xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml

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

title: Qualcomm Remote File System Memory

description: |
  This binding describes the Qualcomm remote filesystem memory, which serves the
  purpose of describing the shared memory region used for remote processors to
  access block device data using the Remote Filesystem protocol.

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

allOf:
  - $ref: reserved-memory.yaml

properties:
  compatible:
    const: qcom,rmtfs-mem

  qcom,client-id:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: >
      identifier of the client to use this region for buffers

  qcom,vmid:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description: >
      Array of vmids of the remote processors, to set up memory protection
    minItems: 1
    maxItems: 2

required:
  - qcom,client-id

unevaluatedProperties: false

examples:
  - |
    reserved-memory {
        #address-cells = <1>;
        #size-cells = <1>;
        ranges;

        rmtfs@86700000 {
            compatible = "qcom,rmtfs-mem";
            reg = <0x86700000 0xe0000>;
            no-map;

            qcom,client-id = <1>;
        };
    };