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rtc: cros-ec: add cros-ec-rtc driver.

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On platforms with a Chrome OS EC, the EC can function as a simple RTC.
Add a basic driver with this functionality.

Signed-off-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Stephen Barber
2017-11-10 22:55:53 +01:00
committed by Alexandre Belloni
parent 3eff6d2cc9
commit 6f2a71a31a
3 changed files with 424 additions and 0 deletions
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10
drivers/rtc/Kconfig
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@@ -1255,6 +1255,16 @@ config RTC_DRV_ZYNQMP
If you say yes here you get support for the RTC controller found on
Xilinx Zynq Ultrascale+ MPSoC.
config RTC_DRV_CROS_EC
tristate "Chrome OS EC RTC driver"
depends on MFD_CROS_EC
help
If you say yes here you will get support for the
Chrome OS Embedded Controller's RTC.
This driver can also be built as a module. If so, the module
will be called rtc-cros-ec.
comment "on-CPU RTC drivers"
config RTC_DRV_ASM9260