use johannes4linux approach

driver/Makefile

@@ -1,11 +1,30 @@
-obj-m += counter.o
+NAME = counter
+obj-m += $(NAME).o
 
-KDIR := /lib/modules/$(shell uname -r)/build
-PWD  := $(shell pwd)
+all: $(NAME).ko $(NAME).dtbo
+	echo Builded Device Tree Overlay and kernel module
 
-all:
-	$(MAKE) -C $(KDIR) M=$(PWD) modules
+$(NAME).ko:
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
+
+$(NAME).dtbo: $(NAME).dts
+	dtc -@ -I dts -O dtb -o $@ $<
 
 clean:
-	$(MAKE) -C $(KDIR) M=$(PWD) clean
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
+	rm -rf $(NAME).dtbo
+	
+load:
+	sudo dtoverlay -d . $(NAME).dtbo
+	@echo "Overlay loaded"
+	sudo insmod ./$(NAME).ko
+	@echo "LKM loaded"
 
+unload:
+	sudo rmmod ./$(NAME).ko
+	@echo "LKM unloaded"
+	sudo dtoverlay -R $(NAME)
+	@echo "Overlay unloaded"
+
+list: 
+	sudo dtoverlay -l