diff --git a/drivers/interrupt_controller/intc_plic.c b/drivers/interrupt_controller/intc_plic.c
index d7958ad9b4a15b..11d41e2f191a1a 100644
--- a/drivers/interrupt_controller/intc_plic.c
+++ b/drivers/interrupt_controller/intc_plic.c
@@ -22,9 +22,9 @@
 #include <zephyr/irq.h>
 
 #define PLIC_MAX_PRIO	DT_INST_PROP(0, riscv_max_priority)
-#define PLIC_PRIO	DT_INST_REG_ADDR_BY_NAME(0, prio)
-#define PLIC_IRQ_EN	DT_INST_REG_ADDR_BY_NAME(0, irq_en)
-#define PLIC_REG	DT_INST_REG_ADDR_BY_NAME(0, reg)
+#define PLIC_PRIO	DT_INST_REG_ADDR_BY_NAME_U64(0, prio)
+#define PLIC_IRQ_EN	DT_INST_REG_ADDR_BY_NAME_U64(0, irq_en)
+#define PLIC_REG	DT_INST_REG_ADDR_BY_NAME_U64(0, reg)
 
 #define PLIC_IRQS        (CONFIG_NUM_IRQS - CONFIG_2ND_LVL_ISR_TBL_OFFSET)
 #define PLIC_EN_SIZE     ((PLIC_IRQS >> 5) + 1)
diff --git a/drivers/timer/riscv_machine_timer.c b/drivers/timer/riscv_machine_timer.c
index f4ac7afe4d43ff..7ddbc359dfa7dd 100644
--- a/drivers/timer/riscv_machine_timer.c
+++ b/drivers/timer/riscv_machine_timer.c
@@ -67,9 +67,9 @@
 #define DT_DRV_COMPAT scr_machine_timer
 #define MTIMER_HAS_DIVIDER
 
-#define MTIMEDIV_REG	(DT_INST_REG_ADDR(0) + 4)
-#define MTIME_REG	(DT_INST_REG_ADDR(0) + 8)
-#define MTIMECMP_REG	(DT_INST_REG_ADDR(0) + 16)
+#define MTIMEDIV_REG	(DT_INST_REG_ADDR_U64(0) + 4)
+#define MTIME_REG	(DT_INST_REG_ADDR_U64(0) + 8)
+#define MTIMECMP_REG	(DT_INST_REG_ADDR_U64(0) + 16)
 #define TIMER_IRQN	DT_INST_IRQN(0)
 #endif
 
diff --git a/include/zephyr/sys/device_mmio.h b/include/zephyr/sys/device_mmio.h
index 887ea7ee18e706..bc28c3e91e448b 100644
--- a/include/zephyr/sys/device_mmio.h
+++ b/include/zephyr/sys/device_mmio.h
@@ -116,12 +116,12 @@ struct z_device_mmio_rom {
 
 #define Z_DEVICE_MMIO_ROM_INITIALIZER(node_id) \
 	{ \
-		.addr = DT_REG_ADDR(node_id) \
+		.addr = (mm_reg_t)DT_REG_ADDR_U64(node_id) \
 	}
 
 #define Z_DEVICE_MMIO_NAMED_ROM_INITIALIZER(name, node_id) \
 	{ \
-		.addr = DT_REG_ADDR_BY_NAME(node_id, name) \
+		.addr = (mm_reg_t)DT_REG_ADDR_BY_NAME_U64(node_id, name) \
 	}
 
 #endif /* DEVICE_MMIO_IS_IN_RAM */