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authorYuval Adam <_@yuv.al>2017-08-30 08:25:59 +0000
committerYuval Adam <_@yuv.al>2017-08-30 08:25:59 +0000
commit8e4bff4cab0ddac6060645b0715210484d02ff40 (patch)
tree3a5c3024371a04692a3a6d9974d001cdff8ebf84 /Documentation/devicetree/bindings/cpufreq/cpufreq-spear.txt
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+SPEAr cpufreq driver
+-------------------
+
+SPEAr SoC cpufreq driver for CPU frequency scaling.
+It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) systems
+which share clock across all CPUs.
+
+Required properties:
+- cpufreq_tbl: Table of frequencies CPU could be transitioned into, in the
+ increasing order.
+
+Optional properties:
+- clock-latency: Specify the possible maximum transition latency for clock, in
+ unit of nanoseconds.
+
+Both required and optional properties listed above must be defined under node
+/cpus/cpu@0.
+
+Examples:
+--------
+cpus {
+
+ <...>
+
+ cpu@0 {
+ compatible = "arm,cortex-a9";
+ reg = <0>;
+
+ <...>
+
+ cpufreq_tbl = < 166000
+ 200000
+ 250000
+ 300000
+ 400000
+ 500000
+ 600000 >;
+ };
+
+ <...>
+
+};