SMMU_CR0
reg = bus_read_4(sc->res[0], SMMU_CR0);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);
reg = bus_read_4(sc->res[0], SMMU_CR0);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);
error = smmu_write_ack(sc, SMMU_CR0, SMMU_CR0ACK, reg);