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dt-bindings: iommu: dart: Add apple,t6020-dart compatible

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t6020-dart is compatible to t8110-dart and annotated as such in Apple's
device tree. Add its per-SoC compatible in case t6020 specific handling
becomes necessary. The dart instances on M2 Pro/Max/Ultra based SoCs
differ in one aspect from the M2 based ones. They indicate an IAS of 42
requiring implementing support for a fouth page table level in the dart
driver and its io-pgtable [1].

[1]: https://lore.kernel.org/asahi/20250821-apple-dart-4levels-v2-0-e39af79daa37@jannau.net/

Reviewed-by: Neal Gompa <neal@gompa.dev>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2025-08-28 16:01:26 +02:00
parent 0b95df9004
commit 874c90221e
1 changed files with 9 additions and 5 deletions
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14
Documentation/devicetree/bindings/iommu/apple,dart.yaml
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@ -22,11 +22,15 @@ description: |+
properties:
compatible:
enum:
- apple,t8103-dart
- apple,t8103-usb4-dart
- apple,t8110-dart
- apple,t6000-dart
oneOf:
- enum:
- apple,t8103-dart
- apple,t8103-usb4-dart
- apple,t8110-dart
- apple,t6000-dart
- items:
- const: apple,t6020-dart
- const: apple,t8110-dart
reg:
maxItems: 1