diff options
| author | Aseda Aboagye <aaboagye@google.com> | 2021-04-23 15:07:25 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-04-27 22:54:53 +0000 |
| commit | 73886cddb0eb255072848e2d071707976729be03 (patch) | |
| tree | 006e2e0520a318db5485df3dc82bcba558dd9ae6 /driver | |
| parent | da02ed5aace26a2abe545daaede8a18a100cc197 (diff) | |
| download | chrome-ec-73886cddb0eb255072848e2d071707976729be03.tar.gz | |
raa489000: Disable DVC in hibernate
Leaving DVC enabled on the primary charger in hibernate will increase
the power consumption of the system. When we enter hibernate, DVC
isn't needed so we can safely disable it.
BUG=b:184219851
BRANCH=dedede
TEST=Build and flash madoo, verify that DUT is able to hibernate and
can charge from sub board when woken up.
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Change-Id: I027cceac0cb7eff9ac08293449a06712e9d1daaf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2848292
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Auto-Submit: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Commit-Queue: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/charger/isl923x.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/driver/charger/isl923x.c b/driver/charger/isl923x.c index d9a6713a56..b918cec8a4 100644 --- a/driver/charger/isl923x.c +++ b/driver/charger/isl923x.c @@ -887,6 +887,14 @@ void raa489000_hibernate(int chgnum, bool disable_adc) CPRINTS("%s(%d):Failed to set Control8!", __func__, chgnum); } + + /* Disable DVC on the main charger to reduce power consumption. */ + if (chgnum == CHARGER_PRIMARY) { + rv = raw_write16(chgnum, RAA489000_REG_CONTROL10, 0); + if (rv) + CPRINTS("%s(%d):Failed to set Control10!", __func__, + chgnum); + } #endif cflush(); |