Overclock s905x3 by set scaling_max_freq

[araczkowski]

Hi,
the temperature of the cpu in my box is about 50 °C
so I'm trying to overclock cpu(it looks like there is room for it), for this I navigate to:
/sys/devices/system/cpu/cpu0/cpufreq
I changed the scaling_max_freq to be writable
chmod +w scaling_max_freq
then I set the freq like this echo 2100000 > scaling_max_freq but it not working
@devmfc any ideas how to do this?
Thanks