diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c
index e9278f6d67aa..2f87075e9d6f 100644
--- a/arch/arm/mach-ux500/cpu-db5500.c
+++ b/arch/arm/mach-ux500/cpu-db5500.c
@@ -14,6 +14,7 @@
 #include <mach/hardware.h>
 #include <mach/devices.h>
 #include <mach/setup.h>
+#include <mach/irqs.h>
 
 static struct map_desc u5500_io_desc[] __initdata = {
 	__IO_DEV_DESC(U5500_GPIO0_BASE, SZ_4K),
@@ -24,6 +25,90 @@ static struct map_desc u5500_io_desc[] __initdata = {
 	__IO_DEV_DESC(U5500_PRCMU_BASE, SZ_4K),
 };
 
+static struct resource mbox0_resources[] = {
+	{
+		.name = "mbox_peer",
+		.start = U5500_MBOX0_PEER_START,
+		.end = U5500_MBOX0_PEER_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_local",
+		.start = U5500_MBOX0_LOCAL_START,
+		.end = U5500_MBOX0_LOCAL_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_irq",
+		.start = MBOX_PAIR0_VIRT_IRQ,
+		.end = MBOX_PAIR0_VIRT_IRQ,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource mbox1_resources[] = {
+	{
+		.name = "mbox_peer",
+		.start = U5500_MBOX1_PEER_START,
+		.end = U5500_MBOX1_PEER_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_local",
+		.start = U5500_MBOX1_LOCAL_START,
+		.end = U5500_MBOX1_LOCAL_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_irq",
+		.start = MBOX_PAIR1_VIRT_IRQ,
+		.end = MBOX_PAIR1_VIRT_IRQ,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource mbox2_resources[] = {
+	{
+		.name = "mbox_peer",
+		.start = U5500_MBOX2_PEER_START,
+		.end = U5500_MBOX2_PEER_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_local",
+		.start = U5500_MBOX2_LOCAL_START,
+		.end = U5500_MBOX2_LOCAL_END,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "mbox_irq",
+		.start = MBOX_PAIR2_VIRT_IRQ,
+		.end = MBOX_PAIR2_VIRT_IRQ,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device mbox0_device = {
+	.id = 0,
+	.name = "mbox",
+	.resource = mbox0_resources,
+	.num_resources = ARRAY_SIZE(mbox0_resources),
+};
+
+static struct platform_device mbox1_device = {
+	.id = 1,
+	.name = "mbox",
+	.resource = mbox1_resources,
+	.num_resources = ARRAY_SIZE(mbox1_resources),
+};
+
+static struct platform_device mbox2_device = {
+	.id = 2,
+	.name = "mbox",
+	.resource = mbox2_resources,
+	.num_resources = ARRAY_SIZE(mbox2_resources),
+};
+
 static struct platform_device *u5500_platform_devs[] __initdata = {
 	&u5500_gpio_devs[0],
 	&u5500_gpio_devs[1],
@@ -33,6 +118,9 @@ static struct platform_device *u5500_platform_devs[] __initdata = {
 	&u5500_gpio_devs[5],
 	&u5500_gpio_devs[6],
 	&u5500_gpio_devs[7],
+	&mbox0_device,
+	&mbox1_device,
+	&mbox2_device,
 };
 
 void __init u5500_map_io(void)
diff --git a/arch/arm/mach-ux500/include/mach/db5500-regs.h b/arch/arm/mach-ux500/include/mach/db5500-regs.h
index 545c80fc8024..3eafc0e24ba5 100644
--- a/arch/arm/mach-ux500/include/mach/db5500-regs.h
+++ b/arch/arm/mach-ux500/include/mach/db5500-regs.h
@@ -100,4 +100,18 @@
 #define U5500_GPIOBANK6_BASE	(U5500_GPIO4_BASE + 0x80)
 #define U5500_GPIOBANK7_BASE	(U5500_GPIO4_BASE + 0x100)
 
