diff --git a/drivers/misc/rk628/rk628.c b/drivers/misc/rk628/rk628.c
index 82219a57add5..505c83026860 100644
--- a/drivers/misc/rk628/rk628.c
+++ b/drivers/misc/rk628/rk628.c
@@ -1215,6 +1215,18 @@ static int rk628_version_info(struct rk628 *rk628)
 	return ret;
 }
 
+static void rk628_debugfs_create(struct rk628 *rk628)
+{
+	rk628->debug_dir = debugfs_create_dir(dev_name(rk628->dev), debugfs_lookup("rk628", NULL));
+	if (IS_ERR(rk628->debug_dir))
+		return;
+
+	/* path example: /sys/kernel/debug/rk628/2-0050/summary */
+	debugfs_create_file("summary", 0400, rk628->debug_dir, rk628,
+			    &rk628_debugfs_summary_fops);
+	rk628_mipi_dsi_create_debugfs_file(rk628);
+}
+
 static int
 rk628_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
@@ -1380,12 +1392,7 @@ rk628_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	}
 
 	pm_runtime_enable(dev);
-	rk628->debug_dir = debugfs_create_dir(dev_name(dev), debugfs_lookup("rk628", NULL));
-	if (IS_ERR(rk628->debug_dir))
-		return 0;
-
-	/* path example: /sys/kernel/debug/rk628/2-0050/summary */
-	debugfs_create_file("summary", 0400, rk628->debug_dir, rk628, &rk628_debugfs_summary_fops);
+	rk628_debugfs_create(rk628);
 
 	return 0;
 
@@ -1400,6 +1407,7 @@ static int rk628_i2c_remove(struct i2c_client *client)
 	struct device *dev = &client->dev;
 
 	debugfs_remove_recursive(rk628->debug_dir);
+
 	if (rk628_output_is_dsi(rk628)) {
 		cancel_delayed_work_sync(&rk628->dsi_delay_work);
 		destroy_workqueue(rk628->dsi_wq);
diff --git a/drivers/misc/rk628/rk628_dsi.c b/drivers/misc/rk628/rk628_dsi.c
index 7be242826ccb..7ea67468b9b5 100644
--- a/drivers/misc/rk628/rk628_dsi.c
+++ b/drivers/misc/rk628/rk628_dsi.c
@@ -6,6 +6,7 @@
  */
 
 #include <asm/unaligned.h>
+#include <linux/debugfs.h>
 #include "rk628.h"
 #include "rk628_cru.h"
 #include "rk628_dsi.h"
@@ -1223,6 +1224,65 @@ static void rk628_dsi_bridge_enable(struct rk628 *rk628,
 	dsi_write(rk628, dsi, DSI_PWR_UP, POWER_UP);
 }
 
+static int rk628_dsi_color_bar_show(struct seq_file *s, void *data)
+{
+	seq_puts(s, "  Enable color bar:\n");
+	seq_puts(s, "      example: echo 1 > /sys/kernel/debug/rk628/2-0050/dsi_color_bar\n");
+	seq_puts(s, "  Disable color bar:\n");
+	seq_puts(s, "      example: echo 0 > /sys/kernel/debug/rk628/2-0050/dsi_color_bar\n");
+
+	return 0;
+}
+
+static int rk628_dsi_color_bar_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rk628_dsi_color_bar_show, inode->i_private);
+}
+
+static ssize_t rk628_dsi_color_bar_write(struct file *file, const char __user *ubuf,
+					 size_t len, loff_t *offp)
+{
+	struct rk628 *rk628 = ((struct seq_file *)file->private_data)->private;
+	struct rk628_dsi *dsi = &rk628->dsi0;
+	struct rk628_dsi *dsi1 = &rk628->dsi1;
+	u8 mode;
+
+	if (kstrtou8_from_user(ubuf, len, 0, &mode))
+		return -EFAULT;
+
+	dsi_update_bits(rk628, dsi, DSI_VID_MODE_CFG, VPG_EN, mode ? VPG_EN : 0);
+	if (!mode) {
+		dsi_write(rk628, dsi, DSI_PWR_UP, RESET);
+		dsi_write(rk628, dsi, DSI_PWR_UP, POWER_UP);
+	}
+
+	if (dsi->slave) {
+		dsi_update_bits(rk628, dsi1, DSI_VID_MODE_CFG, VPG_EN, mode ? VPG_EN : 0);
+		if (!mode) {
+			dsi_write(rk628, dsi1, DSI_PWR_UP, RESET);
+			dsi_write(rk628, dsi1, DSI_PWR_UP, POWER_UP);
+		}
+	}
+
+	return len;
+}
+
+static const struct file_operations rk628_dsi_color_bar_fops = {
+	.owner = THIS_MODULE,
+	.open = rk628_dsi_color_bar_open,
+	.read = seq_read,
+	.write = rk628_dsi_color_bar_write,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+void rk628_mipi_dsi_create_debugfs_file(struct rk628 *rk628)
+{
+	if (rk628_output_is_dsi(rk628))
+		debugfs_create_file("dsi_color_bar", 0600, rk628->debug_dir,
+				    rk628, &rk628_dsi_color_bar_fops);
+}
+
 void rk628_mipi_dsi_pre_enable(struct rk628 *rk628)
 {
 	struct rk628_dsi *dsi = &rk628->dsi0;
diff --git a/drivers/misc/rk628/rk628_dsi.h b/drivers/misc/rk628/rk628_dsi.h
index 7753b49e747d..9627cbad2c02 100644
--- a/drivers/misc/rk628/rk628_dsi.h
+++ b/drivers/misc/rk628/rk628_dsi.h
@@ -155,4 +155,5 @@ int rk628_dsi_parse(struct rk628 *rk628, struct device_node *dsi_np);
 void rk628_mipi_dsi_pre_enable(struct rk628 *rk628);
 void rk628_mipi_dsi_enable(struct rk628 *rk628);
 void rk628_dsi_disable(struct rk628 *rk628);
+void rk628_mipi_dsi_create_debugfs_file(struct rk628 *rk628);
 #endif