Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[mirror_ubuntu-artful-kernel.git] / Documentation / devicetree / bindings / arm / cpus.txt

diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt
index 8fb074996cafc006549e2012f4c91496617eba57..9bddd9fc7b5a47d014aaccabbc6f5f3578a2c5b5 100644 (file)
--- 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"
@@ -190,6 +191,7 @@ nodes to be present and contain the properties described below.
                            "allwinner,sun6i-a31"
                            "allwinner,sun8i-a23"
                            "arm,psci"
+                           "arm,realview-smp"
                            "brcm,brahma-b15"
                            "marvell,armada-375-smp"
                            "marvell,armada-380-smp"
@@ -243,6 +245,23 @@ 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 {