/* System calibration rtc enable. 
Use this function to able system calibration rtc.  */
void system_rtc_calibration_enable(void)
/* System calibration rtc enable. 
Use this function to able system calibration rtc.  */
void system_rtc_calibration_enable(void)
{
	LP_CLK_CAL_REGS0->CONFIG_REG.reg |= \
		LP_CLK_CAL_REGS_CONFIG_REG_START_RTC_CALIB;
}