1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/reserved-me 4 $id: http://devicetree.org/schemas/reserved-memory/qcom,cmd-db.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Qualcomm Command DB 7 title: Qualcomm Command DB
8 8
9 description: | 9 description: |
10 Command DB is a database that provides a map 10 Command DB is a database that provides a mapping between resource key and the
11 resource address for a system resource manag 11 resource address for a system resource managed by a remote processor. The data
12 is stored in a shared memory region and is l 12 is stored in a shared memory region and is loaded by the remote processor.
13 13
14 Some of the Qualcomm Technologies Inc SoC's 14 Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for
15 controlling shared resources. Depending on t 15 controlling shared resources. Depending on the board configuration the shared
16 resource properties may change. These proper 16 resource properties may change. These properties are dynamically probed by the
17 remote processor and made available in the s 17 remote processor and made available in the shared memory.
18 18
19 maintainers: 19 maintainers:
20 - Bjorn Andersson <bjorn.andersson@linaro.org 20 - Bjorn Andersson <bjorn.andersson@linaro.org>
21 21
22 allOf: 22 allOf:
23 - $ref: reserved-memory.yaml 23 - $ref: reserved-memory.yaml
24 24
25 properties: 25 properties:
26 compatible: 26 compatible:
27 const: qcom,cmd-db 27 const: qcom,cmd-db
28 28
29 required: 29 required:
30 - reg 30 - reg
31 31
32 unevaluatedProperties: false 32 unevaluatedProperties: false
33 33
34 examples: 34 examples:
35 - | 35 - |
36 reserved-memory { 36 reserved-memory {
37 #address-cells = <1>; 37 #address-cells = <1>;
38 #size-cells = <1>; 38 #size-cells = <1>;
39 ranges; 39 ranges;
40 40
41 reserved-memory@85fe0000 { 41 reserved-memory@85fe0000 {
42 reg = <0x85fe0000 0x20000>; 42 reg = <0x85fe0000 0x20000>;
43 compatible = "qcom,cmd-db"; 43 compatible = "qcom,cmd-db";
44 no-map; 44 no-map;
45 }; 45 };
46 }; 46 };
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