I adding custom pins declarations through overlay file as in first image with corresponding yaml file ( see attachment) with path .. /dts/bindings/gpio/custom.yaml. The project creation and build is successful, but at run time, it is observed that the pointer to custom pin is NULL and it;s addres also is NULL as shown in scond image. The code to initialize the custom pins is in attached file. This problem is with one pin only ... all previous pins are properly assgned the pointer and address.
