qcom,smd.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/soc/qcom/qcom,smd.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Qualcomm Shared Memory Driver
    8 
    9 maintainers:
   10   - Andy Gross <agross@kernel.org>
   11   - Bjorn Andersson <bjorn.andersson@linaro.org>
   12   - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
   13 
   14 description:
   15   The Qualcomm Shared Memory Driver is a FIFO based communication channel for
   16   sending data between the various subsystems in Qualcomm platforms.
   17 
   18 properties:
   19   compatible:
   20     const: qcom,smd
   21 
   22 patternProperties:
   23   "^.*-edge|rpm$":
   24     $ref: /schemas/remoteproc/qcom,smd-edge.yaml#
   25     description:
   26       Each subnode of the SMD node represents a remote subsystem or a remote
   27       processor of some sort - or in SMD language an "edge". The name of the
   28       edges are not important.
   29 
   30     properties:
   31       rpm-requests:
   32         type: object
   33         description:
   34           In turn, subnodes of the "edges" represent devices tied to SMD
   35           channels on that "edge". The names of the devices are not
   36           important. The properties of these nodes are defined by the
   37           individual bindings for the SMD devices.
   38 
   39         properties:
   40           qcom,smd-channels:
   41             $ref: /schemas/types.yaml#/definitions/string-array
   42             minItems: 1
   43             maxItems: 32
   44             description:
   45               A list of channels tied to this device, used for matching the
   46               device to channels.
   47 
   48         required:
   49           - compatible
   50           - qcom,smd-channels
   51 
   52         additionalProperties: true
   53 
   54     unevaluatedProperties: false
   55 
   56 required:
   57   - compatible
   58 
   59 additionalProperties: false
   60 
   61 examples:
   62   # The following example represents a smd node, with one edge representing the
   63   # "rpm" subsystem. For the "rpm" subsystem we have a device tied to the
   64   # "rpm_request" channel.
   65   - |
   66     #include <dt-bindings/interrupt-controller/arm-gic.h>
   67 
   68     shared-memory {
   69         compatible = "qcom,smd";
   70 
   71         rpm {
   72             interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
   73             qcom,ipc = <&apcs 8 0>;
   74             qcom,smd-edge = <15>;
   75 
   76             rpm-requests {
   77                 compatible = "qcom,rpm-msm8974";
   78                 qcom,smd-channels = "rpm_requests";
   79 
   80                 clock-controller {
   81                     compatible = "qcom,rpmcc-msm8974", "qcom,rpmcc";
   82                     #clock-cells = <1>;
   83                 };
   84 
   85             };
   86         };
   87     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/soc/qcom/qcom,smd.yaml

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sys/contrib/device-tree/Bindings/soc/qcom/qcom,smd.yaml