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commit 4f23ec122b6f0316f75c46058ca0d6d28bb74e7f
Author: raiden00pl <[email protected]>
AuthorDate: Fri Oct 30 13:18:49 2026 +0100

    boards/nucleo-h7s3l8: Define the LPTIM kernel clocks.
    
    LPTIM1 runs on PCLK1 and LPTIM2-5 on PCLK4, the reset values of the
    RCC_CCIPR2 and RCC_CCIPR4 LPTIM source selections.
    
    Signed-off-by: raiden00pl <[email protected]>
    Assisted-by: Claude Code
---
 boards/arm/stm32h7/nucleo-h7s3l8/include/board.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/boards/arm/stm32h7/nucleo-h7s3l8/include/board.h 
b/boards/arm/stm32h7/nucleo-h7s3l8/include/board.h
index 87e3b12b387..5f7a2506be9 100644
--- a/boards/arm/stm32h7/nucleo-h7s3l8/include/board.h
+++ b/boards/arm/stm32h7/nucleo-h7s3l8/include/board.h
@@ -187,6 +187,16 @@
 #define STM32_TIM16_CLKIN        (2 * STM32_PCLK2_FREQUENCY)
 #define STM32_TIM17_CLKIN        (2 * STM32_PCLK2_FREQUENCY)
 
+/* LPTIM kernel clocks (RCC_CCIPR2 LPTIM1SEL and RCC_CCIPR4 LPTIM23SEL /
+ * LPTIM45SEL reset values): LPTIM1 on PCLK1, LPTIM2-5 on PCLK4
+ */
+
+#define STM32_LPTIM1_CLKIN       STM32_PCLK1_FREQUENCY
+#define STM32_LPTIM2_CLKIN       STM32_PCLK4_FREQUENCY
+#define STM32_LPTIM3_CLKIN       STM32_PCLK4_FREQUENCY
+#define STM32_LPTIM4_CLKIN       STM32_PCLK4_FREQUENCY
+#define STM32_LPTIM5_CLKIN       STM32_PCLK4_FREQUENCY
+
 /* FLASH wait states */
 
 #define BOARD_FLASH_WAITSTATES   7

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