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