Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml
Extension
.yaml
Size
2611 bytes
Lines
92
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mailbox/qcom-ipcc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Technologies, Inc. Inter-Processor Communication Controller

maintainers:
  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

description:
  The Inter-Processor Communication Controller (IPCC) is a centralized hardware
  to route interrupts across various subsystems. It involves a three-level
  addressing scheme called protocol, client and signal. For example, consider an
  entity on the Application Processor Subsystem (APSS) that wants to listen to
  Modem's interrupts via Shared Memory Point to Point (SMP2P) interface. In such
  a case, the client would be Modem (client-id is 2) and the signal would be
  SMP2P (signal-id is 2). The SMP2P itself falls under the Multiprocessor (MPROC)
  protocol (protocol-id is 0). Refer include/dt-bindings/mailbox/qcom-ipcc.h
  for the list of such IDs.

properties:
  compatible:
    items:
      - enum:
          - qcom,eliza-ipcc
          - qcom,glymur-ipcc
          - qcom,kaanapali-ipcc
          - qcom,milos-ipcc
          - qcom,qcs8300-ipcc
          - qcom,qdu1000-ipcc
          - qcom,sa8255p-ipcc
          - qcom,sa8775p-ipcc
          - qcom,sar2130p-ipcc
          - qcom,sc7280-ipcc
          - qcom,sc8280xp-ipcc
          - qcom,sdx75-ipcc
          - qcom,sm6350-ipcc
          - qcom,sm6375-ipcc
          - qcom,sm8250-ipcc
          - qcom,sm8350-ipcc
          - qcom,sm8450-ipcc
          - qcom,sm8550-ipcc
          - qcom,sm8650-ipcc
          - qcom,sm8750-ipcc
          - qcom,x1e80100-ipcc
      - const: qcom,ipcc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  interrupt-controller: true

  "#interrupt-cells":
    const: 3
    description:
      The first cell is the client-id, the second cell is the signal-id and the
      third cell is the interrupt type.

  "#mbox-cells":
    const: 2
    description:
      The first cell is the client-id, and the second cell is the signal-id.

required:
  - compatible

Annotation

Implementation Notes