dpm_init

来自「Linux下动态电源管理(Dynamic Power Management)的用」· 代码 · 共 56 行

#!/bin/sh

# Example DPM setup script for Ingenic jz47xx boards
#
# 2005 (c) Ingenic Semiconductor
#
# This file is licensed under  the terms of the GNU General Public 
# License version 2. This program is licensed "as is" without any 
# warranty of any kind, whether express or implied.

if [ ! -f /proc/driver/dpm/cmd ]
then
   echo "$0: DPM proc filesystem not present."
   echo "May need to enable CONFIG_DPM."
   exit
fi

# Init DPM
echo terminate > /proc/driver/dpm/cmd
echo init      > /proc/driver/dpm/cmd

# Create operating points

# create_opt <name> <Voltage> <NF> <NR> <NO> <ICLK_DIV> <SCLK_DIV> <MCLK_DIV> <PCLK_DIV>
#
# <name> is the name of the operating point.
# <Voltage> is not used.
# PLL_OUT = 3686400 * <NF> / (<NR> * <NO>)
# ICLK = PLL_OUT / <ICLK_DIV>
# SCLK = PLL_OUT / <SCLK_DIV>
# MCLK = PLL_OUT / <MCLK_DIV>
# PCLK = PLL_OUT / <PCLK_DIV>
#
echo create_opt opt_350 0  190  2  1  1  3  3  3  > /proc/driver/dpm/cmd
echo create_opt opt_175 0  190  2  1  2  6  6  6  > /proc/driver/dpm/cmd
echo create_opt opt_58  0  190  2  1  6  12 12 12  > /proc/driver/dpm/cmd

# Create classes
echo create_class cls_350 opt_350 > /proc/driver/dpm/cmd
echo create_class cls_175 opt_175 > /proc/driver/dpm/cmd
echo create_class cls_58  opt_58  > /proc/driver/dpm/cmd

# Create policies
echo "create_policy 350 cls_350 cls_350 cls_350 cls_350" \
                        "cls_350 cls_350 cls_350 cls_350" \
			"cls_350" \
			"cls_350 cls_350 cls_350 cls_350" > /proc/driver/dpm/cmd
echo "create_policy 175 cls_175 cls_175 cls_175 cls_175" \
                        "cls_175 cls_175 cls_175 cls_175" \
			"cls_175" \
			"cls_175 cls_175 cls_175 cls_175" > /proc/driver/dpm/cmd
echo "create_policy 58 cls_58 cls_58 cls_58 cls_58" \
                        "cls_58 cls_58 cls_58 cls_58" \
			"cls_58" \
			"cls_58 cls_58 cls_58 cls_58" > /proc/driver/dpm/cmd