tree faafc0a6e0bc2e1a6f63227ebc9ec1bb3d875cd5
parent 912ebcd33ca296407656c176ee13027dba900334
author Channagoud Kadabi <ckadabi@codeaurora.org> 1442611153 -0700
committer Channagoud Kadabi <ckadabi@codeaurora.org> 1443120153 -0700

dev: pmi8994: Add support to read battery voltage from sram

FG_ADC voltages are off by ~120 to 200mv, if the device is booted up
with 3.7v battery due to this inaccuracy the voltage is read as < 3.6
which is less than the threshold value in lk and results in LK trying
to charge the battery. Since this is a fake battery the charging never
completes and device loops forever. To avoid these issues read the
voltage from SRAM shadow registers that provide more accurate value
when compared to FG_ADC.

Change-Id: I05dfb5073af28f5925b92cdc250f52082f2629a4