Interrupts (Operation) attached Linux Manual

AN4553 Using Open Source Debugging Tools for Linux on i.MX Processors
https://www.nxp.com/docs/en/application-note/AN4553.pdf

Best regards
igor
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