diff --git a/arch/mips/include/asm/mach-loongson/gpio.h b/arch/mips/include/asm/mach-loongson/gpio.h
index 0fd06bf..a27c003 100644
--- a/arch/mips/include/asm/mach-loongson/gpio.h
+++ b/arch/mips/include/asm/mach-loongson/gpio.h
@@ -14,7 +14,11 @@
 #define	__STLS2F_GPIO_H
 
 #ifdef CONFIG_GENERIC_GPIO
+#ifdef CONFIG_DEXXON_GDIUM
+#define ARCH_NR_GPIOS 256
+#else
 #define ARCH_NR_GPIOS 4
+#endif
 #include <asm-generic/gpio.h>
 
 extern void gpio_set_value(unsigned gpio, int value);
diff --git a/arch/mips/loongson/common/gpio.c b/arch/mips/loongson/common/gpio.c
index a8645f8..e8a0ffa 100644
--- a/arch/mips/loongson/common/gpio.c
+++ b/arch/mips/loongson/common/gpio.c
@@ -19,6 +19,7 @@
 #include <loongson.h>
 #include <linux/gpio.h>
 
+#define STLS2F_N_GPIO		4
 #define STLS2F_GPIO_IN_OFFSET	16
 
 static DEFINE_SPINLOCK(gpio_lock);
@@ -28,7 +29,7 @@ int gpio_get_value(unsigned gpio)
 	u32 val;
 	u32 mask;
 
-	if (gpio >= ARCH_NR_GPIOS)
+	if (gpio >= STLS2F_N_GPIO)
 		return __gpio_get_value(gpio);
 
 	mask = 1 << (gpio + STLS2F_GPIO_IN_OFFSET);
@@ -45,7 +46,7 @@ void gpio_set_value(unsigned gpio, int state)
 	u32 val;
 	u32 mask;
 
-	if (gpio >= ARCH_NR_GPIOS) {
+	if (gpio >= STLS2F_N_GPIO) {
 		__gpio_set_value(gpio, state);
 		return ;
 	}
@@ -65,7 +66,7 @@ EXPORT_SYMBOL(gpio_set_value);
 
 int gpio_cansleep(unsigned gpio)
 {
-	if (gpio < ARCH_NR_GPIOS)
+	if (gpio < STLS2F_N_GPIO)
 		return 0;
 	else
 		return __gpio_cansleep(gpio);
@@ -77,7 +78,7 @@ static int ls2f_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
 	u32 temp;
 	u32 mask;
 
-	if (gpio >= ARCH_NR_GPIOS)
+	if (gpio >= STLS2F_N_GPIO)
 		return -EINVAL;
 
 	spin_lock(&gpio_lock);
@@ -96,7 +97,7 @@ static int ls2f_gpio_direction_output(struct gpio_chip *chip,
 	u32 temp;
 	u32 mask;
 
-	if (gpio >= ARCH_NR_GPIOS)
+	if (gpio >= STLS2F_N_GPIO)
 		return -EINVAL;
 
 	gpio_set_value(gpio, level);
@@ -128,7 +129,7 @@ static struct gpio_chip ls2f_chip = {
 	.direction_output       = ls2f_gpio_direction_output,
 	.set                    = ls2f_gpio_set_value,
 	.base                   = 0,
-	.ngpio                  = ARCH_NR_GPIOS,
+	.ngpio                  = STLS2F_N_GPIO,
 };
 
 static int __init ls2f_gpio_setup(void)