IRB_ADDR0
ir->reg_base + IRB_ADDR0);
writel(readl(ir->reg_base + IRB_ADDR0) & ~IRB_INIT_HIGH,
ir->reg_base + IRB_ADDR0);
writel(readl(ir->reg_base + IRB_ADDR0) | IRB_ENABLE,
ir->reg_base + IRB_ADDR0);