diff --git a/arch/mips/include/asm/txx9pio.h b/arch/mips/include/asm/txx9pio.h
index 3d6fa9f8d513..c33a97724400 100644
--- a/arch/mips/include/asm/txx9pio.h
+++ b/arch/mips/include/asm/txx9pio.h
@@ -23,7 +23,6 @@ struct txx9_pio_reg {
 	__u32 maskext;
 };
 
-int txx9_gpio_init(unsigned long baseaddr,
-		   unsigned int base, unsigned int num);
+int txx9_gpio_init(unsigned long baseaddr, unsigned int num);
 
 #endif /* __ASM_TXX9PIO_H */
diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c
index 96ac40d20c23..b2e73263d94c 100644
--- a/arch/mips/kernel/gpio_txx9.c
+++ b/arch/mips/kernel/gpio_txx9.c
@@ -76,13 +76,12 @@ static struct gpio_chip txx9_gpio_chip = {
 	.label = "TXx9",
 };
 
-int __init txx9_gpio_init(unsigned long baseaddr,
-			  unsigned int base, unsigned int num)
+int __init txx9_gpio_init(unsigned long baseaddr, unsigned int num)
 {
 	txx9_pioptr = ioremap(baseaddr, sizeof(struct txx9_pio_reg));
 	if (!txx9_pioptr)
 		return -ENODEV;
-	txx9_gpio_chip.base = base;
+	txx9_gpio_chip.base = -1;
 	txx9_gpio_chip.ngpio = num;
 	return gpiochip_add_data(&txx9_gpio_chip, NULL);
 }
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 75674b4cc91d..e904217a5fb2 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -178,7 +178,7 @@ static void __init rbtx4927_gpio_init(void)
 
 static void __init rbtx4927_arch_init(void)
 {
-	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, 0, TX4927_NUM_PIO);
+	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, TX4927_NUM_PIO);
 
 	rbtx4927_gpio_init();
 
@@ -187,7 +187,7 @@ static void __init rbtx4927_arch_init(void)
 
 static void __init rbtx4937_arch_init(void)
 {
-	txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, TX4938_NUM_PIO);
+	txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, TX4938_NUM_PIO);
 
 	rbtx4927_gpio_init();