1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
| 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 >;
| };
|
| <...>
|
| };
|
|