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#!/bin/sh
#"NVIDIA specific init script"
nvexec() {
# power state
if [ -e /sys/power/state ]; then
chmod 0666 /sys/power/state
fi
# Set minimum cpu freq.
if [ -e /sys/devices/soc0/family ]; then
SOCFAMILY="`cat /sys/devices/soc0/family`"
fi
if [ "$SOCFAMILY" = "Tegra13" ] &&
[ -e /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq ]; then
sudo bash -c "echo -n 510000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq"
fi
# CPU hotplugging
if [ -d /sys/devices/system/cpu/cpuquiet/tegra_cpuquiet ] ; then
echo 500 > /sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/down_delay
echo 1 > /sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/enable
elif [ -w /sys/module/cpu_tegra3/parameters/auto_hotplug ] ; then
# compatibility for prior kernels without cpuquiet support
echo 1 > /sys/module/cpu_tegra3/parameters/auto_hotplug
fi
# lp2 idle state
if [ -e /sys/module/cpuidle/parameters/power_down_in_idle ] ; then
echo "Y" > /sys/module/cpuidle/parameters/power_down_in_idle
elif [ -e /sys/module/cpuidle/parameters/lp2_in_idle ] ; then
# compatibility for prior kernels
echo "Y" > /sys/module/cpuidle/parameters/lp2_in_idle
fi
#FIXME remove once kernel CL merges into main Bug 1231069
for uartInst in 0 1 2 3
do
uartNode="/dev/ttyHS$uartInst"
if [ -e "$uartNode" ]; then
ln -s /dev/ttyHS$uartInst /dev/ttyTHS$uartInst
fi
done
# remove power to dc.0 for jetson-tk1
machine=`cat /sys/devices/soc0/machine`
if [ "${machine}" = "jetson-tk1" ] ; then
echo 4 > /sys/class/graphics/fb0/blank
if [ -e /sys/devices/platform/tegra-otg/enable_device ] ; then
echo 0 > /sys/devices/platform/tegra-otg/enable_device
fi
if [ -e /sys/devices/platform/tegra-otg/enable_host ] ; then
echo 1 > /sys/devices/platform/tegra-otg/enable_host
fi
fi
# CPU frequency governor
if [ -e /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors ]; then
read governors < /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
case $governors in
*interactive*)
echo interactive > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
if [ -e /sys/devices/system/cpu/cpufreq/interactive ] ; then
echo "1224000" > /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
echo "95" > /sys/devices/system/cpu/cpufreq/interactive/target_loads
echo "20000" > /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
fi
;;
*)
;;
esac
fi
# CPU frequency boost on input event
if [ -e /sys/module/input_cfboost/parameters/boost_freq ]; then
echo "1224000" > /sys/module/input_cfboost/parameters/boost_freq
fi
}
case "$1" in
start)
nvexec
exit 0
;;
*)
exit 1
esac
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