diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 951e351ddae1..aa404ed9142e 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -499,6 +499,9 @@ hscif0: serial@e6540000 {
 				 <&cpg CPG_CORE R8A7796_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac1 0x31>, <&dmac1 0x30>,
+			       <&dmac2 0x31>, <&dmac2 0x30>;
+			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			status = "disabled";
 		};
@@ -513,6 +516,9 @@ hscif1: serial@e6550000 {
 				 <&cpg CPG_CORE R8A7796_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac1 0x33>, <&dmac1 0x32>,
+			       <&dmac2 0x33>, <&dmac2 0x32>;
+			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			status = "disabled";
 		};
@@ -527,6 +533,9 @@ hscif2: serial@e6560000 {
 				 <&cpg CPG_CORE R8A7796_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac1 0x35>, <&dmac1 0x34>,
+			       <&dmac2 0x35>, <&dmac2 0x34>;
+			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			status = "disabled";
 		};
@@ -541,6 +550,8 @@ hscif3: serial@e66a0000 {
 				 <&cpg CPG_CORE R8A7796_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x37>, <&dmac0 0x36>;
+			dma-names = "tx", "rx";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			status = "disabled";
 		};
@@ -555,6 +566,8 @@ hscif4: serial@e66b0000 {
 				 <&cpg CPG_CORE R8A7796_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac0 0x39>, <&dmac0 0x38>;
+			dma-names = "tx", "rx";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			status = "disabled";
 		};