* Pavel Machek <pavel@xxxxxx> [180502 19:12]: > Hi! > > > > Anyway, >5.5hours of standby with screen off, GSM on is already > > > usable. > > > > Just to rub that in, you do mean GSM usable for voice calls and > > SMS with your unicsy_demo with mainline kernel plus the pending > > LCD related patches, right? :) > > Plus some other patches, yes. Cool :) > > It comes from the shunt resistor measured by the PMIC. Sorry I don't > > remember how often it needs to be polled but I'm guessing polling it > > once a minute or so should be plenty. > > Ok. I normally do once in 30 seconds. > > > Hmm oh and the POWER_SUPPLY_CHARGE_COUNTER value should be monitored > > by your libbattery and it's low value and high value should be saved > > to a file. Low should be saved when we get the battery low interrupt > > and battery state changes to POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL. > > High value should be saved on POWER_SUPPLY_CAPACITY_LEVEL_FULL. > > > > Then when you know the high value and low value, you can calculate > > the remaining capacity based on the current value and > > POWER_SUPPLY_POWER_AVG. > > Ok, more stuff on TODO list. I actually use python hacks, and not > libbattery now. > > Is this one correct? > > voltage_min_design:3100000 Yes I think that's the voltage we get battery empty interrupt and cpcap_battery_irq_thread() calls orderly_poweroff() shuts down the device. > I believe you mentioned flash stops working at 3.3V. What is important > from my point of view is to shut the system down when the battery is > low. I believe that still needs to be implemented. The 3.3V case was for a different device, so the minimum level can board specific and less than what the battery thinks it might be. > Is it appropriate to shutdown at POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL? > But then libbattery will race with shutdown to save the thresholds... No need to do anything except notify user at the battery low interrupt CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW :) > I also have some hacks to allow configuration of the full > voltage. Charging to 4.35V is pretty agressive, and I believe baterry > will be damaged less if we only charge to 4.1V. That should be based on the PMIC register values that Android uses. Worth rechecking for sure, I thought it is higher than normal too for the charge voltage. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
