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Diffstat (limited to 'Bindings/arm/cpus.txt')
| -rw-r--r-- | Bindings/arm/cpus.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Bindings/arm/cpus.txt b/Bindings/arm/cpus.txt index 8b9e0a95de31..ae9be074d09f 100644 --- a/Bindings/arm/cpus.txt +++ b/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" @@ -188,15 +189,23 @@ nodes to be present and contain the properties described below. # On ARM 32-bit systems this property is optional and can be one of: "allwinner,sun6i-a31" + "allwinner,sun8i-a23" "arm,psci" + "arm,realview-smp" + "brcm,bcm-nsp-smp" "brcm,brahma-b15" "marvell,armada-375-smp" "marvell,armada-380-smp" + "marvell,armada-390-smp" "marvell,armada-xp-smp" + "mediatek,mt6589-smp" + "mediatek,mt81xx-tz-smp" "qcom,gcc-msm8660" "qcom,kpss-acc-v1" "qcom,kpss-acc-v2" + "rockchip,rk3036-smp" "rockchip,rk3066-smp" + "ste,dbx500-smp" - cpu-release-addr Usage: required for systems that have an "enable-method" @@ -237,6 +246,23 @@ 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: <prop-encoded-array> + 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 { |