diff options
| author | Tony Lindgren <tony@atomide.com> | 2017-05-03 17:15:30 -0700 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2017-05-04 17:51:44 +0200 |
| commit | 3ae5f06681fc0e9ce6a0ac4f909aa7695e1f3228 (patch) | |
| tree | 46e84f95bd42348a8c62bb79f7dbc7b771736077 /drivers/power | |
| parent | 4f700a5285dc8f9dde4ad02542bc42fe9f97cfcf (diff) | |
| download | linux-3ae5f06681fc0e9ce6a0ac4f909aa7695e1f3228.tar.bz2 | |
power: supply: cpcap-charger: Fix charge voltage configuration
We have the charge voltage wrong, it should be 4.35V instead of 4.2V.
This will cause the battery to never get fully charged.
I noticed this when looking at the Andoid kernel battery and charger
status for a fully charged battery:
POWER_SUPPLY_VOLTAGE_NOW=4351000
Also the battery on droid 4 says "4.35, 1735/1785mAh (min/typ),
6.6/6.8 Wh (min/typ)". Presumably the 4.35 on the battery is the
charge voltage.
And finally, on Android the CPCAP CRM register is set to 0x03b5 where
the b is the charge voltage.
Let's fix the charge voltage define and update the charge configuration
to use the 4.35V setting.
Fixes: 0c9888e3c192 ("power: supply: cpcap-charger: Add minimal
CPCAP PMIC battery charger")
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/cpcap-charger.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c index 17907fcaebc3..33ca1174070b 100644 --- a/drivers/power/supply/cpcap-charger.c +++ b/drivers/power/supply/cpcap-charger.c @@ -76,7 +76,7 @@ #define CPCAP_REG_CRM_VCHRG_4V30 CPCAP_REG_CRM_VCHRG(0x8) #define CPCAP_REG_CRM_VCHRG_4V32 CPCAP_REG_CRM_VCHRG(0x9) #define CPCAP_REG_CRM_VCHRG_4V34 CPCAP_REG_CRM_VCHRG(0xa) -#define CPCAP_REG_CRM_VCHRG_4V36 CPCAP_REG_CRM_VCHRG(0xb) +#define CPCAP_REG_CRM_VCHRG_4V35 CPCAP_REG_CRM_VCHRG(0xb) #define CPCAP_REG_CRM_VCHRG_4V38 CPCAP_REG_CRM_VCHRG(0xc) #define CPCAP_REG_CRM_VCHRG_4V40 CPCAP_REG_CRM_VCHRG(0xd) #define CPCAP_REG_CRM_VCHRG_4V42 CPCAP_REG_CRM_VCHRG(0xe) @@ -433,7 +433,7 @@ static void cpcap_usb_detect(struct work_struct *work) max_current = CPCAP_REG_CRM_ICHRG_0A528; error = cpcap_charger_set_state(ddata, - CPCAP_REG_CRM_VCHRG_4V20, + CPCAP_REG_CRM_VCHRG_4V35, max_current, CPCAP_REG_CRM_TR_0A72); if (error) |