1 files changed, 98 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml
new file mode 100644
index 000000000..4149cf2b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/qcom,smem.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm Shared Memory Manager binding
+
+maintainers:
+  - Andy Gross <agross@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  This binding describes the Qualcomm Shared Memory Manager, a region of
+  reserved-memory used to share data between various subsystems and OSes in
+  Qualcomm platforms.
+
+properties:
+  compatible:
+    const: qcom,smem
+
+  reg:
+    maxItems: 1
+
+  memory-region:
+    maxItems: 1
+    description: handle to memory reservation for main SMEM memory region.
+
+  hwlocks:
+    maxItems: 1
+
+  qcom,rpm-msg-ram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: handle to RPM message memory resource
+
+  no-map: true
+
+required:
+  - compatible
+  - hwlocks
+
+oneOf:
+  - required:
+      - reg
+      - no-map
+  - required:
+      - memory-region
+
+additionalProperties: false
+
+examples:
+  - |
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        smem@fa00000 {
+            compatible = "qcom,smem";
+            reg = <0xfa00000 0x200000>;
+            no-map;
+
+            hwlocks = <&tcsr_mutex 3>;
+        };
+    };
+  - |
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        smem_region: smem@fa00000 {
+            reg = <0xfa00000 0x200000>;
+            no-map;
+        };
+    };
+
+    smem {
+        compatible = "qcom,smem";
+
+        memory-region = <&smem_region>;
+        qcom,rpm-msg-ram = <&rpm_msg_ram>;
+
+        hwlocks = <&tcsr_mutex 3>;
+    };
+
+    soc {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        rpm_msg_ram: sram@fc428000 {
+            compatible = "qcom,rpm-msg-ram";
+            reg = <0xfc428000 0x4000>;
+        };
+    };
+
+...