Thank you for your explanation. Unfortunately, I was not able to follow it completely... How exactly did you "compile, generate and load" the new .ko file? I downloaded the original sun4i-i2s.c.c file and made your recommended change. Then I want to build it using a Makefile, but I get the exception: /lib/modules/4.14.111/build No such file or directory. Am I missing some kernels? I am using the NanoPi Neo2 with kernel version 4.14.111.
Furthermore, if I try to build the dtb file based on your third step, I get: "Error: sph0645-overlay.dts:2.2-8 syntax error". This would indicate t