apple.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/arm/apple.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Apple ARM Machine Device Tree Bindings
    8 
    9 maintainers:
   10   - Hector Martin <marcan@marcan.st>
   11 
   12 description: |
   13   ARM platforms using SoCs designed by Apple Inc., branded "Apple Silicon".
   14 
   15   This currently includes devices based on the "M1" SoC:
   16 
   17   - Mac mini (M1, 2020)
   18   - MacBook Pro (13-inch, M1, 2020)
   19   - MacBook Air (M1, 2020)
   20   - iMac (24-inch, M1, 2021)
   21 
   22   And devices based on the "M1 Pro" and "M1 Max" SoCs:
   23 
   24   - MacBook Pro (14-inch, M1 Pro, 2021)
   25   - MacBook Pro (14-inch, M1 Max, 2021)
   26   - MacBook Pro (16-inch, M1 Pro, 2021)
   27   - MacBook Pro (16-inch, M1 Max, 2021)
   28 
   29   The compatible property should follow this format:
   30 
   31   compatible = "apple,<targettype>", "apple,<socid>", "apple,arm-platform";
   32 
   33   <targettype> represents the board/device and comes from the `target-type`
   34   property of the root node of the Apple Device Tree, lowercased. It can be
   35   queried on macOS using the following command:
   36 
   37   $ ioreg -d2 -l | grep target-type
   38 
   39   <socid> is the lowercased SoC ID. Apple uses at least *five* different
   40   names for their SoCs:
   41 
   42   - Marketing name ("M1")
   43   - Internal name ("H13G")
   44   - Codename ("Tonga")
   45   - SoC ID ("T8103")
   46   - Package/IC part number ("APL1102")
   47 
   48   Devicetrees should use the lowercased SoC ID, to avoid confusion if
   49   multiple SoCs share the same marketing name. This can be obtained from
   50   the `compatible` property of the arm-io node of the Apple Device Tree,
   51   which can be queried as follows on macOS:
   52 
   53   $ ioreg -n arm-io | grep compatible
   54 
   55 properties:
   56   $nodename:
   57     const: "/"
   58   compatible:
   59     oneOf:
   60       - description: Apple M1 SoC based platforms
   61         items:
   62           - enum:
   63               - apple,j274 # Mac mini (M1, 2020)
   64               - apple,j293 # MacBook Pro (13-inch, M1, 2020)
   65               - apple,j313 # MacBook Air (M1, 2020)
   66               - apple,j456 # iMac (24-inch, 4x USB-C, M1, 2021)
   67               - apple,j457 # iMac (24-inch, 2x USB-C, M1, 2021)
   68           - const: apple,t8103
   69           - const: apple,arm-platform
   70       - description: Apple M1 Pro SoC based platforms
   71         items:
   72           - enum:
   73               - apple,j314s # MacBook Pro (14-inch, M1 Pro, 2021)
   74               - apple,j316s # MacBook Pro (16-inch, M1 Pro, 2021)
   75           - const: apple,t6000
   76           - const: apple,arm-platform
   77       - description: Apple M1 Max SoC based platforms
   78         items:
   79           - enum:
   80               - apple,j314c # MacBook Pro (14-inch, M1 Max, 2021)
   81               - apple,j316c # MacBook Pro (16-inch, M1 Max, 2021)
   82           - const: apple,t6001
   83           - const: apple,arm-platform
   84 
   85 additionalProperties: true
   86 
   87 ...

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