diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 76a4260f20f3..35086310b81d 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -337,7 +337,7 @@ static int pcs_enable(struct pinctrl_dev *pctldev, unsigned fselector,
 		vals = &func->vals[i];
 		val = pcs->read(vals->reg);
 		val &= ~pcs->fmask;
-		val |= vals->val;
+		val |= (vals->val & pcs->fmask);
 		pcs->write(val, vals->reg);
 	}