[Trusty Patch] intel_pstate: Add setting voltage value for baytrail P states

[Zhao, Yingying]

https://bugs.launchpad.net/intel/+bug/1270736

The patch fixes a boot failure on Intel BayTrail-M platform with intel_pstate enabled:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=007bea098b869945a462420a1f9d442ff169f722

intel_pstate: Add setting voltage value for baytrail P states.

Baytrail requires setting P state and voltage pairs when adjusting the
requested P state. Add function for retrieving the valid voltage
values and modify *_set_pstate() functions to caluclate the
appropriate voltage for the requested P state.

Signed-off-by: Dirk Brandewie <dirk.j.brandewie at intel.com>
Signed-off-by: Rafael J. Wysocki rafael.j.wysocki at intel.com<mailto:rafael.j.wysocki at intel.com>



The patch is queued for 3.14-rc1 and marked for 3.13 stable.



Yingying

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