From: Mahesh Sivasubramanian <msivasub@xxxxxxxxxxxxxx>
Command DB provides information on shared resources like clocks,
regulators etc., probed at boot by the remote subsytem and made
available in shared memory.
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Mahesh Sivasubramanian <msivasub@xxxxxxxxxxxxxx>
Signed-off-by: Lina Iyer <ilina@xxxxxxxxxxxxxx>
---
.../devicetree/bindings/arm/msm/cmd-db.txt | 38 ++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/msm/cmd-db.txt
diff --git a/Documentation/devicetree/bindings/arm/msm/cmd-db.txt b/Documentation/devicetree/bindings/arm/msm/cmd-db.txt
new file mode 100644
index 000000000000..e21666e40ebf
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/cmd-db.txt
@@ -0,0 +1,38 @@
+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 devicetree representation of the command DB driver should be:
+
+PROPERTIES:
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: Should be "qcom,cmd-db"
+
+- memory-region:
+ Usage: required
+ Value type: <phandle>
+ Definition: The phandle to the reserved memory region.
+
+Example:
+
+ reserved-memory {
+ [...]
+ cmd_db_mem: qcom,cmd-db@c3f000c {
+ reg = <0x0 0xc3f000c 0x0 0x8>;
+ };
+ };
+
+ qcom,cmd-db@c3f000c {
+ compatible = "qcom,cmd-db";
+ memory-region = <&cmd_db_mem>;
+ };
--
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