static void pl08x_ensure_on(void){
	unsigned int reg;

	reg = readl(pd.base + PL08X_OS_CFG);
	reg &= PL08X_MASK_CFG;
	reg |= PL08X_MASK_EN;
	mb();
	writel(reg, pd.base + PL08X_OS_CFG);
	mb();
}