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atlas: keep discharged battery powered during precharge

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when we wake up a discharged battery using the "precharge current", it
briefly requests requests (0 vols, 0 amps) - presumably while its
controller is trying to figure out what's going on...  we respect this
and stop charging, but that's probably a really bad idea since the
battery has had very little chance to accept enough charge to
self-power its controller.  enabling "REQUESTS_NIL_WHEN_DEAD" gets
around that.

BUG=b:79354967
BRANCH=none
TEST=instrumented code to verify we override the 0 amps request when
battery is at 0% charge

Change-Id: I1e15e5106ae5cdda94bd1bfd02132b300c9c4665
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1067010
Commit-Ready: Caveh Jalali <caveh@google.com>
Tested-by: Caveh Jalali <caveh@google.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This commit is contained in:
Caveh Jalali
2018-05-18 14:59:56 -07:00
committed by chrome-bot
parent 2eb29bb25f
commit c1f1c4c282
1 changed files with 2 additions and 0 deletions
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2
board/atlas/board.h
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@@ -76,6 +76,8 @@
#define CONFIG_BATTERY_HW_PRESENT_CUSTOM
#define CONFIG_BATTERY_PRESENT_CUSTOM
#define CONFIG_BATTERY_SMART
/* battery briefly requests V=0, A=0 when woken up */
#define CONFIG_BATTERY_REQUESTS_NIL_WHEN_DEAD
/* Charger */
#define CONFIG_CHARGE_MANAGER