[0/3] Add RTC for MStar SSD20xD SoCs

Message

Romain Perier May 17, 2023, 2:41 p.m. UTC

This patches series adds a new driver for the RTC found in the Mstar
SSD20xD SoCs. It adds a basic rtc driver, the corresponding devicetree
bindings and its documentation.

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


Romain Perier (3):
  rtc: Add support for the SSD20xD RTC
  dt-bindings: rtc: Add Mstar SSD20xD RTC devicetree bindings
    documentation
  ARM: dts: mstar: Enable rtc for SSD20xD

 .../bindings/rtc/mstar,ssd20xd-rtc.yaml       |  37 +++
 arch/arm/boot/dts/mstar-infinity2m.dtsi       |   5 +
 drivers/rtc/Kconfig                           |  11 +
 drivers/rtc/Makefile                          |   1 +
 drivers/rtc/rtc-ssd20xd.c                     | 249 ++++++++++++++++++
 5 files changed, 303 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/mstar,ssd20xd-rtc.yaml
 create mode 100644 drivers/rtc/rtc-ssd20xd.c