As the "reset-gpios" property is optional, don't return the error and just skip the gpio reset sequence.
Signed-off-by: Venkatesh Yadav Abbarapu venkatesh.abbarapu@amd.com ---
drivers/usb/dwc3/dwc3-generic.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c index 78966718d0..e88e0b2e5a 100644 --- a/drivers/usb/dwc3/dwc3-generic.c +++ b/drivers/usb/dwc3/dwc3-generic.c @@ -93,21 +93,21 @@ static int dwc3_generic_probe(struct udevice *dev, device_is_compatible(dev->parent, "xlnx,zynqmp-dwc3")) { rc = gpio_request_by_name(dev->parent, "reset-gpios", 0, &priv->ulpi_reset, GPIOD_ACTIVE_LOW); - if (rc) - return rc; + /* property is optional, don't return error! */ + if (rc != -ENOENT) { + /* Toggle ulpi to reset the phy. */ + rc = dm_gpio_set_value(&priv->ulpi_reset, 1); + if (rc) + return rc;
- /* Toggle ulpi to reset the phy. */ - rc = dm_gpio_set_value(&priv->ulpi_reset, 1); - if (rc) - return rc; + mdelay(5);
- mdelay(5); + rc = dm_gpio_set_value(&priv->ulpi_reset, 0); + if (rc) + return rc;
- rc = dm_gpio_set_value(&priv->ulpi_reset, 0); - if (rc) - return rc; - - mdelay(5); + mdelay(5); + } }
if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3"))