From 1fdc4f08cb8e5f0935e3fcad482dbc9c97a8e2c6 Mon Sep 17 00:00:00 2001
From: 3djc <lesitewebdejc@hotmail.com>
Date: Tue, 25 Nov 2025 11:10:15 +0100
Subject: [PATCH] fix(h7): init rambackup clock so EM process operates
 correctly (#6827)

---
 radio/src/targets/common/arm/stm32/rtc_driver.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/radio/src/targets/common/arm/stm32/rtc_driver.cpp b/radio/src/targets/common/arm/stm32/rtc_driver.cpp
index 8da3296f8..ae9141c75 100644
--- a/radio/src/targets/common/arm/stm32/rtc_driver.cpp
+++ b/radio/src/targets/common/arm/stm32/rtc_driver.cpp
@@ -67,6 +67,10 @@ void rtcInit()
   __HAL_RCC_PWR_CLK_ENABLE();
 #endif
 
+#if defined(STM32H7) || defined(STM32H7RS)
+  __HAL_RCC_BKPRAM_CLK_ENABLE();
+#endif
+
   HAL_PWR_EnableBkUpAccess();
 #if defined(LSE_DRIVE_STRENGTH)
   __HAL_RCC_LSE_CONFIG(RCC_LSE_OFF);