phy: sun4i: add support for USB phy0

The driver for sun4i USB phys currently supports
only phy1 and phy2 which are used for USB host
controllers. This patch adds support for USB phy0,
which is used by the musb hdrc USB controller.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index 0baf5efc8a40baff827bfb9aaf6e3cd0e8c094b8..6bd2b0c972ccec57d926b121c6b6fba0d6d55966 100644 (file)
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -157,6 +157,10 @@ static int sun4i_usb_phy_init(struct phy *_phy)
                return ret;
        }
 
+       /* Enable USB 45 Ohm resistor calibration */
+       if (phy->index == 0)
+               sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
+
        /* Adjust PHY's magnitude and rate */
        sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
 
@@ -213,7 +217,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
 {
        struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
 
-       if (WARN_ON(args->args[0] == 0 || args->args[0] >= data->num_phys))
+       if (args->args[0] >= data->num_phys)
                return ERR_PTR(-ENODEV);
 
        return data->phys[args->args[0]].phy;
@@ -255,8 +259,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
        if (IS_ERR(data->base))
                return PTR_ERR(data->base);
 
-       /* Skip 0, 0 is the phy for otg which is not yet supported. */
-       for (i = 1; i < data->num_phys; i++) {
+       for (i = 0; i < data->num_phys; i++) {
                struct sun4i_usb_phy *phy = data->phys + i;
                char name[16];