<settingsTab name="CPU VOLTAGE">
<settingsPane description="CPU Voltage Controls." name="CPU Voltage Controls">
<seekBar description="CPU Voltage for 1400 MHz. (Default: 1325 mV)"
			name="CPU Voltage 1400 MHz" action="cpu-voltage 1" unit="mV" min="1225" reversed="false" step="25" max="1425"/>
<seekBar description="CPU Voltage for 1200 MHz. (Default: 1275 mV)"
			name="CPU Voltage 1200 MHz" action="cpu-voltage 2" unit="mV" min="1175" reversed="false" step="25" max="1375"/>
<seekBar description="CPU Voltage for 1000 MHz. (Default: 1175 mV)"
			name="CPU Voltage 1000 MHz" action="cpu-voltage 3" unit="mV" min="1075" reversed="false" step="25" max="1275"/>
<seekBar description="CPU Voltage for 800 MHz. (Default: 1075 mV)"
			name="CPU Voltage 800 MHz" action="cpu-voltage 4" unit="mV" min="975" reversed="false" step="25" max="1175"/>
<seekBar description="CPU Voltage for 500 MHz. (Default: 975 mV)"
			name="CPU Voltage 500 MHz" action="cpu-voltage 5" unit="mV" min="875" reversed="false" step="25" max="1075"/>
<seekBar description="CPU Voltage for 200 MHz. (Default: 950 mV)"
			name="CPU Voltage 200 MHz" action="cpu-voltage 6" unit="mV" min="850" reversed="false" step="25" max="1050"/>
</settingsPane>

https://github.com/gustavoss/android_kernel_samsung_smdk4412/blob/1b6487b3ab90cd6f05d5abd6f4136477c2dc75ca/usr/galaxys2_initramfs_files/res/customconfig/customconfig.xml#L33