How to change DDR Clock on ODROID-C2(android)

Official wiki page
http://odroid.com/dokuwiki/doku.php?id=en:c2_adjust_ddrclk

Guide to change DDR Clock by android update and recovery.

Open https://dn.odroid.com/S905/BootLoader/ODROID-C2/

Download files.

updatepackage-odroidc2-ddr-408.zip

updatepackage-odroidc2-ddr-792.zip

updatepackage-odroidc2-ddr-912.zip

updatepackage-odroidc2-ddr-1104.zip

Open Utility app.

Select "Package install from storage"

Select "File Manager" -> Download folder

Select updatepackage-odroidc2-ddr-xxx.zip wanted DDR clock.

Recovery!

After reboot, you can check the DDR configuration using the following logs of boot loader if you have a usb-uart module kit.

BL2 Built : 11:44:26, Nov 25 2015.
gxb gfb13a3b-c2 - jcao@wonton

Board ID = 8
set vcck to 1100 mv
set vddee to 1070 mv
CPU clk: 1536MHz
DDR channel setting: DDR0 Rank0+1 same
DDR0: 2048MB(auto) @ 1104MHz(2T)-14

overclock CPU and DDR clock for ODROID-C2

1. CPU 1.5GHz, DDR Clock 912MHz

2. CPU 1.7GHz, DDR Clock 912MHz

http://odroid.com/dokuwiki/doku.php?id=en:c2_set_cpu_freq

open boot.ini.

# setenv max_freq "2016"  # 2.016GHz
# setenv max_freq "1944"  # 1.944GHz
# setenv max_freq "1944"  # 1.944GHz
# setenv max_freq "1920"  # 1.920GHz
# setenv max_freq "1896"  # 1.896GHz
setenv max_freq "1752"  # 1.752GHz
# setenv max_freq "1680"  # 1.680GHz
# setenv max_freq "1656"  # 1.656GHz
#setenv max_freq "1536"  # 1.536GHz

3. CPU 1.7GHz, DDR Clock 1104MHz

http://odroid.com/dokuwiki/doku.php?id=en:c2_adjust_ddrclk

# su
# mount -o rw,remount /
# wget http://dn.odroid.com/S905/BootLoader/ODROID-C2/c2_update_ddrclk_android.sh
# chmod 755 ./c2_update_ddrclk_android.sh
# ./c2_update_ddrclk_android.sh 1104
# reboot