diff --git a/drivers/pci/host/pcie-dw-rockchip.c b/drivers/pci/host/pcie-dw-rockchip.c
index faf3fecb3304..a4f7aeafbb9b 100644
--- a/drivers/pci/host/pcie-dw-rockchip.c
+++ b/drivers/pci/host/pcie-dw-rockchip.c
@@ -992,6 +992,7 @@ rk_pcie_handle_dma_interrupt(struct rk_pcie *rk_pcie)
 		return;
 
 	obj->dma_free = true;
+	obj->irq_num++;
 
 	if (list_empty(&obj->tbl_list)) {
 		if (obj->dma_free &&
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 74f861b10893..894fe99d7edf 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -724,8 +724,10 @@ rk_pcie_handle_dma_interrupt(struct rockchip_pcie *rockchip)
 
 	WARN_ONCE(!(dma_status & 0x3), "dma_status 0x%x\n", dma_status);
 
-	if (dma_status & (1 << 0))
+	if (dma_status & (1 << 0)) {
+		obj->irq_num++;
 		obj->dma_free = true;
+	}
 
 	if (list_empty(&obj->tbl_list)) {
 		if (obj->dma_free &&
@@ -1446,6 +1448,8 @@ static ssize_t pcie_reset_ep_store(struct device *dev,
 	struct rockchip_pcie *rockchip = dev_get_drvdata(dev);
 	struct dma_trx_obj *obj = rockchip->dma_obj;
 
+	dev_info(dev, "loop_cout = %d\n", obj->loop_count);
+
 	err = kstrtou32(buf, 10, &val);
 	if (err)
 		return err;
diff --git a/drivers/pci/host/rockchip-pcie-dma.c b/drivers/pci/host/rockchip-pcie-dma.c
index b56f628cd500..9f7fe96d2a01 100644
--- a/drivers/pci/host/rockchip-pcie-dma.c
+++ b/drivers/pci/host/rockchip-pcie-dma.c
@@ -606,6 +606,41 @@ free_table:
 	return -ENOMEM;
 }
 
+#ifdef CONFIG_DEBUG_FS
+static int rk_pcie_debugfs_trx_show(struct seq_file *s, void *v)
+{
+	struct dma_trx_obj *dma_obj = s->private;
+	bool list = list_empty(&dma_obj->tbl_list);
+
+	seq_printf(s, "irq_num = %ld, loop_count = %d,",
+			dma_obj->irq_num, dma_obj->loop_count);
+	seq_printf(s, "loop_threshold = %d,",
+			dma_obj->loop_count_threshold);
+	seq_printf(s, "lwa = %lx, rwa = %lx, lra = %lx,",
+			dma_obj->local_write_available,
+			dma_obj->remote_write_available,
+			dma_obj->local_read_available);
+	seq_printf(s, "list : (%s), dma chn : (%s)\n",
+			list ? "empty" : "not empty",
+			dma_obj->dma_free ? "free" : "busy");
+
+	return 0;
+}
+
+static int rk_pcie_debugfs_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rk_pcie_debugfs_trx_show, inode->i_private);
+}
+
+static const struct file_operations rk_pcie_debugfs_fops = {
+	.owner = THIS_MODULE,
+	.open = rk_pcie_debugfs_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+#endif
+
 struct dma_trx_obj *rk_pcie_dma_obj_probe(struct device *dev)
 {
 	int ret;
@@ -676,12 +711,24 @@ struct dma_trx_obj *rk_pcie_dma_obj_probe(struct device *dev)
 	}
 
 	obj->dma_free = true;
+	obj->irq_num = 0;
 	obj->loop_count = 0;
 	obj->loop_count_threshold = 0;
 	init_completion(&obj->done);
 
 	rk_pcie_add_misc(obj);
 
+#ifdef CONFIG_DEBUG_FS
+	obj->pcie_root = debugfs_create_dir("pcie", NULL);
+	if (!obj->pcie_root) {
+		obj = ERR_PTR(-EINVAL);
+		goto free_dma_table;
+	}
+
+	debugfs_create_file("pcie_trx", 0644, obj->pcie_root, obj,
+			&rk_pcie_debugfs_fops);
+#endif
+
 	return obj;
 free_dma_table:
 	rk_pcie_dma_table_free(obj, PCIE_DMA_TABLE_NUM);
diff --git a/drivers/pci/host/rockchip-pcie-dma.h b/drivers/pci/host/rockchip-pcie-dma.h
index c90ec9943733..57b884f0b7ee 100644
--- a/drivers/pci/host/rockchip-pcie-dma.h
+++ b/drivers/pci/host/rockchip-pcie-dma.h
@@ -3,6 +3,8 @@
  * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
  */
 
+#include <linux/debugfs.h>
+
 #define PCIE_DMA_TABLE_NUM		24
 
 #define PCIE_DMA_TRX_TYPE_NUM		3
@@ -168,6 +170,8 @@ struct dma_trx_obj {
 	int				busno;
 	void				*priv;
 	struct completion		done;
+	unsigned long			irq_num;
+	struct dentry			*pcie_root;
 };
 
 #ifdef CONFIG_PCIE_DW_ROCKCHIP