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-rw-r--r--Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt
index e41c98ffbccb..eb492a9a0e1f 100644
--- a/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt
+++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt
@@ -21,6 +21,11 @@ Optional properties:
- cooling-min-level:
- cooling-max-level:
Please refer to Documentation/devicetree/bindings/thermal/thermal.txt.
+- sampling-rate: Override the default sample rate (calculated from transition
+ latency, please refer to Documentation/cpu-freq/governors.txt) with a
+ user-specified value (in microseconds); if the value is zero, the default
+ (calculated) value will be used; if the value is a non-zero integer smaller
+ than sampling_rate_min, sampling_rate_min will be used
Examples:
@@ -39,6 +44,7 @@ cpus {
198000 850000
>;
clock-latency = <61036>; /* two CLK32 periods */
+ sampling-rate = <160000>; /* 160 milliseconds */
#cooling-cells = <2>;
cooling-min-level = <0>;
cooling-max-level = <2>;