init.power.rc

#
# Copyright (C) 2017 The Android Open-Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

on property:sys.boot_completed=1
    # Enable bus-dcvs
    write /sys/class/devfreq/soc:qcom,cpubw/governor "bw_hwmon"
    write /sys/class/devfreq/soc:qcom,cpubw/polling_interval 50
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/mbps_zones "1144 1720 2086 2929 3879 5931 6881"
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/sample_ms 4
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/io_percent 68
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/hist_memory 20
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/hyst_length 10
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/down_thres 80
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/guard_band_mbps 0
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/up_scale 250
    write /sys/class/devfreq/soc:qcom,cpubw/bw_hwmon/idle_mbps 1600

    write /sys/class/devfreq/soc:qcom,mincpubw/governor "cpufreq"

    # Enable memlat governor
    write /sys/class/devfreq/soc:qcom,memlat-cpu0/governor "mem_latency"
    write /sys/class/devfreq/soc:qcom,memlat-cpu0/polling_interval 10
    write /sys/class/devfreq/soc:qcom,memlat-cpu0/mem_latency/ratio_ceil 400
    write /sys/class/devfreq/soc:qcom,memlat-cpu6/governor "mem_latency"
    write /sys/class/devfreq/soc:qcom,memlat-cpu6/polling_interval 10
    write /sys/class/devfreq/soc:qcom,memlat-cpu6/mem_latency/ratio_ceil 400

    write /sys/class/devfreq/soc:qcom,l3-cpu0/governor "mem_latency"
    write /sys/class/devfreq/soc:qcom,l3-cpu0/polling_interval 10
    write /sys/class/devfreq/soc:qcom,l3-cpu0/mem_latency/ratio_ceil 400
    write /sys/class/devfreq/soc:qcom,l3-cpu6/governor "mem_latency"
    write /sys/class/devfreq/soc:qcom,l3-cpu6/polling_interval 10
    write /sys/class/devfreq/soc:qcom,l3-cpu6/mem_latency/ratio_ceil 400

    # Limit the min frequency of LC to 576MHz
    write /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq 576000

    # Limit the min frequency of BC to 825MHz
    write /sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq 825600

    # Turn on sleep modes.
    write /sys/module/lpm_levels/parameters/sleep_disabled 0

    # Enable idle state listener
    write /sys/class/drm/card0/device/idle_encoder_mask 1
    write /sys/class/drm/card0/device/idle_timeout_ms 100

    # Change l3-cdsp to userspace governor
    write /sys/class/devfreq/soc:qcom,l3-cdsp/governor userspace
    chown system system /sys/class/devfreq/soc:qcom,l3-cdsp/userspace/set_freq

    # Disable CPU Retention
    write /sys/module/lpm_levels/L3/cpu0/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu1/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu2/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu3/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu4/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu5/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu6/ret/idle_enabled N
    write /sys/module/lpm_levels/L3/cpu7/ret/idle_enabled N

# Disable console_suspend to get better logging for kernel crashes
on boot
    write /sys/module/printk/parameters/console_suspend N

    #Enable suspend to idle mode to reduce latency during suspend/resume
    write /sys/power/mem_sleep "s2idle"

# If UART is on, enable console_suspend on boot_complete to save power
on property:sys.boot_completed=1 && property:init.svc.console=running
    write /sys/module/printk/parameters/console_suspend Y