kernel 4.4.12 i2c eeprom AT24c02驱动移植

在kernel  make menuconfig ARCH=ARM 中打开：Device Drivers  --->    Misc devices  --->        EEPROM support  --->        <*> I2C EEPROMs / RAMs / ROMs from most vendors 开启上面的选项。如果不能勾取的话 /at24查看相关的依赖。第二步，在设备树内添加：CHEN_DTS/am335x-chenful.dts在i2c0 节点上添加eeprom相关节点的信息。414 &i2c0 {                                                                         415     pinctrl-names = "default";                                                  416     pinctrl-0 = <&i2c0_pins>;                                                   417                                                                                 418     status = "okay";                                                            419     clock-frequency = <400000>;                                                 420                                                                                 421     tps: tps@2d {                                                               422         reg = <0x2d>;                                                           423     };                                                                          424                                                                                 425     /*  Add by chenfl 2016/12/19 , Add at24 eeprom */                           426     eeprom@50 {                                                                 427         compatible = "at24,24c02";                                              428         reg = <0x50>;                                                           429     };                                                                          430                                                                                 431 }; 编译。进入文件系统系统后，查看cd /sys/devices/platform/ocp/44e0b000.i2c/i2c-0/0-0050/ cat  eepromecho 11111 >  eepromcat eeprom 查看是否写入成功。