1
0
mirror of https://github.com/torvalds/linux.git synced 2024-12-25 04:11:49 +00:00
linux/Documentation/devicetree/bindings/cpufreq/cpufreq-spear.txt
Deepak Sikri 4209932211 cpufreq: SPEAr: Add CPUFreq driver
SPEAr is an ARM based family of SoCs. This patch adds in support of cpufreq
driver for SPEAr SoCs. It is supported via DT only and so bindings are present
in binding document.

Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-11-27 14:05:26 +01:00

43 lines
750 B
Plaintext

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 >;
};
<...>
};