OS layers built on top of PSCI to enter low-power states require the power_state parameter to be passed to the PSCI CPU suspend method. This parameter is specific to a power state and platform specific, therefore must be provided by firmware to the OS in order to enable proper call sequence. This patch adds a property in the PSCI bindings that describes how the CPU suspend power_state parameter should be defined in DT in all device nodes that rely on PSCI CPU suspend method usage. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> --- Documentation/devicetree/bindings/arm/psci.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/psci.txt b/Documentation/devicetree/bindings/arm/psci.txt index 433afe9..6fc32a5 100644 --- a/Documentation/devicetree/bindings/arm/psci.txt +++ b/Documentation/devicetree/bindings/arm/psci.txt @@ -42,6 +42,13 @@ Main node optional properties: - migrate : Function ID for MIGRATE operation +Device tree nodes that require usage of PSCI CPU_SUSPEND function (ie idle +states bindings) must specify the following properties: + +- power-state + Value type: <u32> + Definition: power_state parameter to pass to the PSCI + suspend call. Example: -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
