diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 6f762097557af046c725c53fc6e31d9fcb8e42b7..04b31f0c6b34a3ad9124d7593bd2f178e8e83c15 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -1468,6 +1468,12 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	struct rzg2l_pinctrl *pctrl;
 	int ret;
 
+	BUILD_BUG_ON(ARRAY_SIZE(rzg2l_gpio_configs) * RZG2L_PINS_PER_PORT >
+		     ARRAY_SIZE(rzg2l_gpio_names));
+
+	BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
+		     ARRAY_SIZE(rzg2l_gpio_names));
+
 	pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
 	if (!pctrl)
 		return -ENOMEM;
@@ -1531,7 +1537,7 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.port_pin_configs = rzg2l_gpio_configs,
 	.n_ports = ARRAY_SIZE(rzg2l_gpio_configs),
 	.dedicated_pins = rzg2l_dedicated_pins.common,
-	.n_port_pins = ARRAY_SIZE(rzg2l_gpio_names),
+	.n_port_pins = ARRAY_SIZE(rzg2l_gpio_configs) * RZG2L_PINS_PER_PORT,
 	.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
 		ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
 };