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iommu: arm-smmu: Fix Tegra workaround for PAGE_SIZE mappings

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PAGE_SIZE can be 16KB for Tegra which is not supported by MMU-500 on
both Tegra194 and Tegra234. Retain only valid granularities from
pgsize_bitmap which would either be 4KB or 64KB.

Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Link: https://lore.kernel.org/r/20240724173132.219978-1-amhetre@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Ashish Mhetre 2024-07-24 17:31:32 +00:00 committed by Will Deacon
parent 86c5eac3c4
commit 726d4f528d
1 changed files with 1 additions and 1 deletions
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drivers/iommu/arm/arm-smmu/arm-smmu-nvidia.c
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@ -277,7 +277,7 @@ static int nvidia_smmu_init_context(struct arm_smmu_domain *smmu_domain,
*/
if (of_device_is_compatible(np, "nvidia,tegra234-smmu") ||
of_device_is_compatible(np, "nvidia,tegra194-smmu")) {
smmu->pgsize_bitmap = PAGE_SIZE;
smmu->pgsize_bitmap &= GENMASK(PAGE_SHIFT, 0);
pgtbl_cfg->pgsize_bitmap = smmu->pgsize_bitmap;
}