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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/gpu/apple,agx.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/gpu/apple,agx.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Apple SoC GPU

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maintainers:

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  - Sasha Finkelstein <fnkl.kernel@gmail.com>

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properties:

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  compatible:

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    oneOf:

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      - enum:

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          - apple,agx-g13g

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          - apple,agx-g13s

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          - apple,agx-g14g

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      - items:

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          - enum:

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              - apple,agx-g13c

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              - apple,agx-g13d

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          - const: apple,agx-g13s

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  reg:

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    items:

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      - description: GPU coprocessor control registers

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      - description: GPU block MMIO registers

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  reg-names:

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    items:

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      - const: asc

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      - const: sgx

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  power-domains:

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    maxItems: 1

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  mboxes:

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    maxItems: 1

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  memory-region:

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    items:

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      - description: Region containing GPU MMU TTBs

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      - description: Region containing GPU MMU page tables

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      - description:

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          Region containing a shared handoff structure for VM

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          management coordination

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      - description: Calibration blob. Mostly power-related configuration

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      - description: Calibration blob. Mostly GPU-related configuration

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      - description: Shared global variables with GPU firmware

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  memory-region-names:

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    items:

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      - const: ttbs

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      - const: pagetables

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      - const: handoff

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      - const: hw-cal-a

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      - const: hw-cal-b

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      - const: globals

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  apple,firmware-abi:

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    $ref: /schemas/types.yaml#/definitions/uint32-array

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    minItems: 3

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    description:

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      macOS version the current firmware is paired with, used to pick

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      the version of firmware ABI to be used.

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      Bootloader will overwrite this

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required:

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  - compatible

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  - reg

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  - mboxes

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  - memory-region

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  - apple,firmware-abi

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additionalProperties: false

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examples:

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  - |

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    gpu@6400000 {

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        compatible = "apple,agx-g13g";

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        reg = <0x6400000 0x40000>,

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              <0x4000000 0x1000000>;

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        reg-names = "asc", "sgx";

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        mboxes = <&agx_mbox>;

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        power-domains = <&ps_gfx>;

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        memory-region = <&uat_ttbs>, <&uat_pagetables>, <&uat_handoff>,

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                        <&gpu_hw_cal_a>, <&gpu_hw_cal_b>, <&gpu_globals>;

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        memory-region-names = "ttbs", "pagetables", "handoff",

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                              "hw-cal-a", "hw-cal-b", "globals";

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        apple,firmware-abi = <0 0 0>;

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    };

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...

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