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