diff --git a/package/boot/arm-trusted-firmware-stm32/Makefile b/package/boot/arm-trusted-firmware-stm32/Makefile
index 5d3b3d2b8a2..2d4717adb62 100644
--- a/package/boot/arm-trusted-firmware-stm32/Makefile
+++ b/package/boot/arm-trusted-firmware-stm32/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_VERSION:=2.12
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_HASH:=b4c047493cac1152203e1ba121ae57267e4899b7bf56eb365e22a933342d31c9
 PKG_MAINTAINER:=Thomas Richard <thomas.richard@bootlin.com>
diff --git a/package/boot/arm-trusted-firmware-stm32/patches/0001-Revert-feat-stm32mp1-fdts-remove-RTC-clock-configura.patch b/package/boot/arm-trusted-firmware-stm32/patches/0001-fix-stm32mp1-fdts-re-enable-RTC-clock.patch
similarity index 53%
rename from package/boot/arm-trusted-firmware-stm32/patches/0001-Revert-feat-stm32mp1-fdts-remove-RTC-clock-configura.patch
rename to package/boot/arm-trusted-firmware-stm32/patches/0001-fix-stm32mp1-fdts-re-enable-RTC-clock.patch
index 58b896c65de..f2ca58ba6ab 100644
--- a/package/boot/arm-trusted-firmware-stm32/patches/0001-Revert-feat-stm32mp1-fdts-remove-RTC-clock-configura.patch
+++ b/package/boot/arm-trusted-firmware-stm32/patches/0001-fix-stm32mp1-fdts-re-enable-RTC-clock.patch
@@ -1,33 +1,18 @@
-From 0e1a71d84585ec33b479c2cb8c8d65a4f6734dbe Mon Sep 17 00:00:00 2001
-From: Thomas Richard <thomas.richard@bootlin.com>
-Date: Wed, 4 Dec 2024 14:26:52 +0100
-Subject: [PATCH] Revert "feat(stm32mp1-fdts): remove RTC clock configuration"
+From 33573ea6842198cfdb5b3fdd320db9e2045855e9 Mon Sep 17 00:00:00 2001
+From: Valentin Caron <valentin.caron@foss.st.com>
+Date: Wed, 11 Dec 2024 11:20:04 +0100
+Subject: [PATCH] fix(stm32mp1-fdts): re-enable RTC clock
 
-This reverts commit 703a581e2522bffe21b421c98994dc02aed2934c.
+On STM32MP15 ST boards, RTC clock configuration by OPTEE is not ready
+yet. Re-enable it temporary to get LSE as clock source of RTC.
+
+Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
+Change-Id: Ib6071229552e456faffb4fdfc8db9808140d54a7
 ---
- fdts/stm32mp135f-dk.dts   | 2 ++
  fdts/stm32mp157c-ed1.dts  | 2 ++
  fdts/stm32mp15xx-dkx.dtsi | 2 ++
- 3 files changed, 6 insertions(+)
+ 2 files changed, 4 insertions(+)
 
---- a/fdts/stm32mp135f-dk.dts
-+++ b/fdts/stm32mp135f-dk.dts
-@@ -190,6 +190,7 @@
- 		CLK_AXI_PLL2P
- 		CLK_MLAHBS_PLL3
- 		CLK_CKPER_HSE
-+		CLK_RTC_LSE
- 		CLK_SDMMC1_PLL4P
- 		CLK_SDMMC2_PLL4P
- 		CLK_STGEN_HSE
-@@ -211,6 +212,7 @@
- 		DIV(DIV_APB4, 1)
- 		DIV(DIV_APB5, 2)
- 		DIV(DIV_APB6, 1)
-+		DIV(DIV_RTC, 0)
- 	>;
- 
- 	st,pll_vco {
 --- a/fdts/stm32mp157c-ed1.dts
 +++ b/fdts/stm32mp157c-ed1.dts
 @@ -194,6 +194,7 @@