diff --git a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
index fde8a3002b3..6512d5b8f40 100644
--- a/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
+++ b/boards/arm/mimxrt685_evk/mimxrt685_evk_cm33-pinctrl.dtsi
@@ -171,7 +171,8 @@
 		group0 {
 			pinmux = <SCT0_OUT7_PIO0_27>,
 				<SCT0_OUT0_PIO0_14>,
-				<SCT0_OUT6_PIO0_26>;
+				<SCT0_OUT6_PIO0_26>,
+				<SCT0_OUT6_PIO0_31>;
 			slew-rate = "normal";
 			drive-strength = "normal";
 		};
diff --git a/boards/arm/mimxrt685_evk/pinmux.c b/boards/arm/mimxrt685_evk/pinmux.c
index fb44771fd77..779293cdc17 100644
--- a/boards/arm/mimxrt685_evk/pinmux.c
+++ b/boards/arm/mimxrt685_evk/pinmux.c
@@ -42,29 +42,6 @@ static int mimxrt685_evk_pinmux_init(const struct device *dev)
 	SYSCTL1->FCCTRLSEL[3] |= SYSCTL1_FCCTRLSEL_DATAOUTSEL(1);
 #endif
 
-#endif
-
-#if DT_NODE_HAS_STATUS(DT_NODELABEL(red_pwm_led), okay)
-	uint32_t port0_pin31_config = (
-			IOPCTL_PIO_FUNC3 |
-			/* Disable pull-up / pull-down function */
-			IOPCTL_PIO_PUPD_DI |
-			/* Enable pull-down function */
-			IOPCTL_PIO_PULLDOWN_EN |
-			/* Disable input buffer function */
-			IOPCTL_PIO_INBUF_DI |
-			/* Normal mode */
-			IOPCTL_PIO_SLEW_RATE_NORMAL |
-			/* Normal drive */
-			IOPCTL_PIO_FULLDRIVE_DI |
-			/* Analog mux is disabled */
-			IOPCTL_PIO_ANAMUX_DI |
-			/* Pseudo Output Drain is disabled */
-			IOPCTL_PIO_PSEDRAIN_DI |
-			/* Input function is not inverted */
-			IOPCTL_PIO_INV_DI);
-	/* PORT0 PIN31 (coords: B3) is configured as SCT0_OUT6 */
-	IOPCTL_PinMuxSet(IOPCTL, 0U, 31U, port0_pin31_config);
 #endif
 	return 0;
 }