diff --git a/drivers/pinctrl/renesas/sh_pfc.h b/drivers/pinctrl/renesas/sh_pfc.h
index da05eec97acc323c64674a672d7321530d9fafa6..f33e9f5e83a464e0dd72dac6dcd9397339f5703e 100644
--- a/drivers/pinctrl/renesas/sh_pfc.h
+++ b/drivers/pinctrl/renesas/sh_pfc.h
@@ -161,7 +161,7 @@ struct pinmux_drive_reg_field {
 
 struct pinmux_drive_reg {
 	u32 reg;
-	const struct pinmux_drive_reg_field fields[8];
+	const struct pinmux_drive_reg_field fields[10];
 };
 
 #define PINMUX_DRIVE_REG(name, r) \