fl2440内核移植（二）——RTC移植

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系统环境：Centos 6.5

板子芯片：s3c2440

内核版本：linux 3.0

编译器：arm-linux-gcc 4.5.4

作者：Lu Zengmeng <1540999272@qq.com>

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1、修改arch/arm/mach-s3c2440/mach-smdk2440.c

static struct platform_device *smdk2440_devices[] __initdata = {
&s3c_device_ohci,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
&s3c_device_rtc, //添加RTC设备
};

2、配置menuconfig，选上RTC相关的驱动

Device Drivers----->

Real Time Clock----->

--- Real Time Clock
│ │ [*] Set system time from RTC on startup and resume
│ │ (rtc0) RTC used to set the system time
│ │ [ ] RTC debug support
│ │ *** RTC interfaces ***
│ │ [*] /sys/class/rtc/rtcN (sysfs)
│ │ [*] /proc/driver/rtc (procfs for rtc0)
│ │ [*] /dev/rtcN (character devices)
│ │ [*] RTC UIE emulation on dev interface

重新编译内核，烧录后测试

>: date -s "2015-11-25 13:29:30" //设置系统时间
Wed Nov 25 13:29:30 MST 2015
>: hwclock -w //保存到rtc
>: hwclock -r //du'qu
Wed Nov 25 13:29:39 2015 0.000000 seconds
>: hwclock -r
Wed Nov 25 13:29:45 2015 0.000000 seconds

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