my platform is IMX6ULL.
I wrote an i2c device driver program called ds1339.c 3 days earlier,and I could find ds1339 under /dev after insmod ds1339.ko,but I couldn't find ds1339 now,it's very strange.
I tried to program the whole system firmware to my development board which has the same core,and I could find ds1339 under /dev after insmod ds1339.ko.
so,what's the cause of this weird thing??
