Comment 0 for bug 1929890

Description
GPIO controller on CNL PCH has a new feature which allows for timed trigger of GPIO events.
We should consider at least following aspects and if needed we can create subtasks:
Translation of ART->System Time on input
Any output GPIO
Cross-timestamp and/or edge counting of input GPIOs supporting high frequency input
Similar feature to input, counting output edges
Time Aware GPIO Frequency Discipline - GPIO Frequency Adjustment
Time Aware GPIO Output - Fire on Trigger
Time Aware GPIO Input - Stamp on Edge Detection

Hardware: Tiger Lake & Elkhart Lake

Target Release: 21.04
Target Kernel: TBD

External links:
https://github.com/intel/linux-intel-quilt/tree/mainline-tracking-v5.11-yocto-210223T083754Z