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[v2,1/2] dt-bindings: reserved-memory: document Qualcomm MPSS DSM memory

Message ID 20221114-narmstrong-sm8550-upstream-mpss_dsm-v2-1-f7c65d6f0e55@linaro.org
State New
Headers show
Series [v2,1/2] dt-bindings: reserved-memory: document Qualcomm MPSS DSM memory | expand

Commit Message

Neil Armstrong Nov. 18, 2022, 8:53 a.m. UTC 
Document the Qualcomm Modem Processing SubSystem DSM shared memory.

This memory zone is shared between the APPS and the MPSS subsystem,
and must be configured during the whole lifetime of the system.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 .../reserved-memory/qcom,mpss-dsm-mem.yaml         | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-dsm-mem.yaml b/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-dsm-mem.yaml
new file mode 100644
index 000000000000..226d0dfc422c
--- /dev/null
+++ b/Documentation/devicetree/bindings/reserved-memory/qcom,mpss-dsm-mem.yaml
@@ -0,0 +1,37 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reserved-memory/qcom,mpss-dsm-mem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Modem Processing SubSystem DSM Memory
+
+description: |
+  Qualcomm Modem Processing SubSystem DSM, which serves the purpose of
+  describing the shared memory region used for MPSS remote processors.
+
+maintainers:
+  - Bjorn Andersson <andersson@kernel.org>
+
+allOf:
+  - $ref: reserved-memory.yaml
+
+properties:
+  compatible:
+    const: qcom,mpss-dsm-mem
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        mpss-dsm@86700000 {
+            compatible = "qcom,mpss-dsm-mem";
+            reg = <0x86700000 0xe0000>;
+            no-map;
+        };
+    };