MSC313E_REG_CTRL
reg = readw(msc313e_clksrc + MSC313E_REG_CTRL);
writew(reg, msc313e_clksrc + MSC313E_REG_CTRL);
writew(0, base + MSC313E_REG_CTRL);
reg = readw(base + MSC313E_REG_CTRL);
writew(reg | MSC313E_REG_CTRL_TIMER_INT_EN, base + MSC313E_REG_CTRL);