cpufreq values displayed 20% high on Intel J1900 BayTrail CPU

Hi there,

The J1900 CPU:
<http://ark.intel.com/products/78867/Intel-Celeron-Processor-J1900-2M-Cache-up-to-2_42-GHz>

is supposed to run at 1.33, 1.99 and 2.42 GHz for idle, normal, and boost.

Instead we have:

~$ uname -a
Linux itxmini 3.16.2a #14 SMP Sun Sep 14 11:06:35 EST 2014 x86_64 Intel(R) Celeron(R) CPU  J1900  @ 1.99GHz GenuineIntel GNU/Linux

~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 0.97 ms.
  hardware limits: 1.60 GHz - 2.90 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 1.60 GHz and 2.90 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
analyzing CPU 1:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 1
  CPUs which need to have their frequency coordinated by software: 1
  maximum transition latency: 0.97 ms.
  hardware limits: 1.60 GHz - 2.90 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 1.60 GHz and 2.90 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
analyzing CPU 2:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 2
  CPUs which need to have their frequency coordinated by software: 2
  maximum transition latency: 0.97 ms.
  hardware limits: 1.60 GHz - 2.90 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 1.60 GHz and 2.90 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
analyzing CPU 3:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 3
  CPUs which need to have their frequency coordinated by software: 3
  maximum transition latency: 0.97 ms.
  hardware limits: 1.60 GHz - 2.90 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 1.60 GHz and 2.90 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.

Where do I go (which file/s) to fix this?

More info:
.config: <http://bugsplatter.id.au/kernel/boxen/itxmini/config-3.16.2a.gz>
dmesg: <http://bugsplatter.id.au/kernel/boxen/itxmini/dmesg-3.16.2a.gz>

Thanks,
Grant.