diff --git a/drivers/clk/mediatek/clk-apmixed.c b/drivers/clk/mediatek/clk-apmixed.c
index f126da693a7ff..60e34f124250d 100644
--- a/drivers/clk/mediatek/clk-apmixed.c
+++ b/drivers/clk/mediatek/clk-apmixed.c
@@ -100,4 +100,13 @@ struct clk_hw *mtk_clk_register_ref2usb_tx(const char *name,
 }
 EXPORT_SYMBOL_GPL(mtk_clk_register_ref2usb_tx);
 
+void mtk_clk_unregister_ref2usb_tx(struct clk_hw *hw)
+{
+	struct mtk_ref2usb_tx *tx = to_mtk_ref2usb_tx(hw);
+
+	clk_hw_unregister(hw);
+	kfree(tx);
+}
+EXPORT_SYMBOL_GPL(mtk_clk_unregister_ref2usb_tx);
+
 MODULE_LICENSE("GPL");
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 1b95c484d5aa4..62d650045cbaf 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -188,6 +188,7 @@ void mtk_free_clk_data(struct clk_hw_onecell_data *clk_data);
 
 struct clk_hw *mtk_clk_register_ref2usb_tx(const char *name,
 			const char *parent_name, void __iomem *reg);
+void mtk_clk_unregister_ref2usb_tx(struct clk_hw *hw);
 
 struct mtk_clk_desc {
 	const struct mtk_gate *clks;