Hi,
Here is a driver for the RTC found inside of the
Motorola Droid 4 based on linux-next 2017021.
I tried to set & get the time using hwclock and
used ./tools/testing/selftests/timers/rtctest.c:
$ ./rtctest
RTC Driver Test Example.
Counting 5 update (1/sec) interrupts from reading /dev/rtc0: 1 2 3 4 5
Again, from using select(2) on /dev/rtc: 1 2 3 4 5
Current RTC date/time is 20-2-2017, 07:11:22.
Alarm time now set to 07:11:27.
Waiting 5 seconds for alarm... okay. Alarm rang.
Periodic IRQ rate is 1Hz.
Counting 20 interrupts at:
2Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
4Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
8Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
16Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
32Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
64Hz: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
*** Test complete ***
I did not include a patch for omap4-droid4-xt894.dts,
since the CPCAP DT entry has not yet been added. The
following DT snippet can be used for testing on droid4:
&cpcap {
cpcap_rtc: rtc {
compatible = "motorola,cpcap-rtc";
interrupt-parent = <&cpcap>;
interrupts = <39 IRQ_TYPE_NONE>, <26 IRQ_TYPE_NONE>;
};
};
-- Sebastian
Sebastian Reichel (1):
rtc: cpcap: new rtc driver
.../devicetree/bindings/rtc/cpcap-rtc.txt | 13 +
drivers/rtc/Kconfig | 7 +
drivers/rtc/Makefile | 1 +
drivers/rtc/rtc-cpcap.c | 318 +++++++++++++++++++++
4 files changed, 339 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/cpcap-rtc.txt
create mode 100644 drivers/rtc/rtc-cpcap.c
--
2.11.0
