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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,smd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Shared Memory Driver
+
+maintainers:
+  - Andy Gross <agross@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description:
+  The Qualcomm Shared Memory Driver is a FIFO based communication channel for
+  sending data between the various subsystems in Qualcomm platforms.
+
+properties:
+  compatible:
+    const: qcom,smd
+
+patternProperties:
+  "^.*-edge|rpm$":
+    type: object
+    description:
+      Each subnode of the SMD node 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.
+
+    properties:
+      interrupts:
+        maxItems: 1
+
+      label:
+        $ref: /schemas/types.yaml#/definitions/string
+        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.
+
+      rpm-requests:
+        type: object
+        description:
+          In turn, subnodes of the "edges" represent devices tied to SMD
+          channels on that "edge". The names of the devices are not
+          important. The properties of these nodes are defined by the
+          individual bindings for the SMD devices.
+
+        properties:
+          qcom,smd-channels:
+            $ref: /schemas/types.yaml#/definitions/string-array
+            minItems: 1
+            maxItems: 32
+            description:
+              A list of channels tied to this device, used for matching the
+              device to channels.
+
+        required:
+          - compatible
+          - qcom,smd-channels
+
+        additionalProperties: true
+
+    required:
+      - interrupts
+      - qcom,smd-edge
+
+    oneOf:
+      - required:
+          - mboxes
+      - required:
+          - qcom,ipc
+
+    additionalProperties: false
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  # The following example represents a smd node, with one edge representing the
+  # "rpm" subsystem. For the "rpm" subsystem we have a device tied to the
+  # "rpm_request" channel.
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    shared-memory {
+        compatible = "qcom,smd";
+
+        rpm {
+            interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+            qcom,ipc = <&apcs 8 0>;
+            qcom,smd-edge = <15>;
+
+            rpm-requests {
+                compatible = "qcom,rpm-msm8974";
+                qcom,smd-channels = "rpm_requests";
+
+                clock-controller {
+                    compatible = "qcom,rpmcc-msm8974", "qcom,rpmcc";
+                    #clock-cells = <1>;
+                };
+
+            };
+        };
+    };