This patches series adds a new driver for the RTC found in the Mstar SSD202D SoCs. It adds a basic rtc driver, the corresponding devicetree bindings. The rtctest (from selftests) has been passed on this driver, with the following output: # rtctest TAP version 13 1..8 # Starting 8 tests from 1 test cases. # RUN rtc.date_read ... # rtctest.c:52:date_read:Current RTC date/time is 17/05/2023 15:58:12. # OK rtc.date_read ok 1 rtc.date_read # RUN rtc.date_read_loop ... # rtctest.c:95:date_read_loop:Continuously reading RTC time for 30s (with 11ms breaks after every read). # rtctest.c:122:date_read_loop:Performed 888 RTC time reads. # OK rtc.date_read_loop ok 2 rtc.date_read_loop # RUN rtc.uie_read ... # rtctest.c:137:uie_read:skip update IRQs not supported. # OK rtc.uie_read ok 3 rtc.uie_read # RUN rtc.uie_select ... # rtctest.c:166:uie_select:skip update IRQs not supported. # OK rtc.uie_select ok 4 rtc.uie_select # RUN rtc.alarm_alm_set ... # rtctest.c:214:alarm_alm_set:skip alarms are not supported. # OK rtc.alarm_alm_set ok 5 rtc.alarm_alm_set # RUN rtc.alarm_wkalm_set ... # rtctest.c:274:alarm_wkalm_set:skip alarms are not supported. # OK rtc.alarm_wkalm_set ok 6 rtc.alarm_wkalm_set # RUN rtc.alarm_alm_set_minute ... # rtctest.c:324:alarm_alm_set_minute:skip alarms are not supported. # OK rtc.alarm_alm_set_minute ok 7 rtc.alarm_alm_set_minute # RUN rtc.alarm_wkalm_set_minute ... # rtctest.c:384:alarm_wkalm_set_minute:skip alarms are not supported. # OK rtc.alarm_wkalm_set_minute ok 8 rtc.alarm_wkalm_set_minute # PASSED: 8 / 8 tests passed. # Totals: pass:8 fail:0 xfail:0 xpass:0 skip:0 error:0 Changes since v1: - Changed the compatible from mstar,ssd20xd-rtc to mstar,ssd20d-rtc. So the driver, its documentation and the commit messages have been reworked accordingly. - Re-worked the dt-binding, I have also simplified the commit message - Re-worked the commit message for the driver - Remove redundant logging message for the user in the driver, as requested by the subsystem maintainer. As these messages are helpful for debugging purpose, I have switched these to dev_dbg(). - Updated the list of maintainers (sorry for that). Romain Perier (3): rtc: Add support for the SSD202D RTC dt-bindings: rtc: Add Mstar SSD202D RTC ARM: dts: mstar: Enable rtc for SSD202D .../bindings/rtc/mstar,ssd202d-rtc.yaml | 35 +++ .../boot/dts/sigmastar/mstar-infinity2m.dtsi | 5 + drivers/rtc/Kconfig | 11 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ssd202d.c | 249 ++++++++++++++++++ 5 files changed, 301 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/mstar,ssd202d-rtc.yaml create mode 100644 drivers/rtc/rtc-ssd202d.c -- 2.39.2
