diff --git a/cpufreq/test_06.sh b/cpufreq/test_06.sh
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+++ b/cpufreq/test_06.sh
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+#!/bin/bash
+#
+# PM-QA validation test suite for the power management on ARM
+#
+# Copyright (C) 2011, Linaro Limited.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# Contributors:
+#     Daniel Lezcano <daniel.lezcano@linaro.org> (IBM Corporation)
+#       - initial API and implementation
+#
+
+# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/QA/Scripts#test_06
+
+source ../include/functions.sh
+
+CPUCYCLE=../utils/cpucycle
+
+compute_freq_ratio() {
+
+    local cpu=$1
+    local freq=$2
+
+    set_frequency $cpu $freq
+
+    result=$($CPUCYCLE $cpu)
+    if [ $? != 0 ]; then
+	return 1
+    fi
+
+    results[$index]=$(echo "scale=3;($result / $freq)" | bc -l)
+    index=$((index + 1))
+}
+
+compute_freq_ratio_sum() {
+
+    res=${results[$index]}
+    sum=$(echo "($sum + $res)" | bc -l)
+    index=$((index + 1))
+
+}
+
+__check_freq_deviation() {
+
+    res=${results[$index]}
+
+    # compute deviation
+    dev=$(echo "scale=3;((( $res - $avg ) / $avg) * 100 )" | bc -l)
+
+    # change to absolute
+    dev=$(echo $dev | awk '{ print ($1 >= 0) ? $1 : 0 - $1}')
+
+    index=$((index + 1))
+
+    res=$(echo "($dev > 5.0)" | bc -l)
+    if [ "$res" = "1" ]; then
+	return 1
+    fi
+
+    return 0
+}
+
+check_freq_deviation() {
+
+    local cpu=$1
+    local freq=$2
+
+    check "deviation for frequency $(frequnit $freq)" __check_freq_deviation
+
+}
+
+check_deviation() {
+
+    local cpu=$1
+
+    set_governor $cpu userspace
+
+    for_each_frequency $cpu compute_freq_ratio
+
+    index=0
+    sum=0
+
+    for_each_frequency $cpu compute_freq_ratio_sum
+
+    avg=$(echo "scale=3;($sum / $index)" | bc -l)
+
+    index=0
+    for_each_frequency $cpu check_freq_deviation
+}
+
+if [ $(id -u) != 0 ]; then
+    log_skip "run as non-root"
+    exit 0
+fi
+
+save_governors
+save_frequencies
+
+trap "restore_frequencies; restore_governors; sigtrap" SIGHUP SIGINT SIGTERM
+
+for_each_cpu check_deviation
+
+restore_frequencies
+restore_governors