[Dynamicpower-devel] OMAP jiffies scale issue

[Vladimir A. B. <vba...@ru...>]

Hi Todd,

This is a patch for loops_per_jiffie issue in OMAP DPM.
The loops_per_jiffie are not correctly calculated by omap-dpm driver so 
the BogoMIPS in /proc/cpuinfo are always 0.

That was due to the dpll_rate exponent is Hz and other values are MHz.
The cpu_rate then is recalculated using dpll_rate so the 
old_cpu_freq/new_cpu_freq ~ MHz and the jiffies scale calculation fails 
in dpm_compute_lpj(old_cpu_rate, new_cpu_rate).
I decided to scale all clk_rates to MHz, because the dpm_compute_lpj() 
cann't operate with high values.
I removed old get_dpll_rate() to the new scheme (in order to mostly 
conform with new clock.c) and added get_ckref_rate() instead of old 
source_clock.

Also I made workaround to the issue of VCORE voltage scaling - the DPLL 
cann't be changed with LOW VCORE on OMAP1710H3 (I used the dpm setup 
script and then consequently changed polycies).

Vladimir