diff --git a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
index f379de8404cb..dde188004283 100644
--- a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
@@ -79,12 +79,59 @@ a57_1: cpu@1 {
 			clocks =<&cpg CPG_CORE 0>;
 		};
 
+		a53_0: cpu@100 {
+			compatible = "arm,cortex-a53", "arm,armv8";
+			reg = <0x100>;
+			device_type = "cpu";
+			power-domains = <&sysc 5>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks =<&cpg CPG_CORE 1>;
+		};
+
+		a53_1: cpu@101 {
+			compatible = "arm,cortex-a53", "arm,armv8";
+			reg = <0x101>;
+			device_type = "cpu";
+			power-domains = <&sysc 6>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks =<&cpg CPG_CORE 1>;
+		};
+
+		a53_2: cpu@102 {
+			compatible = "arm,cortex-a53", "arm,armv8";
+			reg = <0x102>;
+			device_type = "cpu";
+			power-domains = <&sysc 7>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks =<&cpg CPG_CORE 1>;
+		};
+
+		a53_3: cpu@103 {
+			compatible = "arm,cortex-a53", "arm,armv8";
+			reg = <0x103>;
+			device_type = "cpu";
+			power-domains = <&sysc 8>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks =<&cpg CPG_CORE 1>;
+		};
+
 		L2_CA57: cache-controller-0 {
 			compatible = "cache";
 			power-domains = <&sysc 12>;
 			cache-unified;
 			cache-level = <2>;
 		};
+
+		L2_CA53: cache-controller-1 {
+			compatible = "cache";
+			power-domains = <&sysc 21>;
+			cache-unified;
+			cache-level = <2>;
+		};
 	};
 
 	extal_clk: extal {
@@ -108,6 +155,15 @@ pcie_bus_clk: pcie_bus {
 		clock-frequency = <0>;
 	};
 
+	pmu_a53 {
+		compatible = "arm,cortex-a53-pmu";
+		interrupts-extended = <&gic GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
+				      <&gic GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>,
+				      <&gic GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
+				      <&gic GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&a53_0>, <&a53_1>, <&a53_2>, <&a53_3>;
+	};
+
 	pmu_a57 {
 		compatible = "arm,cortex-a57-pmu";
 		interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
@@ -977,7 +1033,7 @@ gic: interrupt-controller@f1010000 {
 			      <0x0 0xf1040000 0 0x20000>,
 			      <0x0 0xf1060000 0 0x20000>;
 			interrupts = <GIC_PPI 9
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
 			clocks = <&cpg CPG_MOD 408>;
 			clock-names = "clk";
 			power-domains = <&sysc 32>;
@@ -1037,10 +1093,10 @@ sensor3_crit: sensor3-crit {
 
 	timer {
 		compatible = "arm,armv8-timer";
-		interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
-				      <&gic GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
-				      <&gic GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
-				      <&gic GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+				      <&gic GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+				      <&gic GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+				      <&gic GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>;
 	};
 
 	/* External USB clocks - can be overridden by the board */