[PATCH v3 0/3] Add support for Nuvoton ma35d1 rtc controller

[Jacky Huang]

From: Jacky Huang <ychuang3@xxxxxxxxxxx>

This patch series adds the rtc driver for the nuvoton ma35d1 ARMv8 SoC.
It includes DT binding documentation, the ma35d1 rtc driver, and device
tree updates.

The ma35d1 rtc controller provides real-time and calendar messaging
capabilities. It supports programmable time tick and alarm match
interrupts. The time and calendar messages are expressed in BCD format.

This rtc driver has been tested on the ma35d1 som board with Linux 6.5-rc2.
It passed the rtctest and rtc-range 2000 ~ 2099.

v3:
  - Update ma35d1 rtc driver
    - Renamed "TICKIEN" to "UIEN" as their functional equivalence.
    - Eliminated the usage of 'struct ma35_bcd_time' and associated
      ma35d1 bcd functions; instead, opted to directly utilize the
      "bin2bcd()" function
    - Employed "ma35d1_alarm_irq_enable()" to accommodate the
      "alrm->enabled" feature
    - Revised the probe sequence and implemented a check to verify if
      the rtc was initialized
    - Other minor fixes

v2:
  - Updated nuvoton,ma35d1-rtc.yaml
    - Modified patch title and fixed typo
    - Added reference to rtc.yaml
    - Used unevaluatedProperties instead of additionalProperties
  - Modified rtc driver
    - Used dev_err_probe()
    - Removed ma35d1_rtc_remove()
    - Made other minor fixes

Jacky Huang (3):
  dt-bindings: rtc: Add Nuvoton ma35d1 rtc
  arm64: dts: nuvoton: Add rtc for ma35d1
  rtc: Add driver for Nuvoton ma35d1 rtc controller

 .../bindings/rtc/nuvoton,ma35d1-rtc.yaml      |  48 +++
 .../boot/dts/nuvoton/ma35d1-iot-512m.dts      |   4 +
 .../boot/dts/nuvoton/ma35d1-som-256m.dts      |   4 +
 arch/arm64/boot/dts/nuvoton/ma35d1.dtsi       |   8 +
 drivers/rtc/Kconfig                           |  11 +
 drivers/rtc/Makefile                          |   1 +
 drivers/rtc/rtc-ma35d1.c                      | 324 ++++++++++++++++++
 7 files changed, 400 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/nuvoton,ma35d1-rtc.yaml
 create mode 100644 drivers/rtc/rtc-ma35d1.c

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2.34.1