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rtc: support for the Amlogic on-chip RTC

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This is the third amlogic driver. The RTC hardware of A4 SoC is different
from the previous one. This RTC hardware includes a timing function and
an alarm function. But the existing has only timing function, alarm
function is using the system clock to implement a virtual alarm. Add
the RTC driver to support it.

Signed-off-by: Yiting Deng <yiting.deng@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://lore.kernel.org/r/20241112-rtc-v6-2-a71b60d2f354@amlogic.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Yiting Deng
2024-11-12 11:10:15 +08:00
committed by Alexandre Belloni
parent ce57cf7319
commit c89ac9182e
3 changed files with 487 additions and 0 deletions
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drivers/rtc/Kconfig
+12
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@@ -2091,4 +2091,16 @@ config RTC_DRV_SSD202D
This driver can also be built as a module, if so, the module
will be called "rtc-ssd20xd".
config RTC_DRV_AMLOGIC_A4
tristate "Amlogic RTC"
depends on ARCH_MESON || COMPILE_TEST
select REGMAP_MMIO
default y
help
If you say yes here you get support for the RTC block on the
Amlogic A113L2(A4) and A113X2(A5) SoCs.
This driver can also be built as a module. If so, the module
will be called "rtc-amlogic-a4".
endif # RTC_CLASS