diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index c01a7e4f59a4a81f68b12dbbd34e7d124dd641d2..348baebffeac0e3ba544ed44aaec65f7dbd638ac 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -262,6 +262,66 @@
 			#size-cells = <0>;
 		};
 
+		hscif0: serial@e6540000 {
+			compatible = "renesas,hscif-r8a7795", "renesas,hscif";
+			reg = <0 0xe6540000 0 96>;
+			interrupts = <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 520>;
+			clock-names = "sci_ick";
+			dmas = <&dmac1 0x31>, <&dmac1 0x30>;
+			dma-names = "tx", "rx";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		hscif1: serial@e6550000 {
+			compatible = "renesas,hscif-r8a7795", "renesas,hscif";
+			reg = <0 0xe6550000 0 96>;
+			interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 519>;
+			clock-names = "sci_ick";
+			dmas = <&dmac1 0x33>, <&dmac1 0x32>;
+			dma-names = "tx", "rx";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		hscif2: serial@e6560000 {
+			compatible = "renesas,hscif-r8a7795", "renesas,hscif";
+			reg = <0 0xe6560000 0 96>;
+			interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 518>;
+			clock-names = "sci_ick";
+			dmas = <&dmac1 0x35>, <&dmac1 0x34>;
+			dma-names = "tx", "rx";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		hscif3: serial@e66a0000 {
+			compatible = "renesas,hscif-r8a7795", "renesas,hscif";
+			reg = <0 0xe66a0000 0 96>;
+			interrupts = <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 517>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x37>, <&dmac0 0x36>;
+			dma-names = "tx", "rx";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		hscif4: serial@e66b0000 {
+			compatible = "renesas,hscif-r8a7795", "renesas,hscif";
+			reg = <0 0xe66b0000 0 96>;
+			interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 516>;
+			clock-names = "sci_ick";
+			dmas = <&dmac0 0x39>, <&dmac0 0x38>;
+			dma-names = "tx", "rx";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
 		scif0: serial@e6e60000 {
 			compatible = "renesas,scif-r8a7795", "renesas,scif";
 			reg = <0 0xe6e60000 0 64>;