AU1000_SYS_FREQCTRL1
a->reg = AU1000_SYS_FREQCTRL1;
sleep_sys_clocks[1] = alchemy_rdsys(AU1000_SYS_FREQCTRL1);
alchemy_wrsys(sleep_sys_clocks[1], AU1000_SYS_FREQCTRL1);