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Diffstat (limited to 'Documentation/devicetree/bindings/arm/psci.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/psci.txt | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/Documentation/devicetree/bindings/arm/psci.txt b/Documentation/devicetree/bindings/arm/psci.txt deleted file mode 100644 index 433afe9cb590..000000000000 --- a/Documentation/devicetree/bindings/arm/psci.txt +++ /dev/null @@ -1,55 +0,0 @@ -* Power State Coordination Interface (PSCI) - -Firmware implementing the PSCI functions described in ARM document number -ARM DEN 0022A ("Power State Coordination Interface System Software on ARM -processors") can be used by Linux to initiate various CPU-centric power -operations. - -Issue A of the specification describes functions for CPU suspend, hotplug -and migration of secure software. - -Functions are invoked by trapping to the privilege level of the PSCI -firmware (specified as part of the binding below) and passing arguments -in a manner similar to that specified by AAPCS: - - r0 => 32-bit Function ID / return value - {r1 - r3} => Parameters - -Note that the immediate field of the trapping instruction must be set -to #0. - - -Main node required properties: - - - compatible : Must be "arm,psci" - - - method : The method of calling the PSCI firmware. Permitted - values are: - - "smc" : SMC #0, with the register assignments specified - in this binding. - - "hvc" : HVC #0, with the register assignments specified - in this binding. - -Main node optional properties: - - - cpu_suspend : Function ID for CPU_SUSPEND operation - - - cpu_off : Function ID for CPU_OFF operation - - - cpu_on : Function ID for CPU_ON operation - - - migrate : Function ID for MIGRATE operation - - -Example: - - psci { - compatible = "arm,psci"; - method = "smc"; - cpu_suspend = <0x95c10000>; - cpu_off = <0x95c10001>; - cpu_on = <0x95c10002>; - migrate = <0x95c10003>; - }; |
