rpi2: cpufreq(4) support lost ?
Herbert J. Skuhra
herbert at mailbox.org
Sun Nov 12 19:03:47 UTC 2017
On Sat, 11 Nov 2017 12:47:47 +0100,
Claude Buisson <clbuisson at orange.fr> wrote:
>
> [I am not subscribed to this list - please answser to me]
>
> I recently upgraded a RPI2 Model B, from head r323691 armv6 to head
> r325110 + patch D12907 (lib/libc/gen/tls.c) armv7.
>
> In the dmesg, the lines:
>
> bcm2835_cpufreq0: <CPU Frequency Control> on cpu0
> bcm2835_cpufreq0: ARM 600MHz, Core 250MHz, SDRAM 400MHz, Turbo OFF
>
> disappeared, and the log shows:
>
> /etc/rc.d/powerd start
> powerd: no cpufreq(4) support -- aborting: No such file or directory
>
> As what seems to be a consequence, the system became much slower.
>
> Everything came back to normal when I copied the old rpi2.dtb to the
> new /boot/msdos/
The old rpi2.dtb is from an armv6 build, right?
> I tried the rpi2.dtb from the lastest snapshot
> FreeBSD-12.0-CURRENT-arm-armv7-RPI2-20171109-r325595.img
> and cpufreq(4) disappeared again.
>
> What I am missing ?
The problem obviously exists since the switch to armv7.
I use rpi2.dtb from my other RPI2 (stable/11).
--
Herbert
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