usb: phy: tegra: Get PHY mode using DT

Added a new PHY mode to support OTG.
Obtained Tegra USB PHY mode using DT property.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c
index 8bcc12f6804a..0ff1f3e03b1e 100644
--- a/drivers/usb/phy/phy-tegra-usb.c
+++ b/drivers/usb/phy/phy-tegra-usb.c
@@ -687,7 +687,7 @@ static int	tegra_usb_phy_suspend(struct usb_phy *x, int suspend)
 }
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-        void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode,
+        void __iomem *regs, void *config,
         void (*set_pts)(struct usb_phy *x, u8 pts_val),
         void (*set_phcd)(struct usb_phy *x, bool enable))
 
@@ -705,7 +705,6 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
         phy->instance = instance;
         phy->regs = regs;
         phy->config = config;
-        phy->mode = phy_mode;
         phy->dev = dev;
         phy->is_legacy_phy =
                 of_property_read_bool(np, "nvidia,has-legacy-mode");
@@ -717,6 +716,16 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
         else
                 phy->is_ulpi_phy = true;
 
+        err = of_property_match_string(np, "dr_mode", "otg");
+        if (err < 0) {
+                err = of_property_match_string(np, "dr_mode", "peripheral");
+                if (err < 0)
+                        phy->mode = TEGRA_USB_PHY_MODE_HOST;
+                else
+                        phy->mode = TEGRA_USB_PHY_MODE_DEVICE;
+        } else
+                phy->mode = TEGRA_USB_PHY_MODE_OTG;
+
         if (!phy->config) {
                 if (phy->is_ulpi_phy) {
                         pr_err("%s: ulpi phy configuration missing", __func__);