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Date:      Sun, 2 Mar 2014 21:53:04 -0800
From:      Adrian Chadd <adrian@freebsd.org>
To:        Ian Lepore <ian@freebsd.org>
Cc:        Jordan Starcher <jstarcher@gmail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: Raspberry Pi Clock Frequency
Message-ID:  <CAJ-Vmo==C=iXq_GmJhfXn88wmO1TZyM0aTDpwC_og60V24tCjg@mail.gmail.com>
In-Reply-To: <1393819508.1149.274.camel@revolution.hippie.lan>
References:  <CAJTeA=Jmzu-yOdDm4MKKW-p9zfJYnr-7_Aeq1w5DYzh8G-9R6w@mail.gmail.com> <1393819508.1149.274.camel@revolution.hippie.lan>

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I believe it's something that is done in the bootloader config, not by
Linux itself.

Phew.


-a


On 2 March 2014 20:05, Ian Lepore <ian@freebsd.org> wrote:
> On Thu, 2014-01-23 at 23:31 -0500, Jordan Starcher wrote:
>> Hi,
>>
>> I was wondering if it is possible to adjust the CPU frequency on the
>> Raspberry Pi under FreeBSD 10.0-RELEASE? I've been trying to find what the
>> clock is currently set at using sysctl but I cannot seem to find any values
>> that show the frequency. I also checked the FreeBSD kernel source and did
>> not see any related tunable aside from hw.bcm2835.min_freq. Is this the
>> tunable I would use?
>>
>> Thanks,
>> Jordan
>
> I just realized this never got answered, sorry about that.
>
> That tunable you mention was a workaround for rpi sdcard problems, and
> it never actually helped anyway and should probably be removed.
>
> If there's a way to change the cpu frequency, it's not in the scanty
> little doc I've got about that processor.  If it can be done, the how-to
> can probably be found in the linux source, but I don't have time to work
> on it.
>
> -- Ian
>
>
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