In addition to transmitting resource state requests to the remote processor, the RSC is responsible for powering off/lowering the requirements from CPUs subsystem for the associated hardware like buses, clocks, and regulators when all CPUs and cluster is powered down. The power domain is configured to a low power state and when all the CPUs are powered down, the RSC can lower resource state requirements and power down the rails that power the CPUs. Add PM domain specifier property for RSC controller. Cc: devicetree@xxxxxxxxxxxxxxx Signed-off-by: Maulik Shah <mkshah@xxxxxxxxxxxxxx> Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> Acked-by: Rob Herring <robh@xxxxxxxxxx> --- Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt index 9b86d1e..5682806 100644 --- a/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt +++ b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt @@ -83,6 +83,14 @@ Properties: Value type: <string> Definition: Name for the RSC. The name would be used in trace logs. +- #power-domain-cells: + Usage: optional + Value type: <u32> + Definition: Must be 0. Number of cells in power domain specifier. + Optional for controllers that may be in 'solver' state + where they can be in autonomous mode executing low power + modes. + Drivers that want to use the RSC to communicate with RPMH must specify their bindings as child nodes of the RSC controllers they wish to communicate with. @@ -112,6 +120,7 @@ TCS-OFFSET: 0xD00 <SLEEP_TCS 3>, <WAKE_TCS 3>, <CONTROL_TCS 1>; + #power-domain-cells = <0>; }; Example 2: -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
