From: "Ying-Chun Liu (PaulLiu)" paul.liu@linaro.org
This is a basic driver for the ultra-low-power Abracon AB x80x series of RTC chips. It supports in particular, the supersets AB0805 and AB1805. It allows reading and writing the time, and enables the supercapacitor or battery charger.
Ying-Chun Liu (PaulLiu) (2): rtc: add rtc-abx80x, a driver for the Abracon AB x80x i2c rtc doc: device-tree-bindings: rtc: Abracon AB x80x i2c rtc
.../rtc/abracon,abx80x.txt | 31 + drivers/rtc/Kconfig | 9 + drivers/rtc/Makefile | 1 + drivers/rtc/abx80x.c | 555 ++++++++++++++++++ 4 files changed, 596 insertions(+) create mode 100644 doc/device-tree-bindings/rtc/abracon,abx80x.txt create mode 100644 drivers/rtc/abx80x.c