The RV8901 RTC chip provides a function to store timestamp events. There are three input pins (EVIN1-3) available for triggering. The timestamp can be read to detect tamper alerts, for example. This patch series extends the sysfs interface to enable, configure, and read the timestamp events. Currently the configuration is implemented in sysfs. Maybe this could be moved into device-tree, since pull-resistor, edge and timing is more hardware dependent. The data-sheet can be found here: https://download.epsondevice.com/td/pdf/brief/RX8901CE_en.pdf This patch-queue applies to 'linux-6.13~rc6' Markus Burri (7): dt-bindings: rtc: add new type for epson,rx8901 rtc-rv8803: add new type for rv8901 rtc-rv8803: add register definitions for rv8901 tamper detection rtc-rv8803: add tamper function to sysfs for rv8901 rtc-rv8803: extend sysfs to trigger internal ts-event rtc-rv8803: make tamper function configurable via sysfs rtc-rv8803: extend sysfs to read ts-event and buffer status .../devicetree/bindings/rtc/epson,rx8900.yaml | 2 + drivers/rtc/rtc-rv8803.c | 778 +++++++++++++++++- 2 files changed, 778 insertions(+), 2 deletions(-) -- 2.39.5
