diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index e847e90f436d73ca4e4f2d1f937f7c41e89c4a47..33e61a136bbc5e635cd5b67074e660b50e8bc378 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -66,6 +66,8 @@ void mtk_merge_stop(struct device *dev);
 void mtk_merge_advance_config(struct device *dev, unsigned int l_w, unsigned int r_w,
 			      unsigned int h, unsigned int vrefresh, unsigned int bpc,
 			      struct cmdq_pkt *cmdq_pkt);
+void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt);
+void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt);
 
 void mtk_ovl_bgclr_in_on(struct device *dev);
 void mtk_ovl_bgclr_in_off(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
index 40da0555416d97c8aaaa44d10b376c45c5532055..c7af5ccab91660179c3359413563fc8096670629 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
@@ -67,17 +67,29 @@ struct mtk_disp_merge {
 };
 
 void mtk_merge_start(struct device *dev)
+{
+	mtk_merge_start_cmdq(dev, NULL);
+}
+
+void mtk_merge_stop(struct device *dev)
+{
+	mtk_merge_stop_cmdq(dev, NULL);
+}
+
+void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 {
 	struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
-	writel(MERGE_EN, priv->regs + DISP_REG_MERGE_CTRL);
+	mtk_ddp_write(cmdq_pkt, 1, &priv->cmdq_reg, priv->regs,
+		      DISP_REG_MERGE_CTRL);
 }
 
-void mtk_merge_stop(struct device *dev)
+void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 {
 	struct mtk_disp_merge *priv = dev_get_drvdata(dev);
 
-	writel(0x0, priv->regs + DISP_REG_MERGE_CTRL);
+	mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
+		      DISP_REG_MERGE_CTRL);
 }
 
 static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv,