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#!/bin/bash
# This script is taken directly from the section 5.10 of the Freescale Application Note
# AN4509 and it simple prints the CPU clocks in a nice format
saved_path=$PWD
if ! mount|grep -sq '/sys/kernel/debug'; then
mount -t debugfs none /sys/kernel/debug
fi
printf "%-24s %-20s %3s %9s\n" "clock" "parent" "use" "flags" "rate"
for foo in $(find /sys/kernel/debug/clock -type d); do
if [ "$foo" = '/sys/kernel/debug/clock' ]; then
continue
fi
cd $foo
ec="$(cat usecount)"
rate="$(cat rate)"
flag="$(cat flags)"
clk="$(basename $foo)"
cd ..
parent="$(basename $PWD)"
if [ "$parent" = 'clock' ]; then
parent=" ---"
fi
printf "%-24s %-24s %2d %2d %10d\n" "$clk" "$parent" "$ec" "$flag" "$rate"
cd $saved_path
done
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