| Qualcomm Resource Power Manager (RPM) over SMD |
| |
| This driver is used to interface with the Resource Power Manager (RPM) found in |
| various Qualcomm platforms. The RPM allows each component in the system to vote |
| for state of the system resources, such as clocks, regulators and bus |
| frequencies. |
| |
| The SMD information for the RPM edge should be filled out. See qcom,smd.txt for |
| the required edge properties. All SMD related properties will reside within the |
| RPM node itself. |
| |
| = SUBDEVICES |
| |
| The RPM exposes resources to its subnodes. The rpm_requests node must be |
| present and this subnode may contain children that designate regulator |
| resources. |
| |
| - compatible: |
| Usage: required |
| Value type: <string> |
| Definition: must be one of: |
| "qcom,rpm-apq8084" |
| "qcom,rpm-msm8916" |
| "qcom,rpm-msm8974" |
| "qcom,rpm-msm8998" |
| |
| - qcom,smd-channels: |
| Usage: required |
| Value type: <string> |
| Definition: must be "rpm_requests" |
| |
| Refer to Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.txt |
| for information on the regulator subnodes that can exist under the rpm_requests. |
| |
| Example: |
| |
| soc { |
| apcs: syscon@f9011000 { |
| compatible = "syscon"; |
| reg = <0xf9011000 0x1000>; |
| }; |
| }; |
| |
| smd { |
| compatible = "qcom,smd"; |
| |
| rpm { |
| interrupts = <0 168 1>; |
| qcom,ipc = <&apcs 8 0>; |
| qcom,smd-edge = <15>; |
| |
| rpm_requests { |
| compatible = "qcom,rpm-msm8974"; |
| qcom,smd-channels = "rpm_requests"; |
| |
| ... |
| }; |
| }; |
| }; |