REG_MMU_DCM_DIS
writel_relaxed(F_MMU_DCM, bank0->base + REG_MMU_DCM_DIS);
writel_relaxed(0, bank0->base + REG_MMU_DCM_DIS);
reg->dcm_dis = readl_relaxed(base + REG_MMU_DCM_DIS);
writel_relaxed(reg->dcm_dis, base + REG_MMU_DCM_DIS);