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BD99955: Change the minimum charging current value

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If the battery is not yet ready to provide the power or battery is
not present and the charging current is set to 64mA then the charger
voltage regulation is transient. ROHM recommended 512mA of minimum
charging current for this issue, hence changed the minimum charging
current from 64mA to 512mA.

BUG=chrome-os-partner:54821
BRANCH=none
TEST=Manually tested on Amenia.
     a. Until the battery is initialized from cut-off mode, charging
        voltage doesn't drop below battery voltage max.
     b. With 15W charger (5V, 3A) without the battery, charger voltage
        is regulated to battery voltage max.

Change-Id: I44172d4e9152b699976137bf070d618097c8cef7
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/356570
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Vijay Hiremath
2016-06-27 17:45:07 -07:00
committed by chrome-bot
parent 7f67d27a53
commit 4cdd14d07b
1 changed files with 1 additions and 1 deletions
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2
driver/charger/bd99955.h
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@@ -32,7 +32,7 @@ enum bd99955_charge_port {
#define CHARGE_V_MIN 3072
#define CHARGE_V_STEP 16
#define CHARGE_I_MAX 16320
#define CHARGE_I_MIN 64
#define CHARGE_I_MIN 512
#define CHARGE_I_OFF 0
#define CHARGE_I_STEP 64
#define INPUT_I_MAX 16352