diff --git a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
index 6512d5b8f40..43c579d5588 100644
--- a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
+++ b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
@@ -205,4 +205,19 @@
 		};
 	};
 
+	pinmux_i3c: pinmux_i3c {
+		group0 {
+			pinmux = <I3C0_SCL_PIO2_29>,
+				<I3C0_SDA_PIO2_30>;
+			input-enable;
+			slew-rate = "slow";
+			drive-strength = "high";
+		};
+
+		group1 {
+			pinmux = <I3C0_PUR_PIO2_31>;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+	};
 };
diff --git a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.dts b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.dts
index 23bf7d80fac..bfc78d1e95d 100644
--- a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.dts
+++ b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.dts
@@ -444,3 +444,10 @@ zephyr_udc0: &usbhs {
 &ctimer4 {
 	status = "okay";
 };
+
+&i3c0 {
+	pinctrl-0 = <&pinmux_i3c>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
diff --git a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.yaml b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.yaml
index 605562fcc65..69904945e3d 100644
--- a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.yaml
+++ b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33.yaml
@@ -24,6 +24,7 @@ supported:
   - gpio
   - hwinfo
   - i2c
+  - i3c
   - i2s
   - sdhc
   - spi