drivers: counter: stm32: remove deprecated clock source Kconfigs

These clock selection Kconfigs should have been deprecated for
more than 2 releases, remove them:

- `CONFIG_COUNTER_RTC_STM32_CLOCK_SRC`
- `CONFIG_COUNTER_RTC_STM32_CLOCK_LSI`
- `CONFIG_COUNTER_RTC_STM32_CLOCK_LSE`

Signed-off-by: Yong Cong Sin <ycsin@meta.com>

drivers/counter/Kconfig.stm32_rtc

@@ -17,27 +17,6 @@ menuconfig COUNTER_RTC_STM32
 
 if COUNTER_RTC_STM32
 
-choice COUNTER_RTC_STM32_CLOCK_SRC
-	bool "RTC clock source"
-	optional
-	depends on COUNTER_RTC_STM32
-
-config COUNTER_RTC_STM32_CLOCK_LSI
-	bool "LSI"
-	select DEPRECATED
-	help
-	  Use LSI as RTC clock
-	  Deprecated in favor of device tree secondary domain clock
-
-config COUNTER_RTC_STM32_CLOCK_LSE
-	bool "LSE"
-	select DEPRECATED
-	help
-	  Use LSE as RTC clock
-	  Deprecated in favor of device tree secondary domain clock
-
-endchoice #COUNTER_RTC_STM32_CLOCK_SRC
-
 config COUNTER_RTC_STM32_SAVE_VALUE_BETWEEN_RESETS
 	bool "Save rtc time value between resets"
 	default n

drivers/counter/counter_ll_stm32_rtc.c

@@ -621,21 +621,7 @@ static int rtc_stm32_init(const struct device *dev)
 
 static struct rtc_stm32_data rtc_data;
 
-#if DT_INST_NUM_CLOCKS(0) == 1
-#warning STM32 RTC needs a kernel source clock. Please define it in dts file
-static const struct stm32_pclken rtc_clk[] = {
-	STM32_CLOCK_INFO(0, DT_DRV_INST(0)),
-	/* Use Kconfig to configure source clocks fields (Deprecated) */
-	/* Fortunately, values are consistent across enabled series */
-#ifdef CONFIG_COUNTER_RTC_STM32_CLOCK_LSE
-	{.bus = STM32_SRC_LSE, .enr = RTC_SEL(1)}
-#else
-	{.bus = STM32_SRC_LSI, .enr = RTC_SEL(2)}
-#endif
-};
-#else
 static const struct stm32_pclken rtc_clk[] = STM32_DT_INST_CLOCKS(0);
-#endif
 
 static const struct rtc_stm32_config rtc_config = {
 	.counter_info = {

scripts/ci/check_compliance.py

@@ -873,7 +873,6 @@ flagged.
         "COMPILER_RT_RTLIB",
         "BT_6LOWPAN",  # Defined in Linux, mentioned in docs
         "CMD_CACHE",  # Defined in U-Boot, mentioned in docs
-        "COUNTER_RTC_STM32_CLOCK_SRC",
         "CRC",  # Used in TI CC13x2 / CC26x2 SDK comment
         "DEEP_SLEEP",  # #defined by RV32M1 in ext/
         "DESCRIPTION",