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-rw-r--r--drivers/phy/tegra/xusb.c21
-rw-r--r--drivers/phy/tegra/xusb.h3
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index e3bc60cfe6a1..57a2d08ef6da 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -546,13 +546,34 @@ static void tegra_xusb_port_unregister(struct tegra_xusb_port *port)
device_unregister(&port->dev);
}
+static const char *const modes[] = {
+ [USB_DR_MODE_UNKNOWN] = "",
+ [USB_DR_MODE_HOST] = "host",
+ [USB_DR_MODE_PERIPHERAL] = "peripheral",
+ [USB_DR_MODE_OTG] = "otg",
+};
+
static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
{
struct tegra_xusb_port *port = &usb2->base;
struct device_node *np = port->dev.of_node;
+ const char *mode;
usb2->internal = of_property_read_bool(np, "nvidia,internal");
+ if (!of_property_read_string(np, "mode", &mode)) {
+ int err = match_string(modes, ARRAY_SIZE(modes), mode);
+ if (err < 0) {
+ dev_err(&port->dev, "invalid value %s for \"mode\"\n",
+ mode);
+ usb2->mode = USB_DR_MODE_UNKNOWN;
+ } else {
+ usb2->mode = err;
+ }
+ } else {
+ usb2->mode = USB_DR_MODE_HOST;
+ }
+
usb2->supply = devm_regulator_get(&port->dev, "vbus");
return PTR_ERR_OR_ZERO(usb2->supply);
}
diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h
index b49dbc36efa3..bb60fc09c752 100644
--- a/drivers/phy/tegra/xusb.h
+++ b/drivers/phy/tegra/xusb.h
@@ -19,6 +19,8 @@
#include <linux/mutex.h>
#include <linux/workqueue.h>
+#include <linux/usb/otg.h>
+
/* legacy entry points for backwards-compatibility */
int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
@@ -271,6 +273,7 @@ struct tegra_xusb_usb2_port {
struct tegra_xusb_port base;
struct regulator *supply;
+ enum usb_dr_mode mode;
bool internal;
};