Architectures and Processors forum no C bit in SMMU_CBn_SCTLR

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no C bit in SMMU_CBn_SCTLR

Jerry over 10 years ago

I am reading SMMU spec V2.0, and wondering why no C bit in SMMU_CBn_SCTLR. There is M bit in it.

0 Martin Weidmann over 10 years ago

The SCTLR.C bit in the ARM architecture enables the data and unified caches. The SMMU does not include data/unified caches. Any caching would be done by a separate cache block, which would have it's own enables.
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0 Jerry over 10 years ago in reply to Martin Weidmann

Thanks a lot, Martin.
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