Device Tree Overlay script

dto

#!/bin/sh

OVERLAY=/sys/kernel/config/device-tree/overlays

if [ -z $1 ]; then
  echo USAGE: sudo dto folder-name [file-name.dts]
  exit 1
fi

if [ -e $OVERLAY/$1 ]; then
  rmdir $OVERLAY/$1
  if [ "$?" != "0" ]; then
    echo "Unable to remove previous overlay folder."
    exit 1
  fi
fi

if [ -z $2 ]; then
  exit 0
fi

mkdir -p $OVERLAY/$1
if [ "$?" != "0" ]; then
  echo "Unable to create overlay folder."
  exit 1
fi

dtc -O dtb $2 > $OVERLAY/$1/dtbo