[PATCH v3 0/8] rtc: isl12022: battery backup voltage and clock support

[Rasmus Villemoes]

The current handling of the low-battery bits in the status register is
wrong. The first six patches fix that and implement proper support for
RTC_VL_READ.

The last two patches allow describing the isl12022 as a clock
provider, for now just as a fixed 32kHz clock. They are also
tangentially related to the backup battery, in that when the isl12022
is not used as a clock source, one can save some power consumption in
battery mode by setting the FOx bits to 0.

v3 changes:

Patch 2: move the allOf block further down, add R-b [Krzysztof]

Patch 3: change to a single property with two values [Krzysztof]

Patch 4: adjust implementation accordingly

Patch 5: move initialization of 'user' variable inside switch case,
use 'if (ret)' instead of 'if (ret < 0)' for consistency within the
driver [Andy]

Patch 7: semantically identical to v2, just context changes due to
changes in 2/8 and 3/8

Patch 8: only do the clock registration when CONFIG_COMMON_CLK [kernel
test robot]

v2: https://lore.kernel.org/lkml/20230613130011.305589-1-linux@xxxxxxxxxxxxxxxxxx/
v1: https://lore.kernel.org/lkml/20230612113059.247275-1-linux@xxxxxxxxxxxxxxxxxx/

Rasmus Villemoes (8):
  rtc: isl12022: remove wrong warning for low battery level
  dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own
    schema file
  dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels
  rtc: isl12022: add support for trip level DT binding
  rtc: isl12022: implement RTC_VL_READ ioctl
  rtc: isl12022: trigger battery level detection during probe
  dt-bindings: rtc: isl12022: add #clock-cells property
  rtc: isl12022: implement support for the #clock-cells DT property

 .../bindings/rtc/intersil,isl12022.yaml       |  64 +++++++++
 .../devicetree/bindings/rtc/trivial-rtc.yaml  |   2 -
 drivers/rtc/rtc-isl12022.c                    | 126 +++++++++++++++++-
 3 files changed, 184 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/intersil,isl12022.yaml

-- 
2.37.2