diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
index 8d7dfb326b9e..5dcb01923162 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
@@ -2471,6 +2471,9 @@ static int npcm8xx_gpio_fw(struct npcm8xx_pinctrl *pctrl)
 		if (ret < 0)
 			return dev_err_probe(dev, ret, "Failed to retrieve IRQ for bank %u\n", id);
 
+		iowrite32(0, pctrl->gpio_bank[id].base + NPCM8XX_GP_N_EVEN);
+		iowrite32(0xffffffff, pctrl->gpio_bank[id].base + NPCM8XX_GP_N_EVST);
+
 		pctrl->gpio_bank[id].irq = ret;
 		pctrl->gpio_bank[id].irq_chip = npcmgpio_irqchip;
 		pctrl->gpio_bank[id].irqbase = id * NPCM8XX_GPIO_PER_BANK;