On Tue 2019-09-17 14:34:59, Tony Lindgren wrote: > From: Pavel Machek <pavel@xxxxxx> > > There have been some cases of droid4 battery bulging that seem to > be related to being left connected to the charger for several weeks. > > It is suspected that the 4.35V charge voltage configured for the battery > is too much in the long run, so lets limit the charge voltage to 4.2V. 4.35V is known to make lifetime of battery shorter, but it provides 10% more capacity. Disadvantage of this approach is that if droid is rebooted between mainline and android, battery will go 4.35V->4.2V->4.35V... while on charger. I guess this patch still makes sense, I just wanted to make sure disadvantages are mentioned. Best regards, Pavel > @@ -457,7 +457,7 @@ static void cpcap_usb_detect(struct work_struct *work) > max_current = CPCAP_REG_CRM_ICHRG_0A532; > > error = cpcap_charger_set_state(ddata, > - CPCAP_REG_CRM_VCHRG_4V35, > + CPCAP_REG_CRM_VCHRG_4V20, > max_current, 0); > if (error) > goto out_err; -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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