iommu/arm-smmu: Add support for qcom,smmu-v2 variant

[ Upstream commit 89cddc563743cb1e0068867ac97013b2a5bf86aa ]

qcom,smmu-v2 is an arm,smmu-v2 implementation with specific
clock and power requirements.
On msm8996, multiple cores, viz. mdss, video, etc. use this
smmu. On sdm845, this smmu is used with gpu.
Add bindings for the same.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 15b5856..01a6a0e 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -117,6 +117,7 @@ enum arm_smmu_implementation {
        GENERIC_SMMU,
        ARM_MMU500,
        CAVIUM_SMMUV2,
+       QCOM_SMMUV2,
 };
 
 /* Until ACPICA headers cover IORT rev. C */
@@ -1910,6 +1911,7 @@ ARM_SMMU_MATCH_DATA(smmu_generic_v2, ARM_SMMU_V2, GENERIC_SMMU);
 ARM_SMMU_MATCH_DATA(arm_mmu401, ARM_SMMU_V1_64K, GENERIC_SMMU);
 ARM_SMMU_MATCH_DATA(arm_mmu500, ARM_SMMU_V2, ARM_MMU500);
 ARM_SMMU_MATCH_DATA(cavium_smmuv2, ARM_SMMU_V2, CAVIUM_SMMUV2);
+ARM_SMMU_MATCH_DATA(qcom_smmuv2, ARM_SMMU_V2, QCOM_SMMUV2);
 
 static const struct of_device_id arm_smmu_of_match[] = {
        { .compatible = "arm,smmu-v1", .data = &smmu_generic_v1 },
@@ -1918,6 +1920,7 @@ static const struct of_device_id arm_smmu_of_match[] = {
        { .compatible = "arm,mmu-401", .data = &arm_mmu401 },
        { .compatible = "arm,mmu-500", .data = &arm_mmu500 },
        { .compatible = "cavium,smmu-v2", .data = &cavium_smmuv2 },
+       { .compatible = "qcom,smmu-v2", .data = &qcom_smmuv2 },
        { },
 };
 MODULE_DEVICE_TABLE(of, arm_smmu_of_match);