diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
index e86e6d3aa8a3..ceccddb92d40 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -257,6 +257,9 @@ &pinctrl {
 	sci0_pins: sci0-pins {
 		pinmux = <RZT2H_PORT_PINMUX(27, 4, 0x14)>,
 			 <RZT2H_PORT_PINMUX(27, 5, 0x14)>;
+		drive-strength-microamp = <9000>;
+		slew-rate = <1>;
+		input-schmitt-disable;
 	};
 
 #if SD0_EMMC