This introduces bindings for all three 2020 Apple M1 devices: * apple,j274 - Mac mini (M1, 2020) * apple,j293 - MacBook Pro (13-inch, M1, 2020) * apple,j313 - MacBook Air (M1, 2020)
Reviewed-by: Linus Walleij <linus.wall...@linaro.org> Reviewed-by: Rob Herring <r...@kernel.org> Signed-off-by: Hector Martin <mar...@marcan.st> --- .../devicetree/bindings/arm/apple.yaml | 64 +++++++++++++++++++ MAINTAINERS | 10 +++ 2 files changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/apple.yaml diff --git a/Documentation/devicetree/bindings/arm/apple.yaml b/Documentation/devicetree/bindings/arm/apple.yaml new file mode 100644 index 000000000000..1e772c85206c --- /dev/null +++ b/Documentation/devicetree/bindings/arm/apple.yaml @@ -0,0 +1,64 @@ +# 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 <mar...@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 + +... diff --git a/MAINTAINERS b/MAINTAINERS index 88ad851fb5da..bee9a57e6cec 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1637,6 +1637,16 @@ F: arch/arm/mach-alpine/ F: arch/arm64/boot/dts/amazon/ F: drivers/*/*alpine* +ARM/APPLE MACHINE SUPPORT +M: Hector Martin <mar...@marcan.st> +L: linux-arm-ker...@lists.infradead.org (moderated for non-subscribers) +S: Maintained +W: https://asahilinux.org +B: https://github.com/AsahiLinux/linux/issues +C: irc://chat.freenode.net/asahi-dev +T: git https://github.com/AsahiLinux/linux.git +F: Documentation/devicetree/bindings/arm/apple.yaml + ARM/ARTPEC MACHINE SUPPORT M: Jesper Nilsson <jesper.nils...@axis.com> M: Lars Persson <lars.pers...@axis.com> -- 2.30.0
