diff --git a/arch/arm/dts/stm32mp157-u-boot.dtsi b/arch/arm/dts/stm32mp157-u-boot.dtsi
index 2594702c926f3ae47287adb125a494c09e3f28f3..ab6f673ea24c78885550618e9e9f1a32102e8cd1 100644
--- a/arch/arm/dts/stm32mp157-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157-u-boot.dtsi
@@ -17,6 +17,8 @@
 		gpio9 = &gpioj;
 		gpio10 = &gpiok;
 		gpio25 = &gpioz;
+		pinctrl0 = &pinctrl;
+		pinctrl1 = &pinctrl_z;
 	};
 
 	config {
diff --git a/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi b/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
index be3b1526288ffc668fafe0b72328bae41a0e9ecd..6a18d032ae5400c6a37c68232368a53e556254f6 100644
--- a/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
@@ -7,8 +7,10 @@
 
 / {
 	aliases {
+		gpio26 = &stmfx_pinctrl;
 		i2c1 = &i2c2;
 		i2c4 = &i2c5;
+		pinctrl2 = &stmfx_pinctrl;
 		spi0 = &qspi;
 	};
 };
diff --git a/arch/arm/dts/stm32mp157c-ev1.dts b/arch/arm/dts/stm32mp157c-ev1.dts
index e114c9b628b8bb6cd06ede612c79224062156fe5..a6ee37924fe18fe574add7271b21358dfd678376 100644
--- a/arch/arm/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/dts/stm32mp157c-ev1.dts
@@ -98,6 +98,24 @@
 	i2c-scl-rising-time-ns = <185>;
 	i2c-scl-falling-time-ns = <20>;
 	status = "okay";
+
+	stmfx: stmfx@42 {
+		compatible = "st,stmfx-0300";
+		reg = <0x42>;
+		interrupts = <8 IRQ_TYPE_EDGE_RISING>;
+		interrupt-parent = <&gpioi>;
+		vdd-supply = <&v3v3>;
+
+		stmfx_pinctrl: stmfx-pin-controller {
+			compatible = "st,stmfx-0300-pinctrl";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&stmfx_pinctrl 0 0 24>;
+			status = "disabled";
+		};
+	};
 };
 
 &i2c5 {