Performance governor does not set cpu clock to maximum

[confucij]

Hi all!
I have olimex-A20SOM on custom board with Debian 8 running sunxi-3.4 kernel.
During kernel compilation I have set default governor to performance. But CPU`s frequency sets only to 912MHz though maximum is 1008 (
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq shows "1008000").
Setting /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq to 1008000 switch frequency to 1008. But I want it to be 1008 without any manual intervention and without instalation of cpufreq.
This is the clock related part of fex file.

[target]
boot_clock = 1008
dcdc2_vol = 1425
dcdc3_vol = 1300
ldo2_vol = 3000
ldo3_vol = 2800
ldo4_vol = 2800
power_start = 0
storage_type = 0

[clock]
pll3 = 297
pll4 = 300
pll6 = 600
pll7 = 297
pll8 = 336


Can someone point me on how to do this?