Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
750 B
Plaintext
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 >;
|
|
};
|
|
|
|
<...>
|
|
|
|
};
|