"Joe Woodward" <jw@xxxxxxxxxxxxxx> writes:
> I have a GUMSTIX Overo AirSTORM module (AM3703-based).
>
> When booting the kernel the following features are listed:
> OMAP3630 ES1.2 (l2cache neon isp 192mhz_clk )
>
> After booting I get the following (repeating every few seconds):
>
> [ 81.122558] voltdm_scale: No voltage scale API registered for vdd_mpu_iva
> [ 81.130340] platform mpu.0: omap_target: unable to scale voltage up.
>
BTW, after boot, can you run the shell snippet below. This should run
the board through MPU DVFS for all the available OPPs:
Thanks,
Kevin
cd /sys/devices/system/cpu/cpu0/cpufreq
cat scaling_available_frequencies
cat scaling_cur_freq
echo userspace > scaling_governor
mpu_reg=regulator.3
for freq in `cat scaling_available_frequencies`; do
echo ${freq} > scaling_setspeed
echo -n "current freq: "
cat scaling_cur_freq
echo -n "current voltage: "
cat /sys/class/regulator/${mpu_reg}/microvolts
sleep 2
done
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