The EPSON RX-8035[SA] is a I2C real time clock module with built-in oscillator[1]. It is a very close relative of the EPSON RX-8025 that is supported by the rtc-rx8025 driver. The main difference is that the RX-8035 has inverted the 'oscillator stop' bit in the control register. The operation of the devices is otherwise identical for the features currently supported. Curiously, the RX-8025 is also supported by the ds1307 driver as the time register set is compatible. The control registers, however, are not. I have decided to implement the RX-8035 in rtc-rx8025 due the simplicity of that driver. As best as I can determine, the rtc-rx8025 driver was in the tree some months[1] before rx8025 support was added to ds1307[2]. [1] - https://www5.epsondevice.com/en/products/rtc/rx8035sa.html [2] - commit 3c2b9075cbdb541dbe486bde45925c9610de6f35 [3] - commit a216685818a54b4f15235068b53908f954850251 Changes in v2: Coding style fixes as per suggestions Use 'model' instead of 'type' in drvdata Call rx8025_is_osc_stopped in a consistent manner Mathew McBride (2): rtc: rx8025: implement RX-8035 support dt-bindings: rtc: add Epson RX-8025 and RX-8035 .../devicetree/bindings/rtc/trivial-rtc.yaml | 3 + drivers/rtc/rtc-rx8025.c | 59 +++++++++++++++++-- 2 files changed, 57 insertions(+), 5 deletions(-) -- 2.30.1
