diff --git a/tests/lib/devicetree/api/app.overlay b/tests/lib/devicetree/api/app.overlay
index 585008a8837693..64010f0c8ef5aa 100644
--- a/tests/lib/devicetree/api/app.overlay
+++ b/tests/lib/devicetree/api/app.overlay
@@ -415,6 +415,7 @@
 			reg = <0xbbbbcccc 0x1000>;
 			interrupt-controller;
 			#interrupt-cells = <2>;
+			interrupts = <11 0>;
 		};
 
 		/* there should only be one of these */
@@ -422,6 +423,7 @@
 			compatible = "vnd,interrupt-holder";
 			status = "okay";
 			interrupts = <30 3 40 5 60 7>;
+			interrupt-parent = <&test_intc>;
 			interrupt-names = "err", "stat", "done";
 		};
 
diff --git a/tests/lib/devicetree/api/src/main.c b/tests/lib/devicetree/api/src/main.c
index 255357e85e852e..019f5845a38b0c 100644
--- a/tests/lib/devicetree/api/src/main.c
+++ b/tests/lib/devicetree/api/src/main.c
@@ -707,6 +707,26 @@ ZTEST(devicetree_api, test_irq)
 
 	/* DT_IRQN */
 	zassert_equal(DT_IRQN(TEST_I2C_BUS), 6, "");
+	#ifndef CONFIG_MULTI_LEVEL_INTERRUPTS
+		zassert_equal(DT_IRQN(DT_INST(0, DT_DRV_COMPAT)), 30, "");
+	#else
+		zassert_equal(DT_IRQN(DT_INST(0, DT_DRV_COMPAT)),
+			      ((30 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+	#endif
+
+	/* DT_IRQN_BY_IDX */
+#ifndef CONFIG_MULTI_LEVEL_INTERRUPTS
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 0), 30, "");
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 1), 40, "");
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 2), 60, "");
+#else
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 0),
+		      ((30 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 1),
+		      ((40 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+	zassert_equal(DT_IRQN_BY_IDX(DT_INST(0, DT_DRV_COMPAT), 2),
+		      ((60 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+#endif
 
 	/* DT_INST */
 	zassert_equal(DT_NUM_INST_STATUS_OKAY(DT_DRV_COMPAT), 1, "");
@@ -738,7 +758,25 @@ ZTEST(devicetree_api, test_irq)
 	zassert_equal(DT_INST_IRQ(0, priority), 3, "");
 
 	/* DT_INST_IRQN */
+#ifndef CONFIG_MULTI_LEVEL_INTERRUPTS
 	zassert_equal(DT_INST_IRQN(0), 30, "");
+#else
+	zassert_equal(DT_INST_IRQN(0), ((30 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+#endif
+
+	/* DT_INST_IRQN_BY_IDX */
+#ifndef CONFIG_MULTI_LEVEL_INTERRUPTS
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 0), 30, "");
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 1), 40, "");
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 2), 60, "");
+#else
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 0),
+		      ((30 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 1),
+		      ((40 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+	zassert_equal(DT_INST_IRQN_BY_IDX(0, 2),
+		      ((60 + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS) | 11, "");
+#endif
 
 	/* DT_INST_IRQ_HAS_CELL_AT_IDX */
 	zassert_true(DT_INST_IRQ_HAS_CELL_AT_IDX(0, 0, irq), "");
diff --git a/tests/lib/devicetree/api/testcase.yaml b/tests/lib/devicetree/api/testcase.yaml
index d8418201cc485e..105f7c73ebfa53 100644
--- a/tests/lib/devicetree/api/testcase.yaml
+++ b/tests/lib/devicetree/api/testcase.yaml
@@ -8,5 +8,6 @@ tests:
       - qemu_x86
       - qemu_x86_64
       - qemu_cortex_m3
+      - qemu_riscv32
     integration_platforms:
       - native_posix