diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index cb33a23ab0c1..04ace4c7bd58 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1330,7 +1330,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
 	if (fwnode_property_read_u32(fwnode, "st,bank-ioport", &bank_ioport_nr))
 		bank_ioport_nr = bank_nr;
 
-	bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK;
+	bank->gpio_chip.base = -1;
 
 	bank->gpio_chip.ngpio = npins;
 	bank->gpio_chip.fwnode = fwnode;