--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
+++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
@@ -662,6 +662,7 @@ int mtk_moore_pinctrl_probe(struct platf
 	}
 
 	hw->nbase = hw->soc->nbase_names;
+	spin_lock_init(&hw->lock);
 
 	/* Copy from internal struct mtk_pin_desc to register to the core */
 	pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -55,11 +55,16 @@ static u32 mtk_r32(struct mtk_pinctrl *p
 void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set)
 {
 	u32 val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pctl->lock, flags);
 
 	val = mtk_r32(pctl, i, reg);
 	val &= ~mask;
 	val |= set;
 	mtk_w32(pctl, i, reg, val);
+
+	spin_unlock_irqrestore(&pctl->lock, flags);
 }
 
 static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,