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

[Rob Herring]

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 at 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 at kernel.org>