drivers: rtc: add RV3028 RTC driver

Adds support for the Micro Crystal RV3028 RTC connected to the I2C bus.

Signed-off-by: Jakub Topic <jakub.topic@anitra.cz>

Author: jakubtopic

drivers/rtc/CMakeLists.txt

@@ -20,4 +20,5 @@ zephyr_library_sources_ifdef(CONFIG_RTC_FAKE rtc_fake.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_SMARTBOND rtc_smartbond.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_ATMEL_SAM rtc_sam.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_RPI_PICO rtc_rpi_pico.c)
+zephyr_library_sources_ifdef(CONFIG_RTC_RV3028 rtc_rv3028.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_NUMAKER rtc_numaker.c)

drivers/rtc/Kconfig

@@ -49,6 +49,7 @@ source "drivers/rtc/Kconfig.mc146818"
 source "drivers/rtc/Kconfig.pcf8523"
 source "drivers/rtc/Kconfig.pcf8563"
 source "drivers/rtc/Kconfig.rpi_pico"
+source "drivers/rtc/Kconfig.rv3028"
 source "drivers/rtc/Kconfig.sam"
 source "drivers/rtc/Kconfig.smartbond"
 source "drivers/rtc/Kconfig.stm32"

drivers/rtc/Kconfig.rv3028

@@ -0,0 +1,10 @@
+# Copyright (c) 2024 ANITRA system s.r.o.
+# SPDX-License-Identifier: Apache-2.0
+
+config RTC_RV3028
+	bool "Micro Crystal RV3028 I2C extreme low power RTC driver"
+	default y
+	depends on DT_HAS_MICROCRYSTAL_RV3028_ENABLED
+	select I2C
+	help
+	  Enable the Micro Crystal RV3028 I2C RTC driver.