ARM_SMMU_GR0_sCR0
case ARM_SMMU_GR0_sCR0:
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sCR0);
arm_smmu_gr0_write(smmu, ARM_SMMU_GR0_sCR0, reg);
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sCR0);
arm_smmu_gr0_write(smmu, ARM_SMMU_GR0_sCR0, reg);
arm_smmu_gr0_write(smmu, ARM_SMMU_GR0_sCR0, ARM_SMMU_sCR0_CLIENTPD);