diff --git a/drivers/interrupt_controller/intc_plic.c b/drivers/interrupt_controller/intc_plic.c
index 20422f2343..51ce176939 100644
--- a/drivers/interrupt_controller/intc_plic.c
+++ b/drivers/interrupt_controller/intc_plic.c
@@ -45,6 +45,12 @@
 #define PLIC_REG_SIZE 32
 #define PLIC_REG_MASK BIT_MASK(LOG2(PLIC_REG_SIZE))
 
+#ifdef CONFIG_TEST_INTC_PLIC
+#define INTC_PLIC_STATIC
+#else
+#define INTC_PLIC_STATIC static inline
+#endif
+
 typedef void (*riscv_plic_irq_config_func_t)(void);
 struct plic_config {
 	mem_addr_t prio;
@@ -59,12 +65,12 @@ struct plic_config {
 static uint32_t save_irq;
 static const struct device *save_dev;
 
-static inline uint32_t local_irq_to_reg_index(uint32_t local_irq)
+INTC_PLIC_STATIC uint32_t local_irq_to_reg_index(uint32_t local_irq)
 {
 	return local_irq >> LOG2(PLIC_REG_SIZE);
 }
 
-static inline uint32_t local_irq_to_reg_offset(uint32_t local_irq)
+INTC_PLIC_STATIC uint32_t local_irq_to_reg_offset(uint32_t local_irq)
 {
 	return local_irq_to_reg_index(local_irq) * sizeof(uint32_t);
 }
diff --git a/tests/drivers/interrupt_controller/intc_plic/CMakeLists.txt b/tests/drivers/interrupt_controller/intc_plic/CMakeLists.txt
new file mode 100644
index 0000000000..59fd0a3bb2
--- /dev/null
+++ b/tests/drivers/interrupt_controller/intc_plic/CMakeLists.txt
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(intc_plic)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})
diff --git a/tests/drivers/interrupt_controller/intc_plic/Kconfig b/tests/drivers/interrupt_controller/intc_plic/Kconfig
new file mode 100644
index 0000000000..53ccc57348
--- /dev/null
+++ b/tests/drivers/interrupt_controller/intc_plic/Kconfig
@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Antmicro
+# SPDX-License-Identifier: Apache-2.0
+
+config TEST_INTC_PLIC
+	bool
+	default y
+	help
+	   Declare some intc_plic.c functions in the global scope for verification.
+
+source "Kconfig"
diff --git a/tests/drivers/interrupt_controller/intc_plic/prj.conf b/tests/drivers/interrupt_controller/intc_plic/prj.conf
new file mode 100644
index 0000000000..9467c29268
--- /dev/null
+++ b/tests/drivers/interrupt_controller/intc_plic/prj.conf
@@ -0,0 +1 @@
+CONFIG_ZTEST=y
diff --git a/tests/drivers/interrupt_controller/intc_plic/src/main.c b/tests/drivers/interrupt_controller/intc_plic/src/main.c
new file mode 100644
index 0000000000..631e0e8915
--- /dev/null
+++ b/tests/drivers/interrupt_controller/intc_plic/src/main.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2023 Antmicro
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdint.h>
+#include <zephyr/ztest.h>
+
+uint32_t local_irq_to_reg_index(uint32_t local_irq);
+uint32_t local_irq_to_reg_offset(uint32_t local_irq);
+
+ZTEST_SUITE(intc_plic, NULL, NULL, NULL, NULL, NULL);
+
+/* Test calculating the register index from a local IRQ number */
+ZTEST(intc_plic, test_local_irq_to_reg_index)
+{
+	zassert_equal(0, local_irq_to_reg_index(0x1f));
+	zassert_equal(1, local_irq_to_reg_index(0x20));
+	zassert_equal(1, local_irq_to_reg_index(0x3f));
+	zassert_equal(2, local_irq_to_reg_index(0x40));
+}
+
+/* Test calculating the register offset from a local IRQ number */
+ZTEST(intc_plic, test_local_irq_to_reg_offset)
+{
+	zassert_equal(0, local_irq_to_reg_offset(0x1f));
+	zassert_equal(4, local_irq_to_reg_offset(0x20));
+	zassert_equal(4, local_irq_to_reg_offset(0x3f));
+	zassert_equal(8, local_irq_to_reg_offset(0x40));
+}
diff --git a/tests/drivers/interrupt_controller/intc_plic/testcase.yaml b/tests/drivers/interrupt_controller/intc_plic/testcase.yaml
new file mode 100644
index 0000000000..11c1f74fa3
--- /dev/null
+++ b/tests/drivers/interrupt_controller/intc_plic/testcase.yaml
@@ -0,0 +1,7 @@
+tests:
+  drivers.interrupt_controller.intc_plic:
+    tags:
+      - drivers
+      - interrupt
+      - plic
+    platform_allow: qemu_riscv64