65 lines
1.8 KiB
YAML
65 lines
1.8 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/arm/apple.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple ARM Machine Device Tree Bindings
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maintainers:
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- Hector Martin <marcan@marcan.st>
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description: |
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ARM platforms using SoCs designed by Apple Inc., branded "Apple Silicon".
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This currently includes devices based on the "M1" SoC, starting with the
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three Mac models released in late 2020:
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- Mac mini (M1, 2020)
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- MacBook Pro (13-inch, M1, 2020)
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- MacBook Air (M1, 2020)
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The compatible property should follow this format:
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compatible = "apple,<targettype>", "apple,<socid>", "apple,arm-platform";
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<targettype> represents the board/device and comes from the `target-type`
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property of the root node of the Apple Device Tree, lowercased. It can be
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queried on macOS using the following command:
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$ ioreg -d2 -l | grep target-type
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<socid> is the lowercased SoC ID. Apple uses at least *five* different
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names for their SoCs:
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- Marketing name ("M1")
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- Internal name ("H13G")
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- Codename ("Tonga")
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- SoC ID ("T8103")
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- Package/IC part number ("APL1102")
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Devicetrees should use the lowercased SoC ID, to avoid confusion if
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multiple SoCs share the same marketing name. This can be obtained from
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the `compatible` property of the arm-io node of the Apple Device Tree,
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which can be queried as follows on macOS:
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$ ioreg -n arm-io | grep compatible
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properties:
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$nodename:
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const: "/"
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compatible:
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oneOf:
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- description: Apple M1 SoC based platforms
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items:
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- enum:
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- apple,j274 # Mac mini (M1, 2020)
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- apple,j293 # MacBook Pro (13-inch, M1, 2020)
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- apple,j313 # MacBook Air (M1, 2020)
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- const: apple,t8103
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- const: apple,arm-platform
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additionalProperties: true
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...
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