diff --git a/arch/arm/include/asm/arch-hi6220/gpio.h b/arch/arm/include/asm/arch-hi6220/gpio.h
index 4fafaef..29ace17 100644
--- a/arch/arm/include/asm/arch-hi6220/gpio.h
+++ b/arch/arm/include/asm/arch-hi6220/gpio.h
@@ -21,7 +21,7 @@ struct gpio_bank {
 /* Information about a GPIO bank */
 struct hikey_gpio_platdata {
 	int bank_index;
-	unsigned int base;     /* address of registers in physical memory */
+	ulong base;     /* address of registers in physical memory */
 };
 
 #endif /* _HI6220_GPIO_H_ */