xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/bus/nvidia,tegra210-aconnect.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra ACONNECT Bus

description: |
  The Tegra ACONNECT bus is an AXI switch which is used to connect various
  components inside the Audio Processing Engine (APE). All CPU accesses to
  the APE subsystem go through the ACONNECT via an APB to AXI wrapper. All
  devices accessed via the ACONNECT are described by child-nodes.

maintainers:
  - Jon Hunter <jonathanh@nvidia.com>

properties:
  compatible:
    oneOf:
      - const: nvidia,tegra210-aconnect
      - items:
          - enum:
              - nvidia,tegra234-aconnect
              - nvidia,tegra186-aconnect
              - nvidia,tegra194-aconnect
          - const: nvidia,tegra210-aconnect

  clocks:
    items:
      - description: Must contain the entry for APE clock
      - description: Must contain the entry for APE interface clock

  clock-names:
    items:
      - const: ape
      - const: apb2ape

  power-domains:
    maxItems: 1

  "#address-cells":
    enum: [ 1, 2 ]

  "#size-cells":
    enum: [ 1, 2 ]

  ranges: true

patternProperties:
  "@[0-9a-f]+$":
    type: object

required:
  - compatible
  - clocks
  - clock-names
  - power-domains
  - "#address-cells"
  - "#size-cells"
  - ranges

additionalProperties: false

examples:
  - |
    #include<dt-bindings/clock/tegra210-car.h>

    aconnect@702c0000 {
        compatible = "nvidia,tegra210-aconnect";
        clocks = <&tegra_car TEGRA210_CLK_APE>,
                 <&tegra_car TEGRA210_CLK_APB2APE>;
        clock-names = "ape", "apb2ape";
        power-domains = <&pd_audio>;

        #address-cells = <1>;
        #size-cells = <1>;
        ranges = <0x702c0000 0x702c0000 0x00040000>;

        // Child device nodes follow ...
    };

...