1Qualcomm Resource Power Manager (RPM) over SMD 2 3This driver is used to interface with the Resource Power Manager (RPM) found in 4various Qualcomm platforms. The RPM allows each component in the system to vote 5for state of the system resources, such as clocks, regulators and bus 6frequencies. 7 8The SMD information for the RPM edge should be filled out. See qcom,smd.txt for 9the required edge properties. All SMD related properties will reside within the 10RPM node itself. 11 12= SUBDEVICES 13 14The RPM exposes resources to its subnodes. The rpm_requests node must be 15present and this subnode may contain children that designate regulator 16resources. 17 18- compatible: 19 Usage: required 20 Value type: <string> 21 Definition: must be one of: 22 "qcom,rpm-apq8084" 23 "qcom,rpm-msm8916" 24 "qcom,rpm-msm8974" 25 "qcom,rpm-msm8976" 26 "qcom,rpm-msm8998" 27 "qcom,rpm-sdm660" 28 "qcom,rpm-qcs404" 29 30- qcom,smd-channels: 31 Usage: required 32 Value type: <string> 33 Definition: must be "rpm_requests" 34 35Refer to Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.txt 36for information on the regulator subnodes that can exist under the rpm_requests. 37 38Example: 39 40 soc { 41 apcs: syscon@f9011000 { 42 compatible = "syscon"; 43 reg = <0xf9011000 0x1000>; 44 }; 45 }; 46 47 smd { 48 compatible = "qcom,smd"; 49 50 rpm { 51 interrupts = <0 168 1>; 52 qcom,ipc = <&apcs 8 0>; 53 qcom,smd-edge = <15>; 54 55 rpm_requests { 56 compatible = "qcom,rpm-msm8974"; 57 qcom,smd-channels = "rpm_requests"; 58 59 ... 60 }; 61 }; 62 }; 63