diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index 58d0d952d60e511b235fae39ab5afce807434592..0e64c7635127975b345eea44a051ec5e3322bafb 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -199,7 +199,6 @@
 	scif0: serial@ffe40000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe40000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 88 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";
@@ -209,7 +208,6 @@
 	scif1: serial@ffe41000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe41000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 89 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";
@@ -219,7 +217,6 @@
 	scif2: serial@ffe42000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe42000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 90 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";
@@ -229,7 +226,6 @@
 	scif3: serial@ffe43000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe43000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 91 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";
@@ -239,7 +235,6 @@
 	scif4: serial@ffe44000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe44000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 92 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";
@@ -249,7 +244,6 @@
 	scif5: serial@ffe45000 {
 		compatible = "renesas,scif-r8a7779", "renesas,scif";
 		reg = <0xffe45000 0x100>;
-		interrupt-parent = <&gic>;
 		interrupts = <0 93 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg_clocks R8A7779_CLK_P>;
 		clock-names = "sci_ick";