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From: Jerome Marc <marcjero@yahoo.com>
Date: Sun, 29 May 2022 01:16:07 +0200
Message-ID: <CAD1Ag0ytC8yoOpadYtxwaMCG18u168x1fc_chrqW3wqrO4rayw@mail.gmail.com>
Subject: Raspberry PI cpufreq
To: ~alpine/users@lists.alpinelinux.org
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References: <CAD1Ag0ytC8yoOpadYtxwaMCG18u168x1fc_chrqW3wqrO4rayw.ref@mail.gmail.com>

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Hi,

I just installed Alpine 16 on an old Raspberry PI B.
I want to use the ondemand governor and set the freq between 100 and 700.
Unfortunately it looks like the arm_freq_min is ignored.
if I set :
arm_freq=700
arm_freq_min=500

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
returns 700000 only

But if I set
arm_freq=500

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
returns 700000 500000

Strange isn't it ? Did I misunderstand something? Or is there a bug in the
fernel/firmware ?

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<div dir=3D"ltr">Hi,<div><br></div><div>I just installed=C2=A0Alpine 16 on =
an old Raspberry PI B.</div><div>I want to use the ondemand=C2=A0governor a=
nd set the freq between 100 and 700. Unfortunately it looks like the arm_fr=
eq_min is ignored.</div><div>if I set :</div><div>arm_freq=3D700<br></div><=
div>arm_freq_min=3D500<br></div><div><br></div><div>cat /sys/devices/system=
/cpu/cpu0/cpufreq/scaling_available_frequencies returns 700000 only<br></di=
v><div><br></div><div>But if I set</div><div>arm_freq=3D500<br></div><div><=
br></div><div>cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_fr=
equencies returns 700000 500000<br></div><div><br></div><div>Strange isn=
9;t it ? Did I misunderstand=C2=A0something? Or is there a bug in the ferne=
l/firmware ?</div></div>

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