1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/qcom,glink-rpm-edge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Qualcomm G-Link RPM edge
8
9 description: |
10 Qualcomm G-Link edge, a FIFO based mechanism for communication with Resource
11 Power Manager (RPM) on various Qualcomm platforms.
12
13 maintainers:
14 - Bjorn Andersson <andersson@kernel.org>
15
16 properties:
17 compatible:
18 const: qcom,glink-rpm
19
20 label:
21 description:
22 Name of the edge, used for debugging and identification purposes. The
23 node name will be used if this is not present.
24
25 interrupts:
26 maxItems: 1
27
28 mboxes:
29 items:
30 - description: rpm_hlos mailbox in APCS
31
32 qcom,remote-pid:
33 $ref: /schemas/types.yaml#/definitions/uint32
34 description:
35 The identifier for the remote processor as known by the rest of the
36 system.
37
38 qcom,rpm-msg-ram:
39 $ref: /schemas/types.yaml#/definitions/phandle
40 description: |
41 RPM message memory resource (compatible: qcom,rpm-msg-ram).
42
43 rpm-requests:
44 type: object
45 $ref: /schemas/soc/qcom/qcom,smd-rpm.yaml#
46 unevaluatedProperties: false
47 description:
48 Qualcomm Resource Power Manager (RPM) over G-Link
49
50 properties:
51 qcom,intents:
52 $ref: /schemas/types.yaml#/definitions/uint32-matrix
53 minItems: 1
54 maxItems: 32
55 items:
56 items:
57 - description: size of each intent to preallocate
58 - description: amount of intents to preallocate
59 minimum: 1
60 description:
61 List of (size, amount) pairs describing what intents should be
62 preallocated for this virtual channel. This can be used to tweak the
63 default intents available for the channel to meet expectations of the
64 remote.
65
66 required:
67 - qcom,glink-channels
68
69 required:
70 - compatible
71 - interrupts
72 - mboxes
73
74 anyOf:
75 - required:
76 - qcom,remote-pid
77 - required:
78 - qcom,rpm-msg-ram
79
80 additionalProperties: false
81
82 examples:
83 - |
84 #include <dt-bindings/interrupt-controller/arm-gic.h>
85
86 glink-edge {
87 compatible = "qcom,glink-rpm";
88 interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
89 mboxes = <&apcs_glb 0>;
90 qcom,rpm-msg-ram = <&rpm_msg_ram>;
91
92 rpm-requests {
93 compatible = "qcom,rpm-msm8996", "qcom,glink-smd-rpm";
94 qcom,glink-channels = "rpm_requests";
95
96 /* ... */
97 };
98 };
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