diff --git a/arch/arm/boot/dts/nuvoton-wpcm450.dtsi b/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
index 66c35626c80a6..0c547bd88bdbd 100644
--- a/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
+++ b/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
@@ -148,6 +148,311 @@ gpio7: gpio@7 {
 				gpio-controller;
 				#gpio-cells = <2>;
 			};
+
+			smb3_pins: mux-smb3 {
+				groups = "smb3";
+				function = "smb3";
+			};
+
+			smb4_pins: mux-smb4 {
+				groups = "smb4";
+				function = "smb4";
+			};
+
+			smb5_pins: mux-smb5 {
+				groups = "smb5";
+				function = "smb5";
+			};
+
+			scs1_pins: mux-scs1 {
+				groups = "scs1";
+				function = "scs1";
+			};
+
+			scs2_pins: mux-scs2 {
+				groups = "scs2";
+				function = "scs2";
+			};
+
+			scs3_pins: mux-scs3 {
+				groups = "scs3";
+				function = "scs3";
+			};
+
+			smb0_pins: mux-smb0 {
+				groups = "smb0";
+				function = "smb0";
+			};
+
+			smb1_pins: mux-smb1 {
+				groups = "smb1";
+				function = "smb1";
+			};
+
+			smb2_pins: mux-smb2 {
+				groups = "smb2";
+				function = "smb2";
+			};
+
+			bsp_pins: mux-bsp {
+				groups = "bsp";
+				function = "bsp";
+			};
+
+			hsp1_pins: mux-hsp1 {
+				groups = "hsp1";
+				function = "hsp1";
+			};
+
+			hsp2_pins: mux-hsp2 {
+				groups = "hsp2";
+				function = "hsp2";
+			};
+
+			r1err_pins: mux-r1err {
+				groups = "r1err";
+				function = "r1err";
+			};
+
+			r1md_pins: mux-r1md {
+				groups = "r1md";
+				function = "r1md";
+			};
+
+			rmii2_pins: mux-rmii2 {
+				groups = "rmii2";
+				function = "rmii2";
+			};
+
+			r2err_pins: mux-r2err {
+				groups = "r2err";
+				function = "r2err";
+			};
+
+			r2md_pins: mux-r2md {
+				groups = "r2md";
+				function = "r2md";
+			};
+
+			kbcc_pins: mux-kbcc {
+				groups = "kbcc";
+				function = "kbcc";
+			};
+
+			dvo0_pins: mux-dvo0 {
+				groups = "dvo";
+				function = "dvo0";
+			};
+
+			dvo3_pins: mux-dvo3 {
+				groups = "dvo";
+				function = "dvo3";
+			};
+
+			clko_pins: mux-clko {
+				groups = "clko";
+				function = "clko";
+			};
+
+			smi_pins: mux-smi {
+				groups = "smi";
+				function = "smi";
+			};
+
+			uinc_pins: mux-uinc {
+				groups = "uinc";
+				function = "uinc";
+			};
+
+			gspi_pins: mux-gspi {
+				groups = "gspi";
+				function = "gspi";
+			};
+
+			mben_pins: mux-mben {
+				groups = "mben";
+				function = "mben";
+			};
+
+			xcs2_pins: mux-xcs2 {
+				groups = "xcs2";
+				function = "xcs2";
+			};
+
+			xcs1_pins: mux-xcs1 {
+				groups = "xcs1";
+				function = "xcs1";
+			};
+
+			sdio_pins: mux-sdio {
+				groups = "sdio";
+				function = "sdio";
+			};
+
+			sspi_pins: mux-sspi {
+				groups = "sspi";
+				function = "sspi";
+			};
+
+			fi0_pins: mux-fi0 {
+				groups = "fi0";
+				function = "fi0";
+			};
+
+			fi1_pins: mux-fi1 {
+				groups = "fi1";
+				function = "fi1";
+			};
+
+			fi2_pins: mux-fi2 {
+				groups = "fi2";
+				function = "fi2";
+			};
+
+			fi3_pins: mux-fi3 {
+				groups = "fi3";
+				function = "fi3";
+			};
+
+			fi4_pins: mux-fi4 {
+				groups = "fi4";
+				function = "fi4";
+			};
+
+			fi5_pins: mux-fi5 {
+				groups = "fi5";
+				function = "fi5";
+			};
+
+			fi6_pins: mux-fi6 {
+				groups = "fi6";
+				function = "fi6";
+			};
+
+			fi7_pins: mux-fi7 {
+				groups = "fi7";
+				function = "fi7";
+			};
+
+			fi8_pins: mux-fi8 {
+				groups = "fi8";
+				function = "fi8";
+			};
+
+			fi9_pins: mux-fi9 {
+				groups = "fi9";
+				function = "fi9";
+			};
+
+			fi10_pins: mux-fi10 {
+				groups = "fi10";
+				function = "fi10";
+			};
+
+			fi11_pins: mux-fi11 {
+				groups = "fi11";
+				function = "fi11";
+			};
+
+			fi12_pins: mux-fi12 {
+				groups = "fi12";
+				function = "fi12";
+			};
+
+			fi13_pins: mux-fi13 {
+				groups = "fi13";
+				function = "fi13";
+			};
+
+			fi14_pins: mux-fi14 {
+				groups = "fi14";
+				function = "fi14";
+			};
+
+			fi15_pins: mux-fi15 {
+				groups = "fi15";
+				function = "fi15";
+			};
+
+			pwm0_pins: mux-pwm0 {
+				groups = "pwm0";
+				function = "pwm0";
+			};
+
+			pwm1_pins: mux-pwm1 {
+				groups = "pwm1";
+				function = "pwm1";
+			};
+
+			pwm2_pins: mux-pwm2 {
+				groups = "pwm2";
+				function = "pwm2";
+			};
+
+			pwm3_pins: mux-pwm3 {
+				groups = "pwm3";
+				function = "pwm3";
+			};
+
+			pwm4_pins: mux-pwm4 {
+				groups = "pwm4";
+				function = "pwm4";
+			};
+
+			pwm5_pins: mux-pwm5 {
+				groups = "pwm5";
+				function = "pwm5";
+			};
+
+			pwm6_pins: mux-pwm6 {
+				groups = "pwm6";
+				function = "pwm6";
+			};
+
+			pwm7_pins: mux-pwm7 {
+				groups = "pwm7";
+				function = "pwm7";
+			};
+
+			hg0_pins: mux-hg0 {
+				groups = "hg0";
+				function = "hg0";
+			};
+
+			hg1_pins: mux-hg1 {
+				groups = "hg1";
+				function = "hg1";
+			};
+
+			hg2_pins: mux-hg2 {
+				groups = "hg2";
+				function = "hg2";
+			};
+
+			hg3_pins: mux-hg3 {
+				groups = "hg3";
+				function = "hg3";
+			};
+
+			hg4_pins: mux-hg4 {
+				groups = "hg4";
+				function = "hg4";
+			};
+
+			hg5_pins: mux-hg5 {
+				groups = "hg5";
+				function = "hg5";
+			};
+
+			hg6_pins: mux-hg6 {
+				groups = "hg6";
+				function = "hg6";
+			};
+
+			hg7_pins: mux-hg7 {
+				groups = "hg7";
+				function = "hg7";
+			};
 		};
 	};
 };
