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
7 title: Qualcomm Resource Power Manager (RPM) over SMD/GLINK
8
9 description: |
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 or GLINK information for the RPM edge should be filled out. See
16 qcom,smd.yaml for the required edge properties. All SMD/GLINK related
17 properties will reside 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
27 maintainers:
28 - Andy Gross <agross@kernel.org>
29 - Bjorn Andersson <bjorn.andersson@linaro.org>
30
31 properties:
32 compatible:
33 oneOf:
34 - items:
35 - enum:
36 - qcom,rpm-apq8084
37 - qcom,rpm-mdm9607
38 - qcom,rpm-msm8226
39 - qcom,rpm-msm8610
40 - qcom,rpm-msm8909
41 - qcom,rpm-msm8916
42 - qcom,rpm-msm8917
43 - qcom,rpm-msm8936
44 - qcom,rpm-msm8937
45 - qcom,rpm-msm8952
46 - qcom,rpm-msm8953
47 - qcom,rpm-msm8974
48 - qcom,rpm-msm8976
49 - qcom,rpm-msm8994
50 - const: qcom,smd-rpm
51 - items:
52 - enum:
53 - qcom,rpm-ipq6018
54 - qcom,rpm-ipq9574
55 - qcom,rpm-msm8996
56 - qcom,rpm-msm8998
57 - qcom,rpm-qcm2290
58 - qcom,rpm-qcs404
59 - qcom,rpm-sdm660
60 - qcom,rpm-sm6115
61 - qcom,rpm-sm6125
62 - qcom,rpm-sm6375
63 - const: qcom,glink-smd-rpm
64
65 clock-controller:
66 $ref: /schemas/clock/qcom,rpmcc.yaml#
67 unevaluatedProperties: false
68
69 power-controller:
70 $ref: /schemas/power/qcom,rpmpd.yaml#
71
72 qcom,glink-channels:
73 $ref: /schemas/types.yaml#/definitions/string-array
74 description: Channel name used for the RPM communication
75 items:
76 - const: rpm_requests
77
78 qcom,smd-channels:
79 $ref: /schemas/types.yaml#/definitions/string-array
80 description: Channel name used for the RPM communication
81 items:
82 - const: rpm_requests
83
84 patternProperties:
85 "^regulators(-[01])?$":
86 $ref: /schemas/regulator/qcom,smd-rpm-regulator.yaml#
87 unevaluatedProperties: false
88
89 if:
90 properties:
91 compatible:
92 contains:
93 const: qcom,smd-rpm
94 then:
95 properties:
96 qcom,glink-channels: false
97 required:
98 - qcom,smd-channels
99 else:
100 properties:
101 qcom,smd-channels: false
102 required:
103 - qcom,glink-channels
104
105 required:
106 - compatible
107
108 additionalProperties: false
109
110 examples:
111 - |
112 #include <dt-bindings/interrupt-controller/arm-gic.h>
113 #include <dt-bindings/interrupt-controller/irq.h>
114
115 remoteproc {
116 compatible = "qcom,msm8916-rpm-proc", "qcom,rpm-proc";
117
118 smd-edge {
119 interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
120 qcom,ipc = <&apcs 8 0>;
121 qcom,smd-edge = <15>;
122
123 rpm-requests {
124 compatible = "qcom,rpm-msm8916", "qcom,smd-rpm";
125 qcom,smd-channels = "rpm_requests";
126
127 clock-controller {
128 compatible = "qcom,rpmcc-msm8916", "qcom,rpmcc";
129 #clock-cells = <1>;
130 clocks = <&xo_board>;
131 clock-names = "xo";
132 };
133
134 power-controller {
135 compatible = "qcom,msm8916-rpmpd";
136 #power-domain-cells = <1>;
137 operating-points-v2 = <&rpmpd_opp_table>;
138
139 rpmpd_opp_table: opp-table {
140 compatible = "operating-points-v2";
141
142 opp-1 {
143 opp-level = <1>;
144 };
145 opp-2 {
146 opp-level = <2>;
147 };
148 };
149 };
150 };
151 };
152 };
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