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3392ad70d0
Enabled the trickle charging mode by setting the VPRECHG_TH_SET
register[0x18H] to board specific battery voltage minimum value.
When the battery voltage drops below the battery voltage minimum
value, trickle charging is enabled.
BUG=chrome-os-partner:56684
BRANCH=none
TEST=Manually verified on Reef. Drained the battery below battery
voltage minimum value. On plugging in the charger, State
Machine Status register CHGSTM_STATUS [0x00h] is 0x01 which
indicates, current state of the charger state-machine is in
Trickle-Charge condition.
Change-Id: Ic4b985c71ff68ea4f5ab22e18feab03d776ec134
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/376939
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly