每一个设备都有相对应的初始化程序，dts的写法可以参照Documentations/devicetree/下面的文档
http://bbs.chinaunix.net/thread-4139331-1-1.html
1.
http://events.linuxfoundation.org/sites/events/files/slides/petazzoni-device-tree-dummies.pdf
https://wiki.freebsd.org/FlattenedDeviceTree
https://www.raspberrypi.org/documentation/configuration/device-tree.md
http://www.wiki.xilinx.com/Build+Device+Tree+Blob
http://xillybus.com/tutorials/device-tree-zynq-1 --!! good
http://haifux.org/lectures/288/haifux-devicetree.pdf
http://elinux.org/Device-tree_documentation_project
http://elinux.org/images/4/48/Experiences_With_Device_Tree_Support_Development_For_ARM-Based_SOC%27s.pdf
http://stackoverflow.com/questions/17488320/how-to-program-device-tree-file-dts
http://devicetree.org/Device_Tree_Usage --！！不错
http://cache.freescale.com/files/soft_dev_tools/doc/user_guide/QCSHWDTUG.pdf
http://www.socallinuxexpo.org/sites/default/files/presentations/Contemporary%20Device%20Tree.pdf
https://learn.adafruit.com/downloads/pdf/introduction-to-the-beaglebone-black-device-tree.pdf
http://landley.net/kdocs/ols/2008/ols2008v2-pages-27-38.pdf
http://www.mvista.com/download/vision08/Device-tree-and-embedded-Linux-Vision2008.pdf
http://www.intellimetrix.us/download/DeviceTreesPaper.pdf
http://www.embeddedcomputingconference.ch/pdf_2014/4A1_Buechi.pdf
http://elinux.org/images/d/d8/Vwool-device_trees_arm.pdf