ARM_SMMU_CR0ACK
ret = arm_smmu_write_reg_sync(smmu, 0, ARM_SMMU_CR0, ARM_SMMU_CR0ACK);
ARM_SMMU_CR0ACK);
ARM_SMMU_CR0ACK);
ARM_SMMU_CR0ACK);
ARM_SMMU_CR0ACK);
ARM_SMMU_CR0ACK);