From f1e3784b9db890c9ee6f9dc09973e9e6dfa49608 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Ju=C5=99ena?= <jurenatomas@gmail.com>
Date: Tue, 1 Apr 2025 22:32:04 +0200
Subject: [PATCH] soc: st: stm32: poweroff uses stm32_wkup_pins
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Update the poweroff code to use stm32_pwr_wkup_pin_cfg_pupd if enabled.

Signed-off-by: Tomáš Juřena <jurenatomas@gmail.com>
---
 soc/st/stm32/stm32c0x/poweroff.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/soc/st/stm32/stm32c0x/poweroff.c b/soc/st/stm32/stm32c0x/poweroff.c
index c9c4db49e9d..ec07aaf81bf 100644
--- a/soc/st/stm32/stm32c0x/poweroff.c
+++ b/soc/st/stm32/stm32c0x/poweroff.c
@@ -1,19 +1,30 @@
 /*
  * Copyright (c) 2024 Kickmaker
+ * Copyright (c) 2025 Tomas Jurena
+ *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include <zephyr/kernel.h>
 #include <zephyr/sys/poweroff.h>
 #include <zephyr/toolchain.h>
+#include <zephyr/drivers/misc/stm32_wkup_pins/stm32_wkup_pins.h>
 
 #include <stm32_ll_cortex.h>
 #include <stm32_ll_pwr.h>
+#include <stm32_ll_system.h>
 
 void z_sys_poweroff(void)
 {
+#ifdef CONFIG_STM32_WKUP_PINS
+	stm32_pwr_wkup_pin_cfg_pupd();
+
+	LL_PWR_ClearFlag_WU();
+#endif /* CONFIG_STM32_WKUP_PINS */
+
 	LL_PWR_SetPowerMode(LL_PWR_MODE_SHUTDOWN);
 	LL_LPM_EnableDeepSleep();
+	LL_DBGMCU_DisableDBGStandbyMode();
 
 	k_cpu_idle();