Re: [PATCH v2 1/6] dt-bindings: iommu: Add Apple SART DMA address filter

Rob Herring
2022-04-26T00:56:33Z

On Fri, 15 Apr 2022 16:20:50 +0200, Sven Peter wrote:
> Apple SoCs such as the M1 come with a simple DMA address filter called
> SART. Unlike a real IOMMU no pagetables can be configured but instead
> DMA transactions can be allowed for up to 16 paddr regions. The consumer
> also needs special support since not all DMA allocations have to be
> added to this filter.
>
> Signed-off-by: Sven Peter <sven@svenpeter.dev>
> ---
> v1 -> v2:
> - Moved to bindings/iommu since it is "Close enough to an IOMMU in
> terms of its purpose" (Rob Herring)
>
> .../devicetree/bindings/iommu/apple,sart.yaml | 52 +++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 53 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iommu/apple,sart.yaml
>

Reviewed-by: Rob Herring <robh@kernel.org>