tilal6991/kernel_zte_blade — comment on commit 531b97b95c06882326d2404377b120ace74a5f77
File:  line 0
By John-Kenney:

Can undervolt lower speeds too, this is what I've got,

{ 1, 122880, ACPU_PLL_1, 1, 1, 61440, 1, 0, 61440 },
{ 1, 200000, ACPU_PLL_2, 2, 5, 66667, 2, 1, 61440 },
{ 1, 245760, ACPU_PLL_1, 1, 0, 122880, 1, 2, 61440 },
{ 1, 320000, ACPU_PLL_0, 4, 2, 160000, 1, 3, 122880 },
{ 1, 480000, ACPU_PLL_0, 4, 1, 240000, 1, 5, 240000 },

Best to test the overclocking first & make sure there's no instability caused by that. Second to last number on each row is the voltage, set levels from 0-7.