What would you recommend for checking the device health during testing, i.e. battery voltage/current(in/out)/temperature, VBUS level, etc. What are some interesting procfs/sysfs files to monitor? Are there any important I2C registers to monitor? From the bq24150 (0x6b) or other I2C devices? To which degree is debugfs and usbmon working in titans new kernel? Any (special) setup needed? (except mounting debugfs and modprobing usbmon) Are there datasheets for the TWL4030 and the 1707 (could only find one for TPS65950 which is apparently similar (?) to the TWL) And finally: do you know a (working) way to save/restore the whole filesystem in case anything goes wrong?