diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 194e9464b7487af0..14aa62539ff29769 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -685,8 +685,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6e60000 0 64>;
 		interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF0>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF0>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x29>, <&dmac0 0x2a>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -698,8 +699,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6e68000 0 64>;
 		interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF1>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF1>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x2d>, <&dmac0 0x2e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -711,8 +713,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6e58000 0 64>;
 		interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF2>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF2>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x2b>, <&dmac0 0x2c>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -724,8 +727,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6ea8000 0 64>;
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF3>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF3>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x2f>, <&dmac0 0x30>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -737,8 +741,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6ee0000 0 64>;
 		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF4>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF4>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0xfb>, <&dmac0 0xfc>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -750,8 +755,9 @@
 			     "renesas,scif";
 		reg = <0 0xe6ee8000 0 64>;
 		interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_SCIF5>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_SCIF5>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0xfd>, <&dmac0 0xfe>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -763,8 +769,9 @@
 			     "renesas,rcar-gen2-hscif", "renesas,hscif";
 		reg = <0 0xe62c0000 0 96>;
 		interrupts = <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_HSCIF0>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_HSCIF0>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x39>, <&dmac0 0x3a>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -776,8 +783,9 @@
 			     "renesas,rcar-gen2-hscif", "renesas,hscif";
 		reg = <0 0xe62c8000 0 96>;
 		interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_HSCIF1>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_HSCIF1>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x4d>, <&dmac0 0x4e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -789,8 +797,9 @@
 			     "renesas,rcar-gen2-hscif", "renesas,hscif";
 		reg = <0 0xe62d0000 0 96>;
 		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7791_CLK_HSCIF2>;
-		clock-names = "fck";
+		clocks = <&mstp7_clks R8A7791_CLK_HSCIF2>, <&zs_clk>,
+			 <&scif_clk>;
+		clock-names = "fck", "brg_int", "scif_clk";
 		dmas = <&dmac0 0x3b>, <&dmac0 0x3c>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -1049,6 +1058,15 @@
 			status = "disabled";
 		};
 
+		/* External SCIF clock */
+		scif_clk: scif {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			/* This value must be overridden by the board. */
+			clock-frequency = <0>;
+			status = "disabled";
+		};
+
 		/* External USB clock - can be overridden by the board */
 		usb_extal_clk: usb_extal_clk {
 			compatible = "fixed-clock";
