The Ricoh R2223x is an I2C RTC from the same family as the r2025sd and
r2221tl which the rtc-rs5c372 already supports. It shares the R2x2x
control register layout, so only the new type must be added to the driver.

The ricoh R2223x drives a clock output and offers an eco mode that
lowers its current consumption while running from the backup supply.

The trivial-rtc binding does not cover this, so give the device its
own binding in patch 1. Patch 2 adds the R2223x to the rs5c372 rtc
driver, and patch 3 implements the eco-mode enable setting.



Heiko Schocher (3):
  dt-bindings: rtc: add ricoh,r2223x binding
  rtc: rs5c372: add support for Ricoh R2223x
  rtc: rs5c372: support eco mode on R2223x

 .../devicetree/bindings/rtc/ricoh,r2223x.yaml | 58 +++++++++++++++++++
 drivers/rtc/rtc-rs5c372.c                     | 41 ++++++++++++-
 2 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/ricoh,r2223x.yaml

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base-commit: 2709dd5ae32f0828f386327c76bba9f39f63a1c6

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2.55.0