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linux/drivers/iommu/arm
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Bjorn Andersson aded8c7c2b iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context 
On SM8150 it's occasionally observed that the boot hangs in between the
writing of SMEs and context banks in arm_smmu_device_reset().

The problem seems to coincide with a display refresh happening after
updating the stream mapping, but before clearing - and there by
disabling translation - the context bank picked to emulate translation
bypass.

Resolve this by explicitly disabling the bypass context already in
cfg_probe.

Fixes: f9081b8ff5 ("iommu/arm-smmu-qcom: Implement S2CR quirk")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210106005038.4152731-1-bjorn.andersson@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
History 2021-01-07 14:10:46 +00:00
..
arm-smmu iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context 2021-01-07 14:10:46 +00:00
arm-smmu-v3 iommu/io-pgtable: Remove tlb_flush_leaf 2020-12-08 15:23:37 +00:00
Makefile iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory 2020-07-27 12:53:10 +01:00