dvfs-test-script

#!/bin/sh
CPUFREQ=/sys/devices/system/cpu/cpu0/cpufreq/

OCONF=$1
if [ -z "$OCONF" ]; then
    OCONF=0
fi

if [ ! -d "$CPUFREQ" ]; then
    echo "Cpufreq not present??"
    exit 1
fi

echo userspace > $CPUFREQ/scaling_governor
echo "==================="
echo "System CPUFREQ Configuration:"
echo "==================="
echo "Scaling driver:" `cat $CPUFREQ/scaling_driver`
REG=`ls -d /sys/class/regulator/*/cpufreq*`
if [ -z "$REG" ]; then
    echo "cpufreq-cpu0 Regulator not found. Checking for legacy mpu regulator"
    REG=`find /sys/class/regulator -follow -maxdepth 2 -name name|xargs grep -i mpu|cut -d ':' -f1`
fi
if [ ! -z "$REG" ]; then
    REG=`echo $REG|cut -d '/' -f1-5`
    echo "Scaling Regulator: $REG :" `cat $REG/name`
else
    echo "Scaling Regulator: not found"
fi

START=`date`
STARTS=`date "+%s"`
opp=`cat $CPUFREQ/scaling_available_frequencies`
echo "$opp are the available frequencies"

echo "==================="
echo "Boot Configuration:"
echo "==================="
if [ $OCONF -eq 1 ]; then
    echo "System info:"
    ./omapconf --cpuinfo
fi
echo "bogomips@ boot:"
cat /proc/cpuinfo|grep -i bogomips
echo "Boot scaling frequency ="`cat $CPUFREQ/scaling_cur_freq`
if [ ! -z "$REG" ]; then
    echo "Boot Scaling voltage(uV) ="`cat $REG/microvolts`
fi

echo "==================="
echo "Single OPP transition walk through test:"
echo "==================="
#1 second in each OPP
FIRST_TEST_TIME=1
idx=1
for i in $opp
do
    echo -n "$i" > $CPUFREQ/scaling_setspeed
    echo "$idx: TESTING for $FIRST_TEST_TIME seconds at" `cat $CPUFREQ/scaling_cur_freq`
    if [ $OCONF -eq 1 ]; then
        ./omapconf show opp
    fi
    echo "current scaling frequency(for $i) ="`cat $CPUFREQ/scaling_cur_freq`
    if [ ! -z "$REG" ]; then
        echo "current Scaling voltage(uV) ="`cat $REG/microvolts`
    fi
    echo "bogomips@ frequency $i:"
    echo -n "$i" > $CPUFREQ/scaling_setspeed
    cat /proc/cpuinfo|grep -i bogomips
    sleep $FIRST_TEST_TIME
    idx=`expr $idx + 1`
done

j=0
k=0
rotate=1000
echo "==================="
echo "Rapid transitions test (print every $rotate all OPP combinations):"
echo "==================="
while [ 1 ]
do
    for i in $opp
    do
        for j in $opp
        do
            echo -n "$i" > $CPUFREQ/scaling_setspeed
            echo -n "$j" > $CPUFREQ/scaling_setspeed
        done
    done
    j=`expr $j + 1`
    if [ $j -gt $rotate ]; then
        STARTN=`date "+%s"`
        DELTA=`expr $STARTN - $STARTS`
        echo "[$k] $rotate: $DELTA Seconds: $START : time now =" `date`
        k=`expr $k + 1`
        j=0
    fi
done