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SMMU in Mali GPUs

Jay M. over 3 years ago

Hello everyone!

I'm wondering if any Arm Mali GPUs, except for Mali-G78AE, are connected to a SMMU.
I have checked that Mali-G610 isn't connected to SMMU (at least in sysfs & device tree).

It's common to have peripherals isolated via SMMU or IOMMU -- I wonder if there are any Mali GPUs that does this too.

Thank you!

Top replies

Peter Harris over 3 years ago in reply to Jay M. +2

Mali GPUs always have their own MMU - they are virtual memory processors. Just like the CPU the MMU at this level handles VA-to-IPA translations. The MMU inside the GPU is specifically designed for the...
Peter Harris over 3 years ago +1 verified

The memory system downstream of the GPU is a silicon partner implementation choice, so "it depends". It is common to have some type of SMMU on the GPU access path, although often with a large page size...
Jay M. over 3 years ago in reply to Peter Harris +1

Thanks a lot for your reply! :-) Mali GPUs often have their own MMU -- is this actually a SMMU that is looking slightly differently (as you pointed out)?

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0 Jay M. over 3 years ago in reply to Peter Harris

Thank you for the clarification! It's a lot of help for me!
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0 Jay M. over 3 years ago in reply to Peter Harris

Thank you for the clarification! It's a lot of help for me!
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