From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: Piero <ottuzzi@gmail.com>
Cc: linux-amlogic@lists.infradead.org
Subject: Re: Odroidc1 DVFS
Date: Fri, 8 Feb 2019 20:44:11 +0100 [thread overview]
Message-ID: <CAFBinCCnfVjKaB5pPcBphvuZgwa1QSD0DSHe0DHPT=dH-wBisg@mail.gmail.com> (raw)
In-Reply-To: <CAPo5REH3dQww=+Jv4U5dh1m8JpsGN+J0Bs500hLhrq-dJyM60A@mail.gmail.com>
Hi,
On Thu, Feb 7, 2019 at 3:53 PM Piero <ottuzzi@gmail.com> wrote:
>
> Hi,
>
> looking at linux-meson website[1] it looks like DVFS is available
> for odroidc1 but from my test compiling 5.0.0-rc5 from amlogic integ
> branch[2] I cannot see it working: what am I missing?
can you please show us your kernel .config as well?
I believe you're missing the PWM driver: CONFIG_PWM_MESON
> Attached you can find dmesg.
pwm-regulator regulator-vcck: Failed to get PWM: -517
it's "OK" that this message is shown a few times (assuming you have
CONFIG_PWM_MESON=m). Linux will solve it once modules are loaded, then
you'll get the following message:
pwm-regulator: supplied by regulator-dummy
(from that point on "lscpu", "cpupower frequency-info" or other tools
should show DVFS support)
Regards
Martin
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next prev parent reply other threads:[~2019-02-08 19:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-07 14:52 Odroidc1 DVFS Piero
2019-02-08 19:44 ` Martin Blumenstingl [this message]
2019-02-12 10:27 ` Piero
2019-02-17 14:13 ` Martin Blumenstingl
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