CNEN_REG
writel(mask, bank->reg_base + PIC32_SET(CNEN_REG));
writel(mask, bank->reg_base + PIC32_CLR(CNEN_REG));
writel(mask, bank->reg_base + PIC32_SET(CNEN_REG));
cnen_rise = readl(bank->reg_base + CNEN_REG);