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