linuxe kernel 学习笔记
http://www.cnblogs.com/wang_yb/p/3504539.html
蜗牛科技
linux kernel
http://www.wowotech.net/sort/linux_kenrel
linuxe kernel 统一设备树
http://www.wowotech.net/sort/device_model
IOCTL:
linxue 高端内存
http://wdqfirst.blog.163.com/blog/static/113347411201182222252954/
viural bus:
https://lwn.net/Articles/326540/
I2C:
http://blog.youkuaiyun.com/hanmengaidudu/article/list/5