diff --git a/fdts/stm32mp135f-dk.dts b/fdts/stm32mp135f-dk.dts
index 9a3a594..08fbbb9 100644
--- a/fdts/stm32mp135f-dk.dts
+++ b/fdts/stm32mp135f-dk.dts
@@ -190,7 +190,6 @@
 		CLK_AXI_PLL2P
 		CLK_MLAHBS_PLL3
 		CLK_CKPER_HSE
-		CLK_RTC_LSE
 		CLK_SDMMC1_PLL4P
 		CLK_SDMMC2_PLL4P
 		CLK_STGEN_HSE
@@ -212,7 +211,6 @@
 		DIV(DIV_APB4, 1)
 		DIV(DIV_APB5, 2)
 		DIV(DIV_APB6, 1)
-		DIV(DIV_RTC, 0)
 	>;
 
 	st,pll_vco {
diff --git a/fdts/stm32mp157c-ed1.dts b/fdts/stm32mp157c-ed1.dts
index fe5f464..d85221b 100644
--- a/fdts/stm32mp157c-ed1.dts
+++ b/fdts/stm32mp157c-ed1.dts
@@ -194,7 +194,6 @@
 		CLK_MPU_PLL1P
 		CLK_AXI_PLL2P
 		CLK_MCU_PLL3P
-		CLK_RTC_LSE
 		CLK_MCO1_DISABLED
 		CLK_MCO2_DISABLED
 		CLK_CKPER_HSE
@@ -243,7 +242,6 @@
 		DIV(DIV_APB3, 1)
 		DIV(DIV_APB4, 1)
 		DIV(DIV_APB5, 2)
-		DIV(DIV_RTC, 23)
 		DIV(DIV_MCO1, 0)
 		DIV(DIV_MCO2, 0)
 	>;
diff --git a/fdts/stm32mp15xx-dkx.dtsi b/fdts/stm32mp15xx-dkx.dtsi
index 3115a00..bac9e05 100644
--- a/fdts/stm32mp15xx-dkx.dtsi
+++ b/fdts/stm32mp15xx-dkx.dtsi
@@ -198,7 +198,6 @@
 		CLK_MPU_PLL1P
 		CLK_AXI_PLL2P
 		CLK_MCU_PLL3P
-		CLK_RTC_LSE
 		CLK_MCO1_DISABLED
 		CLK_MCO2_DISABLED
 		CLK_CKPER_HSE
@@ -247,7 +246,6 @@
 		DIV(DIV_APB3, 1)
 		DIV(DIV_APB4, 1)
 		DIV(DIV_APB5, 2)
-		DIV(DIV_RTC, 23)
 		DIV(DIV_MCO1, 0)
 		DIV(DIV_MCO2, 0)
 	>;