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cea3f26d5d
Change charge_state_v2 to set the maximum input current limit when there is no battery present AND the system is not locked. This allows us to boot without a battery. Note that using the max input current limit may cause us to overcurrent our charger, but that's no worse than putting a limit on it and having the system brownout. Either way you must have a high enough power charger to boot without a battery. BUG=chrome-os-partner:35570 BRANCH=samus TEST=load on samus, remove battery and plug in zinger. check "charger" has input current limit of 8128mA, and on PD MCU jump back and forth between RO and RW and make sure system doesn't power off. Note that without this CL, if you sysjump on the PD MCU it causes input current limit to reset to 500mA and causes AP to shutoff. Change-Id: Ie13d97a6b5c0937510cff0cf05fb032898c3b131 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/241762 Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit