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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
+
+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:
+
+ - Mac mini (M1, 2020)
+ - MacBook Pro (13-inch, M1, 2020)
+ - MacBook Air (M1, 2020)
+ - iMac (24-inch, M1, 2021)
+
+ Devices based on the "M2" SoC:
+
+ - MacBook Air (M2, 2022)
+ - MacBook Pro (13-inch, M2, 2022)
+ - Mac mini (M2, 2023)
+
+ And devices based on the "M1 Pro", "M1 Max" and "M1 Ultra" SoCs:
+
+ - MacBook Pro (14-inch, M1 Pro, 2021)
+ - MacBook Pro (14-inch, M1 Max, 2021)
+ - MacBook Pro (16-inch, M1 Pro, 2021)
+ - MacBook Pro (16-inch, M1 Max, 2021)
+ - Mac Studio (M1 Max, 2022)
+ - Mac Studio (M1 Ultra, 2022)
+
+ 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)
+ - apple,j456 # iMac (24-inch, 4x USB-C, M1, 2021)
+ - apple,j457 # iMac (24-inch, 2x USB-C, M1, 2021)
+ - const: apple,t8103
+ - const: apple,arm-platform
+
+ - description: Apple M2 SoC based platforms
+ items:
+ - enum:
+ - apple,j413 # MacBook Air (M2, 2022)
+ - apple,j473 # Mac mini (M2, 2023)
+ - apple,j493 # MacBook Pro (13-inch, M2, 2022)
+ - const: apple,t8112
+ - const: apple,arm-platform
+
+ - description: Apple M1 Pro SoC based platforms
+ items:
+ - enum:
+ - apple,j314s # MacBook Pro (14-inch, M1 Pro, 2021)
+ - apple,j316s # MacBook Pro (16-inch, M1 Pro, 2021)
+ - const: apple,t6000
+ - const: apple,arm-platform
+
+ - description: Apple M1 Max SoC based platforms
+ items:
+ - enum:
+ - apple,j314c # MacBook Pro (14-inch, M1 Max, 2021)
+ - apple,j316c # MacBook Pro (16-inch, M1 Max, 2021)
+ - apple,j375c # Mac Studio (M1 Max, 2022)
+ - const: apple,t6001
+ - const: apple,arm-platform
+
+ - description: Apple M1 Ultra SoC based platforms
+ items:
+ - enum:
+ - apple,j375d # Mac Studio (M1 Ultra, 2022)
+ - const: apple,t6002
+ - const: apple,arm-platform
+
+additionalProperties: true
+
+...