From 17b463cb934a4853e6127878aba6fabe7afde2c4 Mon Sep 17 00:00:00 2001
From: Thomas Makin <halorocker89@gmail.com>
Date: Sat, 1 Nov 2025 23:32:22 +0000
Subject: [PATCH] [DEBUG] xusb-tegra

---
 drivers/phy/tegra/xusb.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index 7e8fec3109d6..0670b1718bbd 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -525,6 +525,8 @@ static void tegra_xusb_port_release(struct device *dev)
 {
 	struct tegra_xusb_port *port = to_tegra_xusb_port(dev);
 
+	printk("release\n");
+
 	if (port->ops->release)
 		port->ops->release(port);
 }
@@ -541,19 +543,23 @@ static int tegra_xusb_port_init(struct tegra_xusb_port *port,
 {
 	int err;
 
+	printk("init list\n");
 	INIT_LIST_HEAD(&port->list);
 	port->padctl = padctl;
 	port->index = index;
 
+	printk("init device\n");
 	device_initialize(&port->dev);
 	port->dev.type = &tegra_xusb_port_type;
 	port->dev.of_node = of_node_get(np);
 	port->dev.parent = padctl->dev;
 
+	printk("set name\n");
 	err = dev_set_name(&port->dev, "%s-%u", name, index);
 	if (err < 0)
 		goto put_device;
 
+	printk("device add\n");
 	err = device_add(&port->dev);
 	if (err < 0)
 		goto put_device;
@@ -561,6 +567,7 @@ static int tegra_xusb_port_init(struct tegra_xusb_port *port,
 	return 0;
 
 put_device:
+	printk("put device\n");
 	put_device(&port->dev);
 	return err;
 }
@@ -969,6 +976,7 @@ static int tegra_xusb_usb3_port_parse_dt(struct tegra_xusb_usb3_port *usb3)
 	u32 value;
 	int err;
 
+	printk("check usb2-companion\n");
 	err = of_property_read_u32(np, "nvidia,usb2-companion", &value);
 	if (err < 0) {
 		dev_err(&port->dev, "failed to read port: %d\n", err);
@@ -1004,6 +1012,7 @@ static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
 	 * port is unusable. But it is valid to configure only a single port,
 	 * hence return 0 instead of an error to allow ports to be optional.
 	 */
+	printk("find port node usb3\n");
 	np = tegra_xusb_find_port_node(padctl, "usb3", index);
 	if (!np || !of_device_is_available(np))
 		goto out;
@@ -1014,6 +1023,7 @@ static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
 		goto out;
 	}
 
+	printk("xusb port init\n");
 	err = tegra_xusb_port_init(&usb3->base, padctl, np, "usb3", index);
 	if (err < 0)
 		goto out;
@@ -1026,6 +1036,7 @@ static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
 		goto out;
 	}
 
+	printk("xusb usb3 port parse dt\n");
 	err = tegra_xusb_usb3_port_parse_dt(usb3);
 	if (err < 0) {
 		tegra_xusb_port_unregister(&usb3->base);
@@ -1118,24 +1129,28 @@ static int tegra_xusb_setup_ports(struct tegra_xusb_padctl *padctl)
 	mutex_lock(&padctl->lock);
 
 	for (i = 0; i < padctl->soc->ports.usb2.count; i++) {
+		printk("add usb2 port %d\n", i);
 		err = tegra_xusb_add_usb2_port(padctl, i);
 		if (err < 0)
 			goto remove_ports;
 	}
 
 	for (i = 0; i < padctl->soc->ports.ulpi.count; i++) {
+		printk("add ulpi port %d\n", i);
 		err = tegra_xusb_add_ulpi_port(padctl, i);
 		if (err < 0)
 			goto remove_ports;
 	}
 
 	for (i = 0; i < padctl->soc->ports.hsic.count; i++) {
+		printk("add hsic port %d\n", i);
 		err = tegra_xusb_add_hsic_port(padctl, i);
 		if (err < 0)
 			goto remove_ports;
 	}
 
 	for (i = 0; i < padctl->soc->ports.usb3.count; i++) {
+		printk("add usb3 port %d\n", i);
 		err = tegra_xusb_add_usb3_port(padctl, i);
 		if (err < 0)
 			goto remove_ports;
@@ -1143,10 +1158,12 @@ static int tegra_xusb_setup_ports(struct tegra_xusb_padctl *padctl)
 
 	if (padctl->soc->need_fake_usb3_port) {
 		for (i = 0; i < padctl->soc->ports.usb2.count; i++) {
+			printk("checking usb2 port %d\n", i);
 			usb2 = tegra_xusb_find_usb2_port(padctl, i);
 			if (!usb2)
 				continue;
 
+			printk("update usb3 fake port %d\n", i);
 			err = tegra_xusb_update_usb3_fake_port(usb2);
 			if (err < 0)
 				goto remove_ports;
@@ -1154,12 +1171,14 @@ static int tegra_xusb_setup_ports(struct tegra_xusb_padctl *padctl)
 	}
 
 	list_for_each_entry(port, &padctl->ports, list) {
+		printk("enable port\n");
 		err = port->ops->enable(port);
 		if (err < 0)
 			dev_err(padctl->dev, "failed to enable port %s: %d\n",
 				dev_name(&port->dev), err);
 	}
 
+	printk("unlock\n");
 	goto unlock;
 
 remove_ports: