1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: "http://devicetree.org/schemas/soc/qcom/qcom,smd-rpm.yaml#"
5$schema: "http://devicetree.org/meta-schemas/core.yaml#"
6
7title: Qualcomm Resource Power Manager (RPM) over SMD
8
9description: |
10  This driver is used to interface with the Resource Power Manager (RPM) found
11  in various Qualcomm platforms. The RPM allows each component in the system
12  to vote for state of the system resources, such as clocks, regulators and bus
13  frequencies.
14
15  The SMD information for the RPM edge should be filled out.  See qcom,smd.yaml
16  for the required edge properties.  All SMD related properties will reside
17  within the RPM node itself.
18
19  The RPM exposes resources to its subnodes.  The rpm_requests node must be
20  present and this subnode may contain children that designate regulator
21  resources.
22
23  Refer to Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.yaml
24  for information on the regulator subnodes that can exist under the
25  rpm_requests.
26
27maintainers:
28  - Andy Gross <agross@kernel.org>
29  - Bjorn Andersson <bjorn.andersson@linaro.org>
30
31properties:
32  compatible:
33    enum:
34      - qcom,rpm-apq8084
35      - qcom,rpm-ipq6018
36      - qcom,rpm-msm8226
37      - qcom,rpm-msm8916
38      - qcom,rpm-msm8936
39      - qcom,rpm-msm8953
40      - qcom,rpm-msm8974
41      - qcom,rpm-msm8976
42      - qcom,rpm-msm8996
43      - qcom,rpm-msm8998
44      - qcom,rpm-sdm660
45      - qcom,rpm-sm6115
46      - qcom,rpm-sm6125
47      - qcom,rpm-qcm2290
48      - qcom,rpm-qcs404
49
50  qcom,smd-channels:
51    $ref: /schemas/types.yaml#/definitions/string-array
52    description: Channel name used for the RPM communication
53    items:
54      - const: rpm_requests
55
56if:
57  properties:
58    compatible:
59      contains:
60        enum:
61          - qcom,rpm-apq8084
62          - qcom,rpm-msm8916
63          - qcom,rpm-msm8974
64          - qcom,rpm-msm8953
65then:
66  required:
67    - qcom,smd-channels
68
69required:
70  - compatible
71
72additionalProperties: false
73
74examples:
75  - |
76    #include <dt-bindings/interrupt-controller/arm-gic.h>
77    #include <dt-bindings/interrupt-controller/irq.h>
78
79    smd {
80        compatible = "qcom,smd";
81
82        rpm {
83            interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
84            qcom,ipc = <&apcs 8 0>;
85            qcom,smd-edge = <15>;
86
87                rpm-requests {
88                        compatible = "qcom,rpm-msm8974";
89                        qcom,smd-channels = "rpm_requests";
90
91                        /* Regulator nodes to follow */
92                };
93            };
94     };
95...
96