Today denverton_core_init() is enabling the Intel SpeedStep only if turbo mode is available. As a result, the SpeedStep is not enable for the C3558 variant (and others).  Any clues of why it was implemented this way?

I think it is safe to remove the "if (get_turbo_state() == TURBO_ENABLED)" test and always enable the SpeedStep technology.

Thanks,

Sumo