Support Nuvoton NCT3018Y real time clock. Changes since version 5: - Add battery voltage level check by NCT3018Y_REG_ST. - Remove disable clock output. - Fix errors in rtc-nct3018y.c. Changes since version 4: - Fix warnings in rtc-nct3018y.c. - Reduce the number of error messages. - Add time vaild check. - Add functionality check. - Add maintainer. Changes since version 3: - Add part number in Kconfig. - Refactor rtc-nct3018y.c. Changes since version 2: - Fix errors in rtc-nct3018y.c. - Fix warnings in rtc-nct3018y.c. Changes since version 1: - Add nuvoton,nct3018y property in NPCM devicetree. - Add new property in rtc binding document. - Add new driver for nuvoton real time clock driver. Mia Lin (3): dt-bindings: rtc: nuvoton: add NCT3018Y Real Time Clock ARM: dts: nuvoton: Add nuvoton RTC3018Y node RTC: nuvoton: Add NCT3018Y real time clock driver .../bindings/rtc/nuvoton,nct3018y.yaml | 45 ++ MAINTAINERS | 2 + arch/arm/boot/dts/nuvoton-npcm750-evb.dts | 4 + drivers/rtc/Kconfig | 10 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-nct3018y.c | 553 ++++++++++++++++++ 6 files changed, 615 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml create mode 100644 drivers/rtc/rtc-nct3018y.c -- 2.17.1