diff --git a/core/include/kernel/interrupt.h b/core/include/kernel/interrupt.h
index c5b66a9b83a..e1942b90ab3 100644
--- a/core/include/kernel/interrupt.h
+++ b/core/include/kernel/interrupt.h
@@ -158,27 +158,6 @@ static inline int dt_get_irq(const void *fdt, int node)
 }
 #endif
 
-struct itr_handler *itr_alloc_add_type_prio(size_t it, itr_handler_t handler,
-					    uint32_t flags, void *data,
-					    uint32_t type, uint32_t prio);
-void itr_free(struct itr_handler *hdl);
-void itr_add_type_prio(struct itr_handler *handler, uint32_t type,
-		       uint32_t prio);
-void itr_enable(size_t it);
-void itr_disable(size_t it);
-/* raise the Peripheral Interrupt corresponding to the interrupt ID */
-void itr_raise_pi(size_t it);
-/*
- * raise the Software Generated Interrupt corresponding to the interrupt ID,
- * the cpu_mask represents which cpu interface to forward.
- */
-void itr_raise_sgi(size_t it, uint8_t cpu_mask);
-/*
- * let corresponding interrupt forward to the cpu interface
- * according to the cpu_mask.
- */
-void itr_set_affinity(size_t it, uint8_t cpu_mask);
-
 /*
  * __weak overridable function which is called when a secure interrupt is
  * received. The default function calls panic() immediately, platforms which
@@ -186,19 +165,6 @@ void itr_set_affinity(size_t it, uint8_t cpu_mask);
  */
 void interrupt_main_handler(void);
 
-static inline void itr_add(struct itr_handler *handler)
-{
-	itr_add_type_prio(handler, IRQ_TYPE_NONE, 0);
-}
-
-static inline struct itr_handler *itr_alloc_add(size_t it,
-						itr_handler_t handler,
-						uint32_t flags, void *data)
-{
-	return itr_alloc_add_type_prio(it, handler, flags, data, IRQ_TYPE_NONE,
-				       0);
-}
-
 /*
  * Interrupt controller chip API functions
  */
diff --git a/core/kernel/interrupt.c b/core/kernel/interrupt.c
index 9fbc9b2b009..a49bbf2d106 100644
--- a/core/kernel/interrupt.c
+++ b/core/kernel/interrupt.c
@@ -65,72 +65,6 @@ int dt_get_irq_type_prio(const void *fdt, int node, uint32_t *type,
 }
 #endif
 
-struct itr_handler *itr_alloc_add_type_prio(size_t it, itr_handler_t handler,
-					    uint32_t flags, void *data,
-					    uint32_t type, uint32_t prio)
-{
-	struct itr_handler *hdl = calloc(1, sizeof(*hdl));
-
-	if (hdl) {
-		hdl->it = it;
-		hdl->handler = handler;
-		hdl->flags = flags;
-		hdl->data = data;
-		itr_add_type_prio(hdl, type, prio);
-	}
-
-	return hdl;
-}
-
-void itr_free(struct itr_handler *hdl)
-{
-	if (!hdl)
-		return;
-
-	itr_main_chip->ops->disable(itr_main_chip, hdl->it);
-
-	SLIST_REMOVE(&itr_main_chip->handlers, hdl, itr_handler, link);
-	free(hdl);
-}
-
-void itr_add_type_prio(struct itr_handler *h, uint32_t type, uint32_t prio)
-{
-	struct itr_handler __maybe_unused *hdl = NULL;
-
-	SLIST_FOREACH(hdl, &itr_main_chip->handlers, link)
-		if (hdl->it == h->it)
-			assert((hdl->flags & ITRF_SHARED) &&
-			       (h->flags & ITRF_SHARED));
-
-	itr_main_chip->ops->add(itr_main_chip, h->it, type, prio);
-	SLIST_INSERT_HEAD(&itr_main_chip->handlers, h, link);
-}
-
-void itr_enable(size_t it)
-{
-	itr_main_chip->ops->enable(itr_main_chip, it);
-}
-
-void itr_disable(size_t it)
-{
-	itr_main_chip->ops->disable(itr_main_chip, it);
-}
-
-void itr_raise_pi(size_t it)
-{
-	itr_main_chip->ops->raise_pi(itr_main_chip, it);
-}
-
-void itr_raise_sgi(size_t it, uint8_t cpu_mask)
-{
-	itr_main_chip->ops->raise_sgi(itr_main_chip, it, cpu_mask);
-}
-
-void itr_set_affinity(size_t it, uint8_t cpu_mask)
-{
-	itr_main_chip->ops->set_affinity(itr_main_chip, it, cpu_mask);
-}
-
 /* This function is supposed to be overridden in platform specific code */
 void __weak __noreturn interrupt_main_handler(void)
 {