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64 lines
1.8 KiB
64 lines
1.8 KiB
# 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 <[email protected]> |
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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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