diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 6ca80d16ee78d..d65788d16e225 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -5,6 +5,10 @@
  * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
  */
 
+#include <dt-bindings/mux/mux.h>
+
+#include "k3-serdes.h"
+
 &cbass_main {
 	msmc_ram: sram@70000000 {
 		compatible = "mmio-sram";
@@ -26,6 +30,42 @@
 		};
 	};
 
+	scm_conf: bus@100000 {
+		compatible = "simple-bus";
+		reg = <0x00 0x00100000 0x00 0x1c000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00 0x00 0x00100000 0x1c000>;
+
+		serdes_ln_ctrl: mux-controller@4080 {
+			compatible = "reg-mux";
+			reg = <0x00004080 0x30>;
+			#mux-control-cells = <1>;
+			mux-reg-masks = <0x4080 0x3>, <0x4084 0x3>, /* SERDES0 lane0/1 select */
+					<0x4088 0x3>, <0x408c 0x3>, /* SERDES0 lane2/3 select */
+					<0x4090 0x3>, <0x4094 0x3>, /* SERDES1 lane0/1 select */
+					<0x4098 0x3>, <0x409c 0x3>, /* SERDES1 lane2/3 select */
+					<0x40a0 0x3>, <0x40a4 0x3>, /* SERDES2 lane0/1 select */
+					<0x40a8 0x3>, <0x40ac 0x3>; /* SERDES2 lane2/3 select */
+			idle-states = <J784S4_SERDES0_LANE0_PCIE1_LANE0>,
+				      <J784S4_SERDES0_LANE1_PCIE1_LANE1>,
+				      <J784S4_SERDES0_LANE2_IP3_UNUSED>,
+				      <J784S4_SERDES0_LANE3_USB>,
+				      <J784S4_SERDES1_LANE0_PCIE0_LANE0>,
+				      <J784S4_SERDES1_LANE1_PCIE0_LANE1>,
+				      <J784S4_SERDES1_LANE2_PCIE0_LANE2>,
+				      <J784S4_SERDES1_LANE3_PCIE0_LANE3>,
+				      <J784S4_SERDES2_LANE0_IP2_UNUSED>,
+				      <J784S4_SERDES2_LANE1_IP2_UNUSED>,
+				      <J784S4_SERDES2_LANE2_QSGMII_LANE1>,
+				      <J784S4_SERDES2_LANE3_QSGMII_LANE2>,
+				      <J784S4_SERDES4_LANE0_EDP_LANE0>,
+				      <J784S4_SERDES4_LANE1_EDP_LANE1>,
+				      <J784S4_SERDES4_LANE2_EDP_LANE2>,
+				      <J784S4_SERDES4_LANE3_EDP_LANE3>;
+		};
+	};
+
 	gic500: interrupt-controller@1800000 {
 		compatible = "arm,gic-v3";
 		#address-cells = <2>;