--- a/arch/arm/mach-cns3xxx/cns3420vb.c
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -247,6 +247,10 @@ static void __init cns3420_init(void)
 
 	cns3xxx_ahci_init();
 	cns3xxx_sdhci_init();
+	cns3xxx_gpio_init( 0, 32, CNS3XXX_GPIOA_BASE_VIRT, IRQ_CNS3XXX_GPIOA,
+		NR_IRQS_CNS3XXX);
+	cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT, IRQ_CNS3XXX_GPIOB,
+		NR_IRQS_CNS3XXX + 32);
 
 	pm_power_off = cns3xxx_power_off;
 }
@@ -262,7 +266,7 @@ static struct map_desc cns3420_io_desc[]
 
 static void __init cns3420_map_io(void)
 {
-	cns3xxx_map_io();
+	cns3xxx_common_init();
 	cns3xxx_pcie_iotable_init();
 	iotable_init(cns3420_io_desc, ARRAY_SIZE(cns3420_io_desc));
 
--- a/arch/arm/mach-cns3xxx/core.c
+++ b/arch/arm/mach-cns3xxx/core.c
@@ -82,7 +82,7 @@ static struct map_desc cns3xxx_io_desc[]
 	},
 };
 
-void __init cns3xxx_map_io(void)
+void __init cns3xxx_common_init(void)
 {
 	iotable_init(cns3xxx_io_desc, ARRAY_SIZE(cns3xxx_io_desc));
 }
--- a/arch/arm/mach-cns3xxx/core.h
+++ b/arch/arm/mach-cns3xxx/core.h
@@ -22,7 +22,7 @@ void __init cns3xxx_l2x0_init(void);
 static inline void cns3xxx_l2x0_init(void) {}
 #endif /* CONFIG_CACHE_L2X0 */
 
-void __init cns3xxx_map_io(void);
+void __init cns3xxx_common_init(void);
 void __init cns3xxx_init_irq(void);
 int  __init cns3xxx_pcie_init(void);
 void cns3xxx_power_off(void);
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -361,6 +361,8 @@ config ARCH_CNS3XXX
 	bool "Cavium Networks CNS3XXX family"
 	select ARM_GIC
 	select CPU_V6K
+	select ARCH_REQUIRE_GPIOLIB
+	select GENERIC_IRQ_CHIP
 	select GENERIC_CLOCKEVENTS
 	select MIGHT_HAVE_CACHE_L2X0
 	select MIGHT_HAVE_PCI
--- a/arch/arm/mach-cns3xxx/Makefile
+++ b/arch/arm/mach-cns3xxx/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ARCH_CNS3XXX)		+= core.o pm.o devices.o
+obj-$(CONFIG_ARCH_CNS3XXX)		+= core.o gpio.o pm.o devices.o
 obj-$(CONFIG_PCI)			+= pcie.o
 obj-$(CONFIG_MACH_CNS3420VB)		+= cns3420vb.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o cns3xxx_fiq.o
--- a/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
+++ b/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
@@ -627,7 +627,7 @@ int cns3xxx_cpu_clock(void);
 
 #if !defined(NR_IRQS) || (NR_IRQS < NR_IRQS_CNS3XXX)
 #undef NR_IRQS
-#define NR_IRQS				NR_IRQS_CNS3XXX
+#define NR_IRQS				(NR_IRQS_CNS3XXX + 64)
 #endif
 
 #endif	/* __MACH_BOARD_CNS3XXX_H */