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 0baf5ef..6bd2b0c 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -157,6 +157,10 @@
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 @@
{
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 @@
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];