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| author | Krishna Reddy <vdumpa@nvidia.com> | 2020-07-18 12:34:55 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-07-20 09:30:50 +0100 |
| commit | aab5a1c882760a5bc990b14e5c0c2ee4dab5f1ac (patch) | |
| tree | 66eaaf99f606d1050731cb8b4a369bfc04b47e08 /drivers/iommu/arm-smmu.c | |
| parent | 6c019f4e697ebed2225b20cc5d6276673834853d (diff) | |
| download | linux-aab5a1c882760a5bc990b14e5c0c2ee4dab5f1ac.tar.bz2 | |
iommu/arm-smmu: add NVIDIA implementation for ARM MMU-500 usage
NVIDIA's Tegra194 SoC has three ARM MMU-500 instances.
It uses two of the ARM MMU-500s together to interleave IOVA
accesses across them and must be programmed identically.
This implementation supports programming the two ARM MMU-500s
that must be programmed identically.
The third ARM MMU-500 instance is supported by standard
arm-smmu.c driver itself.
Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Pritesh Raithatha <praithatha@nvidia.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Link: https://lore.kernel.org/r/20200718193457.30046-4-vdumpa@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm-smmu.c')
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index de520115d3df..35422a17f610 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1946,6 +1946,7 @@ 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 = "nvidia,smmu-500", .data = &arm_mmu500 }, { .compatible = "qcom,smmu-v2", .data = &qcom_smmuv2 }, { }, }; |