diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index fd730aa37c22..b9657ff91c23 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -29,6 +29,12 @@ arm-pmu {
 		interrupt-parent = <&intc>;
 	};
 
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		status = "disabled";
+	};
+
 	firmware {
 		optee {
 			method = "smc";
@@ -1000,6 +1006,7 @@ usbh_ehci: usb@5800d000 {
 		iwdg2: watchdog@5a002000 {
 			compatible = "st,stm32mp1-iwdg";
 			reg = <0x5a002000 0x400>;
+			interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&rcc IWDG2>, <&scmi_clk CK_SCMI_LSI>;
 			clock-names = "pclk", "lsi";
 			status = "disabled";
@@ -1657,6 +1664,16 @@ usbphyc_port1: usb-phy@1 {
 					reg = <1>;
 				};
 			};
+
+			iwdg1: watchdog@5c003000 {
+				compatible = "st,stm32mp1-iwdg";
+				reg = <0x5c003000 0x400>;
+				interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&rcc IWDG1>, <&scmi_clk CK_SCMI_LSI>;
+				clock-names = "pclk", "lsi";
+				access-controllers = <&etzpc 12>;
+				status = "disabled";
+			};
 		};
 
 		/*
diff --git a/arch/arm/boot/dts/st/stm32mp135f-dk.dts b/arch/arm/boot/dts/st/stm32mp135f-dk.dts
index 9764a6bfa5b4..f894ee35b3db 100644
--- a/arch/arm/boot/dts/st/stm32mp135f-dk.dts
+++ b/arch/arm/boot/dts/st/stm32mp135f-dk.dts
@@ -161,6 +161,11 @@ channel@12 {
 	};
 };
 
+&arm_wdt {
+	timeout-sec = <32>;
+	status = "okay";
+};
+
 &crc1 {
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/st/stm32mp153c-lxa-fairytux2.dtsi b/arch/arm/boot/dts/st/stm32mp153c-lxa-fairytux2.dtsi
index 9eeb9d6b5eb0..7d3a6a3b5d09 100644
--- a/arch/arm/boot/dts/st/stm32mp153c-lxa-fairytux2.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp153c-lxa-fairytux2.dtsi
@@ -374,9 +374,6 @@ &usbotg_hs {
 	phys = <&usbphyc_port1 0>;
 	phy-names = "usb2-phy";
 
-	vusb_d-supply = <&vdd_usb>;
-	vusb_a-supply = <&reg18>;
-
 	status = "okay";
 };
 
diff --git a/arch/arm/boot/dts/st/stm32mp157c-phycore-stm32mp15-som.dtsi b/arch/arm/boot/dts/st/stm32mp157c-phycore-stm32mp15-som.dtsi
index bf0c32027baf..370b2afbf15b 100644
--- a/arch/arm/boot/dts/st/stm32mp157c-phycore-stm32mp15-som.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp157c-phycore-stm32mp15-som.dtsi
@@ -185,13 +185,13 @@ touch@44 {
 		interrupt-parent = <&gpioi>;
 		vio-supply = <&v3v3>;
 		vcc-supply = <&v3v3>;
+		st,sample-time = <4>;
+		st,mod-12b = <1>;
+		st,ref-sel = <0>;
+		st,adc-freq = <1>;
 
 		touchscreen {
 			compatible = "st,stmpe-ts";
-			st,sample-time = <4>;
-			st,mod-12b = <1>;
-			st,ref-sel = <0>;
-			st,adc-freq = <1>;
 			st,ave-ctrl = <1>;
 			st,touch-det-delay = <2>;
 			st,settling = <2>;
diff --git a/arch/arm/boot/dts/st/stm32mp15xc-lxa-tac.dtsi b/arch/arm/boot/dts/st/stm32mp15xc-lxa-tac.dtsi
index 154698f87b0e..ab13f0c39892 100644
--- a/arch/arm/boot/dts/st/stm32mp15xc-lxa-tac.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15xc-lxa-tac.dtsi
@@ -493,9 +493,6 @@ &usbotg_hs {
 	phys = <&usbphyc_port1 0>;
 	phy-names = "usb2-phy";
 
-	vusb_d-supply = <&vdd_usb>;
-	vusb_a-supply = <&reg18>;
-
 	g-rx-fifo-size = <512>;
 	g-np-tx-fifo-size = <32>;
 	g-tx-fifo-size = <128 128 64 16 16 16 16 16>;
diff --git a/arch/arm64/boot/dts/st/stm32mp211.dtsi b/arch/arm64/boot/dts/st/stm32mp211.dtsi
index bf888d60cd4f..cd078a16065e 100644
--- a/arch/arm64/boot/dts/st/stm32mp211.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp211.dtsi
@@ -94,18 +94,20 @@ soc@0 {
 		#size-cells = <2>;
 
 		rifsc: bus@42080000 {
-			compatible = "simple-bus";
+			compatible = "st,stm32mp21-rifsc", "simple-bus";
 			reg = <0x42080000 0x0 0x1000>;
 			ranges;
 			dma-ranges;
 			#address-cells = <1>;
 			#size-cells = <2>;
+			#access-controller-cells = <1>;
 
 			usart2: serial@400e0000 {
 				compatible = "st,stm32h7-uart";
 				reg = <0x400e0000 0x0 0x400>;
 				interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&ck_flexgen_08>;
+				access-controllers = <&rifsc 32>;
 				status = "disabled";
 			};
 		};
diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
index e0d102eb6176..c34cd33cd855 100644
--- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
@@ -38,6 +38,7 @@ pins1 {
 			bias-disable;
 			drive-push-pull;
 			slew-rate = <3>;
+			st,io-sync = "data on both edges";
 		};
 		pins2 {
 			pinmux = <STM32_PINMUX('H', 9, AF10)>, /* ETH_RGMII_CLK125 */
@@ -53,6 +54,7 @@ pins3 {
 				 <STM32_PINMUX('H', 13, AF10)>, /* ETH_RGMII_RXD3 */
 				 <STM32_PINMUX('A', 11, AF10)>; /* ETH_RGMII_RX_CTL */
 			bias-disable;
+			st,io-sync = "data on both edges";
 		};
 		pins4 {
 			pinmux = <STM32_PINMUX('A', 14, AF10)>; /* ETH_RGMII_RX_CLK */
@@ -142,6 +144,7 @@ pins1 {
 			bias-disable;
 			drive-push-pull;
 			slew-rate = <3>;
+			st,io-sync = "data on both edges";
 		};
 		pins2 {
 			pinmux = <STM32_PINMUX('F', 8, AF10)>, /* ETH_RGMII_CLK125 */
@@ -164,6 +167,7 @@ pins4 {
 				 <STM32_PINMUX('C', 11, AF10)>, /* ETH_RGMII_RXD3 */
 				 <STM32_PINMUX('C', 3, AF10)>; /* ETH_RGMII_RX_CTL */
 			bias-disable;
+			st,io-sync = "data on both edges";
 		};
 		pins5 {
 			pinmux = <STM32_PINMUX('F', 6, AF10)>; /* ETH_RGMII_RX_CLK */
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 6e165073f732..bb6d6393d2e4 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -266,6 +266,7 @@ &i2c8 {
 
 &ommanager {
 	memory-region = <&mm_ospi1>;
+	memory-region-names = "ospi1";
 	pinctrl-0 = <&ospi_port1_clk_pins_a
 		     &ospi_port1_io03_pins_a
 		     &ospi_port1_cs0_pins_a>;