diff --git a/arch/arm/boot/dts/r8a7742.dtsi b/arch/arm/boot/dts/r8a7742.dtsi
index cc452e243446..32ed4138dc1b 100644
--- a/arch/arm/boot/dts/r8a7742.dtsi
+++ b/arch/arm/boot/dts/r8a7742.dtsi
@@ -961,6 +961,34 @@
 			status = "disabled";
 		};
 
+		scifa0: serial@e6c40000 {
+			compatible = "renesas,scifa-r8a7742",
+				     "renesas,scifa";
+			reg = <0 0xe6c40000 0 0x40>;
+			interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp2_clks R8A7742_CLK_SCIFA0>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x21>, <&dmac0 0x22>,
+			       <&dmac1 0x21>, <&dmac1 0x22>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scifa1: serial@e6c50000 {
+			compatible = "renesas,scifa-r8a7742",
+				     "renesas,scifa";
+			reg = <0 0xe6c50000 0 0x40>;
+			interrupts = <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp2_clks R8A7742_CLK_SCIFA1>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x25>, <&dmac0 0x26>,
+			       <&dmac1 0x25>, <&dmac1 0x26>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
 		scifa2: serial@e6c60000 {
 			compatible = "renesas,scifa-r8a7742",
 				     "renesas,scifa";
@@ -1035,6 +1063,123 @@
 			status = "disabled";
 		};
 
+		scifb0: serial@e6c20000 {
+			compatible = "renesas,scifb-r8a7742",
+				     "renesas,scifb";
+			reg = <0 0xe6c20000 0 0x100>;
+			interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp2_clks R8A7742_CLK_SCIFB0>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x3d>, <&dmac0 0x3e>,
+			       <&dmac1 0x3d>, <&dmac1 0x3e>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scifb1: serial@e6c30000 {
+			compatible = "renesas,scifb-r8a7742",
+				     "renesas,scifb";
+			reg = <0 0xe6c30000 0 0x100>;
+			interrupts = <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp2_clks R8A7742_CLK_SCIFB1>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x19>, <&dmac0 0x1a>,
+			       <&dmac1 0x19>, <&dmac1 0x1a>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scifb2: serial@e6ce0000 {
+			compatible = "renesas,scifb-r8a7742",
+				     "renesas,scifb";
+			reg = <0 0xe6ce0000 0 0x100>;
+			interrupts = <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp2_clks R8A7742_CLK_SCIFB2>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x1d>, <&dmac0 0x1e>,
+			       <&dmac1 0x1d>, <&dmac1 0x1e>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scif0: serial@e6e60000 {
+			compatible = "renesas,scif-r8a7742",
+				     "renesas,scif";
+			reg = <0 0xe6e60000 0 0x40>;
+			interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp7_clks R8A7742_CLK_SCIF0>,
+				 <&zs_clk>, <&scif_clk>;
+			clock-names = "sci_ick", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x29>, <&dmac0 0x2a>,
+			       <&dmac1 0x29>, <&dmac1 0x2a>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scif1: serial@e6e68000 {
+			compatible = "renesas,scif-r8a7742",
+				     "renesas,scif";
+			reg = <0 0xe6e68000 0 0x40>;
+			interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp7_clks R8A7742_CLK_SCIF1>,
+				 <&zs_clk>, <&scif_clk>;
+			clock-names = "sci_ick", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x2d>, <&dmac0 0x2e>,
+			       <&dmac1 0x2d>, <&dmac1 0x2e>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		scif2: serial@e6e56000 {
+			compatible = "renesas,scif-r8a7742",
+				     "renesas,scif";
+			reg = <0 0xe6e56000 0 0x40>;
+			interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp7_clks R8A7742_CLK_SCIF2>,
+				 <&zs_clk>, <&scif_clk>;
+			clock-names = "sci_ick", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x2b>, <&dmac0 0x2c>,
+			       <&dmac1 0x2b>, <&dmac1 0x2c>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		hscif0: serial@e62c0000 {
+			compatible = "renesas,hscif-r8a7742",
+				     "renesas,hscif";
+			reg = <0 0xe62c0000 0 0x60>;
+			interrupts = <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp7_clks R8A7742_CLK_HSCIF0>,
+				 <&zs_clk>, <&scif_clk>;
+			clock-names = "sci_ick", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x39>, <&dmac0 0x3a>,
+			       <&dmac1 0x39>, <&dmac1 0x3a>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
+		hscif1: serial@e62c8000 {
+			compatible = "renesas,hscif-r8a7742",
+				     "renesas,hscif";
+			reg = <0 0xe62c8000 0 0x60>;
+			interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&mstp7_clks R8A7742_CLK_HSCIF1>,
+				 <&zs_clk>, <&scif_clk>;
+			clock-names = "sci_ick", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x4d>, <&dmac0 0x4e>,
+			       <&dmac1 0x4d>, <&dmac1 0x4e>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&cpg_clocks>;
+			status = "disabled";
+		};
+
 		sdhi0: mmc@ee100000 {
 			compatible = "renesas,sdhi-r8a7742",
 				     "renesas,rcar-gen2-sdhi";
