1 SPEAr cpufreq driver
2 -------------------
3
4 SPEAr SoC cpufreq driver for CPU frequency scaling.
5 It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) systems
6 which share clock across all CPUs.
7
8 Required properties:
9 - cpufreq_tbl: Table of frequencies CPU could be transitioned into, in the
10 increasing order.
11
12 Optional properties:
13 - clock-latency: Specify the possible maximum transition latency for clock, in
14 unit of nanoseconds.
15
16 Both required and optional properties listed above must be defined under node
17 /cpus/cpu@0.
18
19 Examples:
20 --------
21 cpus {
22
23 <...>
24
25 cpu@0 {
26 compatible = "arm,cortex-a9";
27 reg = <0>;
28
29 <...>
30
31 cpufreq_tbl = < 166000
32 200000
33 250000
34 300000
35 400000
36 500000
37 600000 >;
38 };
39
40 <...>
41
42 };
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