fix jetson tk1 cpu/gpu/emc clocks to specific frequency.

setclocks.sh

#!/bin/bash
#usage:
# $source setclocks.sh
# $setxxfreq ..
#set -x
function setcpufreq()
{
    if [ -z $1 ]; then
       echo "usage:setcpufreq <CPUFREQ in kHz>|max [ONLINECPUS](default 4)"
       echo "e.g: setcpufreq max or setcpufreq max 2"
       echo "avaliable CPU freqs(kHz):"
       cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
       return 0
    fi
    freq=$1
    if [ x"$1" = xmax ]; then
        freq=`cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq`
    fi
    echo N > /sys/module/qos/parameters/enable
    echo 0 > /sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/enable
    #disable emc dvs
    #echo N > /sys/module/tegra12_emc/parameters/emc_enable
    #disable core dvs
    echo Y > /sys/module/tegra12_dvfs/parameters/disable_core
    #disable CPU dvs
    echo Y > /sys/module/tegra12_dvfs/parameters/disable_cpu

    echo 1 > /sys/kernel/cluster/immediate
    echo 1 > /sys/kernel/cluster/force
    echo "G" > /sys/kernel/cluster/active
    echo "userspace" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

    echo "fixing cpu freq to $freq"
    echo $freq  > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
    maxcpu=4
    if [ x"$2" = x1 ]; then
        maxcpu=1
    elif [ x"$2" = x2 ]; then
        maxcpu=2
    elif [ x"$2" = x3 ]; then
        maxcpu=3
    else
        maxcpu=4
    fi
    echo "maxcpu $maxcpu"
    i=1
    while [ $i -lt $maxcpu ] ;do
        if [ `cat /sys/devices/system/cpu/cpu$i/online` = 0 ]; then
            echo 1 > /sys/devices/system/cpu/cpu$i/online
        fi
        i=$(($i+1))
    done

    while [ $i -lt 4 ] ;do
        if [ `cat /sys/devices/system/cpu/cpu$i/online` = 1 ]; then
            echo 0 > /sys/devices/system/cpu/cpu$i/online
        fi
        i=$(($i+1))
    done
}

function setemcfreq()
{
    if [ -z $1 ]; then
       echo "usage:setemcfreq <EMCFREQ in kHZ>|max"
       echo "avaliable EMC freqs:"
       cat /sys/kernel/debug/clock/emc/possible_rates
       return 0
    fi
    if [ x"$1" = xmax ]; then
        freq=`cat /sys/kernel/debug/clock/emc/max`
    else
        freq=$(($1*1000))
    fi
    echo "fixing emc freq to $freq"
    echo $freq > /sys/kernel/debug/clock/override.emc/rate
    echo 1 > /sys/kernel/debug/clock/override.emc/state
}

function setgpufreq()
{
    if [ -z $1 ]; then
       echo "usage:setgpufreq <EMCFREQ in kHZ>|max"
       echo "avaliable GPU freqs:"
       cat /sys/kernel/debug/clock/gbus/possible_rates
       return 0
    fi
    if [ x"$1" = xmax ]; then
        freq=`cat /sys/kernel/debug/clock/gbus/max`
    else
        freq=$(($1*1000))
    fi
    echo "fixing gpu freq to $freq"
    echo $freq > /sys/kernel/debug/clock/override.gbus/rate
    echo 1 > /sys/kernel/debug/clock/override.gbus/state

}