path: root/dts/Bindings/reserved-memory/qcom,cmd-db.txt
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+Command DB
+Command DB is a database that provides a mapping between resource key and the
+resource address for a system resource managed by a remote processor. The data
+is stored in a shared memory region and is loaded by the remote processor.
+Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for
+controlling shared resources. Depending on the board configuration the shared
+resource properties may change. These properties are dynamically probed by the
+remote processor and made available in the shared memory.
+The bindings for Command DB is specified in the reserved-memory section in
+devicetree. The devicetree representation of the command DB driver should be:
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: Should be "qcom,cmd-db"
+- reg:
+ Usage: required
+ Value type: <prop encoded array>
+ Definition: The register address that points to the actual location of
+ the Command DB in memory.
+ reserved-memory {
+ [...]
+ reserved-memory@85fe0000 {
+ reg = <0x0 0x85fe0000 0x0 0x20000>;
+ compatible = "qcom,cmd-db";
+ no-map;
+ };
+ };