diff --git a/dts/arm/st/l4/stm32l4.dtsi b/dts/arm/st/l4/stm32l4.dtsi
index 2c39cc5cc25..a8ebf463da2 100644
--- a/dts/arm/st/l4/stm32l4.dtsi
+++ b/dts/arm/st/l4/stm32l4.dtsi
@@ -116,15 +116,6 @@
 			label = "UART_2";
 		};
 
-		usart3: serial@40004800 {
-			compatible = "st,stm32-usart", "st,stm32-uart";
-			reg = <0x40004800 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00040000>;
-			interrupts = <39 0>;
-			status = "disabled";
-			label = "UART_3";
-		};
-
 		lpuart1: serial@40008000 {
 			compatible = "st,stm32-lpuart", "st,stm32-uart";
 			reg = <0x40008000 0x400>;
@@ -171,16 +162,6 @@
 			label = "SPI_1";
 		};
 
-		spi2: spi@40003800 {
-			compatible = "st,stm32-spi-fifo";
-			#address-cells = <1>;
-			#size-cells = <0>;
-			reg = <0x40003800 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
-			interrupts = <36 5>;
-			status = "disabled";
-			label = "SPI_2";
-		};
 
 		timers1: timers@40012c00 {
 			compatible = "st,stm32-timers";
diff --git a/dts/arm/st/l4/stm32l433.dtsi b/dts/arm/st/l4/stm32l433.dtsi
new file mode 100644
index 00000000000..1cf67b4903b
--- /dev/null
+++ b/dts/arm/st/l4/stm32l433.dtsi
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2018 Markus Roppelt
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <st/l4/stm32l432.dtsi>
+
+/ {
+	soc {
+		pinctrl: pin-controller@48000000 {
+			gpiod: gpio@48000c00 {
+				compatible = "st,stm32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
+				reg = <0x48000c00 0x400>;
+				clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000008>;
+				label = "GPIOD";
+			};
+
+			gpioe: gpio@48001000 {
+				compatible = "st,stm32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
+				reg = <0x48001000 0x400>;
+				clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000010>;
+				label = "GPIOE";
+			};
+		};
+
+		i2c2: i2c@40005800 {
+			compatible = "st,stm32-i2c-v2";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40005800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00400000>;
+			interrupts = <33 0>, <34 0>;
+			interrupt-names = "event", "error";
+			status = "disabled";
+			label= "I2C_2";
+		};
+
+		spi2: spi@40003800 {
+			compatible = "st,stm32-spi-fifo";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40003800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
+			interrupts = <36 5>;
+			status = "disabled";
+			label = "SPI_2";
+		};
+
+		usart3: serial@40004800 {
+			compatible = "st,stm32-usart", "st,stm32-uart";
+			reg = <0x40004800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00040000>;
+			interrupts = <39 0>;
+			status = "disabled";
+			label = "UART_3";
+		};
+	};
+};
\ No newline at end of file
diff --git a/dts/arm/st/l4/stm32l471.dtsi b/dts/arm/st/l4/stm32l471.dtsi
index 7e09a793836..f6fd79c129b 100644
--- a/dts/arm/st/l4/stm32l471.dtsi
+++ b/dts/arm/st/l4/stm32l471.dtsi
@@ -47,6 +47,15 @@
 			};
 		};
 
+		usart3: serial@40004800 {
+			compatible = "st,stm32-usart", "st,stm32-uart";
+			reg = <0x40004800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00040000>;
+			interrupts = <39 0>;
+			status = "disabled";
+			label = "UART_3";
+		};
+
 		uart4: serial@40004c00 {
 			compatible = "st,stm32-uart";
 			reg = <0x40004c00 0x400>;
@@ -78,6 +87,17 @@
 			label= "I2C_2";
 		};
 
+		spi2: spi@40003800 {
+			compatible = "st,stm32-spi-fifo";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40003800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
+			interrupts = <36 5>;
+			status = "disabled";
+			label = "SPI_2";
+		};
+
 		spi3: spi@40003c00 {
 			compatible = "st,stm32-spi-fifo";
 			#address-cells = <1>;
diff --git a/dts/arm/st/l4/stm32l4r5.dtsi b/dts/arm/st/l4/stm32l4r5.dtsi
index bbd37fe78f3..9b422e2f634 100644
--- a/dts/arm/st/l4/stm32l4r5.dtsi
+++ b/dts/arm/st/l4/stm32l4r5.dtsi
@@ -57,6 +57,15 @@
 			};
 		};
 
+		usart3: serial@40004800 {
+			compatible = "st,stm32-usart", "st,stm32-uart";
+			reg = <0x40004800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00040000>;
+			interrupts = <39 0>;
+			status = "disabled";
+			label = "UART_3";
+		};
+
 		uart4: serial@40004c00 {
 			compatible = "st,stm32-uart";
 			reg = <0x40004c00 0x400>;
@@ -88,6 +97,17 @@
 			label= "I2C_4";
 		};
 
+		spi2: spi@40003800 {
+			compatible = "st,stm32-spi-fifo";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40003800 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
+			interrupts = <36 5>;
+			status = "disabled";
+			label = "SPI_2";
+		};
+
 		spi3: spi@40003c00 {
 			compatible = "st,stm32-spi-fifo";
 			#address-cells = <1>;