rpi2: cpufreq(4) support lost ?

[Herbert J. Skuhra]

On Sun, 12 Nov 2017 20:03:32 +0100,
"Herbert J. Skuhra" <herbert at mailbox.org> wrote:
> 
> 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).

I think the breakage happened earlier... r324184.

rpi2.dtb from a r324183 kernel build (armv6) works.

--
Herbert