Documentation/devicetree/bindings/remoteproc/qcom,smd-edge.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/remoteproc/qcom,smd-edge.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm SMD Edge communication channel nodes

maintainers:
  - Bjorn Andersson <bjorn.andersson@linaro.org>

description:
  Qualcomm SMD subnode represents a remote subsystem or a remote processor of
  some sort - or in SMD language an "edge". The name of the edges are not
  important.
  See also Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml

properties:
  $nodename:
    const: "smd-edge"

  interrupts:
    maxItems: 1

  label:
    description:
      Name of the edge, used for debugging and identification purposes. The
      node name will be used if this is not present.

  mboxes:
    maxItems: 1
    description:
      Reference to the mailbox representing the outgoing doorbell in APCS for
      this client.

  qcom,ipc:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      - items:
          - description: phandle to a syscon node representing the APCS registers
          - description: u32 representing offset to the register within the syscon
          - description: u32 representing the ipc bit within the register
    description:
      Three entries specifying the outgoing ipc bit used for signaling the
      remote processor.

  qcom,smd-edge:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The identifier of the remote processor in the smd channel allocation
      table.

  qcom,remote-pid:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The identifier for the remote processor as known by the rest of the
      system.

required:
  - interrupts
  - qcom,smd-edge

oneOf:
  - required:
      - mboxes
  - required:
      - qcom,ipc

additionalProperties: true

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/mailbox/qcom-ipcc.h>

    remoteproc {
        // ...

        smd-edge {
            interrupts = <GIC_SPI 156 IRQ_TYPE_EDGE_RISING>;

            qcom,ipc = <&apcs 8 8>;
            qcom,smd-edge = <1>;
        };
    };