+#define U5500_MBOX_BASE		(U5500_MODEM_BASE + 0xFFD1000)
+#define U5500_MBOX0_PEER_START	(U5500_MBOX_BASE + 0x40)
+#define U5500_MBOX0_PEER_END	(U5500_MBOX_BASE + 0x5F)
+#define U5500_MBOX0_LOCAL_START	(U5500_MBOX_BASE + 0x60)
+#define U5500_MBOX0_LOCAL_END	(U5500_MBOX_BASE + 0x7F)
+#define U5500_MBOX1_PEER_START	(U5500_MBOX_BASE + 0x80)
+#define U5500_MBOX1_PEER_END	(U5500_MBOX_BASE + 0x9F)
+#define U5500_MBOX1_LOCAL_START	(U5500_MBOX_BASE + 0xA0)
+#define U5500_MBOX1_LOCAL_END	(U5500_MBOX_BASE + 0xBF)
+#define U5500_MBOX2_PEER_START	(U5500_MBOX_BASE + 0x00)
+#define U5500_MBOX2_PEER_END	(U5500_MBOX_BASE + 0x1F)
+#define U5500_MBOX2_LOCAL_START	(U5500_MBOX_BASE + 0x20)
+#define U5500_MBOX2_LOCAL_END	(U5500_MBOX_BASE + 0x3F)
+
 #endif
diff --git a/arch/arm/mach-ux500/include/mach/irqs-db5500.h b/arch/arm/mach-ux500/include/mach/irqs-db5500.h
index 6fbfe5e2065a..bfa123dbec3b 100644
--- a/arch/arm/mach-ux500/include/mach/irqs-db5500.h
+++ b/arch/arm/mach-ux500/include/mach/irqs-db5500.h
@@ -61,6 +61,7 @@
 #define IRQ_DB5500_SDMMC0		(IRQ_SHPI_START + 60)
 #define IRQ_DB5500_HSEM			(IRQ_SHPI_START + 61)
 #define IRQ_DB5500_SBAG			(IRQ_SHPI_START + 63)
+#define IRQ_DB5500_MODEM		(IRQ_SHPI_START + 65)
 #define IRQ_DB5500_SPI1			(IRQ_SHPI_START + 96)
 #define IRQ_DB5500_MSP2			(IRQ_SHPI_START + 98)
 #define IRQ_DB5500_SRPTIMER		(IRQ_SHPI_START + 101)
diff --git a/arch/arm/mach-ux500/include/mach/irqs.h b/arch/arm/mach-ux500/include/mach/irqs.h
index 0d552d9c9c00..693aa57de88d 100644
--- a/arch/arm/mach-ux500/include/mach/irqs.h
+++ b/arch/arm/mach-ux500/include/mach/irqs.h
@@ -84,6 +84,19 @@
 #include <mach/irqs-board-mop500.h>
 #endif
 
-#define NR_IRQS				IRQ_BOARD_END
+/*
+ * After the board specific IRQ:s we reserve a range of IRQ:s in which virtual
+ * IRQ:s representing modem IRQ:s can be allocated
+ */
+#define IRQ_MODEM_EVENTS_BASE (IRQ_BOARD_END + 1)
+#define IRQ_MODEM_EVENTS_NBR 72
+#define IRQ_MODEM_EVENTS_END (IRQ_MODEM_EVENTS_BASE + IRQ_MODEM_EVENTS_NBR)
+
+/* List of virtual IRQ:s that are allocated from the range above */
+#define MBOX_PAIR0_VIRT_IRQ (IRQ_MODEM_EVENTS_BASE + 43)
+#define MBOX_PAIR1_VIRT_IRQ (IRQ_MODEM_EVENTS_BASE + 45)
+#define MBOX_PAIR2_VIRT_IRQ (IRQ_MODEM_EVENTS_BASE + 41)
+
+#define NR_IRQS				IRQ_MODEM_EVENTS_END
 
 #endif /* ASM_ARCH_IRQS_H */