mirror of
https://github.com/Evolution-X-Devices/kernel_xiaomi_sm8450-devicetrees
synced 2026-02-01 04:59:05 +00:00
b0e5152a74
Add devicetree bindings snapshot to the devicetree project.
This snapshot is taken as of the
'commit 5fba1b18cfc72e264e5f3ce49020ed322aa6ac9f ("Merge 5.6-rc3
into android-mainline")' of the kernel project.
Change-Id: Ia087ab2b7d4a2616ea446a69683a8b5b821d0448
38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
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:
|
|
|
|
Properties:
|
|
- 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.
|
|
|
|
Example:
|
|
|
|
reserved-memory {
|
|
[...]
|
|
reserved-memory@85fe0000 {
|
|
reg = <0x0 0x85fe0000 0x0 0x20000>;
|
|
compatible = "qcom,cmd-db";
|
|
no-map;
|
|
};
|
|
};
|