usb: dwc3: Add support for usb3-phy PHY configuration
When usb3-phy label is found, PHY driver is called and serdes line is
initialized. This is preparation for serdes/psgtr driver to configure GT
lines based on description in DT.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index 01bd0ca..2c5205d 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -14,6 +14,7 @@
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dwc3-uboot.h>
+#include <generic-phy.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/usb/ch9.h>
@@ -409,6 +410,17 @@
struct udevice *child = NULL;
int index = 0;
int ret;
+ struct phy phy;
+
+ ret = generic_phy_get_by_name(dev, "usb3-phy", &phy);
+ if (!ret) {
+ ret = generic_phy_init(&phy);
+ if (ret)
+ return ret;
+ } else if (ret != -ENOENT) {
+ debug("could not get phy (err %d)\n", ret);
+ return ret;
+ }
glue->regs = dev_read_addr(dev);
@@ -420,6 +432,12 @@
if (ret)
return ret;
+ if (phy.dev) {
+ ret = generic_phy_power_on(&phy);
+ if (ret)
+ return ret;
+ }
+
ret = device_find_first_child(dev, &child);
if (ret)
return ret;