| Qualcomm Resource Power Manager (RPM) |
| |
| 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. |
| |
| - compatible: |
| Usage: required |
| Value type: <string> |
| Definition: must be one of: |
| "qcom,rpm-apq8064" |
| "qcom,rpm-msm8660" |
| "qcom,rpm-msm8960" |
| |
| - reg: |
| Usage: required |
| Value type: <prop-encoded-array> |
| Definition: base address and size of the RPM's message ram |
| |
| - interrupts: |
| Usage: required |
| Value type: <prop-encoded-array> |
| Definition: three entries specifying the RPM's: |
| 1. acknowledgement interrupt |
| 2. error interrupt |
| 3. wakeup interrupt |
| |
| - interrupt-names: |
| Usage: required |
| Value type: <string-array> |
| Definition: must be the three strings "ack", "err" and "wakeup", in order |
| |
| - #address-cells: |
| Usage: required |
| Value type: <u32> |
| Definition: must be 1 |
| |
| - #size-cells: |
| Usage: required |
| Value type: <u32> |
| Definition: must be 0 |
| |
| - qcom,ipc: |
| Usage: required |
| Value type: <prop-encoded-array> |
| |
| Definition: three entries specifying the outgoing ipc bit used for |
| signaling the RPM: |
| - phandle to a syscon node representing the apcs registers |
| - u32 representing offset to the register within the syscon |
| - u32 representing the ipc bit within the register |
| |
| |
| = EXAMPLE |
| |
| #include <dt-bindings/mfd/qcom-rpm.h> |
| |
| rpm@108000 { |
| compatible = "qcom,rpm-msm8960"; |
| reg = <0x108000 0x1000>; |
| qcom,ipc = <&apcs 0x8 2>; |
| |
| interrupts = <0 19 0>, <0 21 0>, <0 22 0>; |
| interrupt-names = "ack", "err", "wakeup"; |
| |
| #address-cells = <1>; |
| #size-cells = <0>; |
| }; |
| |