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 >; | |
}; | |
<...> | |
}; |