diff --git a/src/02-driver/character-oriented/boot.cmd b/src/02-driver/character-oriented/boot.cmd
deleted file mode 100644
index 1780fdb..0000000
--- a/src/02-driver/character-oriented/boot.cmd
+++ /dev/null
@@ -1,10 +0,0 @@
-setenv bootargs console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootwait
-
-fatload mmc 0 $kernel_addr_r Image
-#fatload mmc 0 $fdt_addr_r nanopi-neo-plus2.dtb
-fatload mmc 0 $fdt_addr_r mydt.dtb
-
-fdt addr $fdt_addr_r
-fdt resize
-
-booti $kernel_addr_r - $fdt_addr_r
diff --git a/src/02-driver/character-oriented/mydt.dts b/src/02-driver/character-oriented/mydt.dts
deleted file mode 100644
index 66f5564..0000000
--- a/src/02-driver/character-oriented/mydt.dts
+++ /dev/null
@@ -1,12 +0,0 @@
-/dts-v1/;
-
-#include "allwinner/sun50i-h5-nanopi-neo-plus2.dts"
-
-/ {
-        /delete-node/ leds;
-
-        mydevice {
-                compatible = "mydevice";
-                attribute = "text";
-        };
-};