diff --git a/arch/arm64/boot/dts/renesas/r9a09g077.dtsi b/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
index 81f6a36e6e72..3761551c9647 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g077.dtsi
@@ -8,6 +8,24 @@
 #include <dt-bindings/clock/renesas,r9a09g077-cpg-mssr.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
+/* The IRQ_NS lines start at offset 16 in the ICU interrupt space */
+#define RZT2H_IRQ0	16
+#define RZT2H_IRQ1	17
+#define RZT2H_IRQ2	18
+#define RZT2H_IRQ3	19
+#define RZT2H_IRQ4	20
+#define RZT2H_IRQ5	21
+#define RZT2H_IRQ6	22
+#define RZT2H_IRQ7	23
+#define RZT2H_IRQ8	24
+#define RZT2H_IRQ9	25
+#define RZT2H_IRQ10	26
+#define RZT2H_IRQ11	27
+#define RZT2H_IRQ12	28
+#define RZT2H_IRQ13	29
+#define RZT2H_IRQ14	30
+#define RZT2H_IRQ15	31
+
 / {
 	compatible = "renesas,r9a09g077";
 	#address-cells = <2>;
diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index 49464e6d212b..52e5f6c3ab67 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -227,10 +227,12 @@
 };
 
 &mdio1_phy {
+	interrupts-extended = <&icu RZT2H_IRQ3 IRQ_TYPE_EDGE_FALLING>;
 	reset-gpios = <&pinctrl RZT2H_GPIO(32, 3) GPIO_ACTIVE_LOW>;
 };
 
 &mdio2_phy {
+	interrupts-extended = <&icu RZT2H_IRQ13 IRQ_TYPE_EDGE_FALLING>;
 	/*
 	 * PHY2 Reset Configuration:
 	 *
@@ -277,7 +279,8 @@
 			 <RZT2H_PORT_PINMUX(31, 5, 0xf)>, /* ETH2_COL */
 			 <RZT2H_PORT_PINMUX(30, 5, 0x10)>, /* GMAC2_MDC */
 			 <RZT2H_PORT_PINMUX(30, 6, 0x10)>, /* GMAC2_MDIO */
-			 <RZT2H_PORT_PINMUX(31, 0, 0x2)>; /* ETH2_REFCLK */
+			 <RZT2H_PORT_PINMUX(31, 0, 0x2)>, /* ETH2_REFCLK */
+			 <RZT2H_PORT_PINMUX(31, 1, 0x0)>; /* IRQ13 */
 	};
 
 	/*
@@ -305,7 +308,8 @@
 			 <RZT2H_PORT_PINMUX(35, 2, 0xf)>, /* ETH3_COL */
 			 <RZT2H_PORT_PINMUX(26, 1, 0x10)>, /* GMAC1_MDC */
 			 <RZT2H_PORT_PINMUX(26, 2, 0x10)>, /* GMAC1_MDIO */
-			 <RZT2H_PORT_PINMUX(34, 6, 0x2)>; /* ETH3_REFCLK */
+			 <RZT2H_PORT_PINMUX(34, 6, 0x2)>, /* ETH3_REFCLK */
+			 <RZT2H_PORT_PINMUX(27, 2, 0x0)>; /* IRQ3 */
 	};
 
 	/*