X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=Documentation%2Fdevicetree%2Fbindings%2Farm%2Fcpus.txt;h=c352c11bd6411c95f6a8ee381f3471f60a991337;hp=3a07a87fef2087550cb24f0c4aff5f8e2fecab21;hb=5339f9d4c2ceccab00b28d65bd5c2b2cd6a3de05;hpb=172473407962df19d0344fcdba90b02d16fe98d0 diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 3a07a87fef20..c352c11bd641 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -157,6 +157,7 @@ nodes to be present and contain the properties described below. "arm,cortex-a17" "arm,cortex-a53" "arm,cortex-a57" + "arm,cortex-a72" "arm,cortex-m0" "arm,cortex-m0+" "arm,cortex-m1" @@ -242,6 +243,23 @@ nodes to be present and contain the properties described below. Definition: Specifies the syscon node controlling the cpu core power domains. + - dynamic-power-coefficient + Usage: optional + Value type: + Definition: A u32 value that represents the running time dynamic + power coefficient in units of mW/MHz/uVolt^2. The + coefficient can either be calculated from power + measurements or derived by analysis. + + The dynamic power consumption of the CPU is + proportional to the square of the Voltage (V) and + the clock frequency (f). The coefficient is used to + calculate the dynamic power as below - + + Pdyn = dynamic-power-coefficient * V^2 * f + + where voltage is in uV, frequency is in MHz. + Example 1 (dual-cluster big.LITTLE system 32-bit): cpus {