S5P_PS_HOLD_CONTROL
value = pmu_raw_readl(S5P_PS_HOLD_CONTROL);
pmu_raw_writel(value, S5P_PS_HOLD_CONTROL);
value = pmu_raw_readl(S5P_PS_HOLD_CONTROL);
pmu_raw_writel(value, S5P_PS_HOLD_CONTROL);