DWC3 USB3 controllers will need USB3 PHY to be enabled, in addition to USB2 PHY, to be functional. Therefore enable USB3 PHY when available.
Signed-off-by: Vignesh R vigneshr@ti.com --- drivers/usb/host/xhci-dwc3.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c index cf1986bebd07..e7bc0bc35a86 100644 --- a/drivers/usb/host/xhci-dwc3.c +++ b/drivers/usb/host/xhci-dwc3.c @@ -23,6 +23,7 @@ DECLARE_GLOBAL_DATA_PTR;
struct xhci_dwc3_platdata { struct phy usb_phy; + struct phy usb3_phy; };
void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode) @@ -145,6 +146,26 @@ static int xhci_dwc3_probe(struct udevice *dev) } }
+ ret = generic_phy_get_by_index(dev, 1, &plat->usb3_phy); + if (ret) { + if (ret != -ENOENT) { + pr_err("Failed to get USB3 PHY for %s\n", dev->name); + return ret; + } + } else { + ret = generic_phy_init(&plat->usb3_phy); + if (ret) { + pr_err("Can't init USB3 PHY for %s\n", dev->name); + return ret; + } + + ret = generic_phy_power_on(&plat->usb3_phy); + if (ret) { + pr_err("Can't power on USB3 PHY for %s\n", dev->name); + return ret; + } + } + dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
dwc3_core_init(dwc3_reg); @@ -178,6 +199,20 @@ static int xhci_dwc3_remove(struct udevice *dev) } }
+ if (generic_phy_valid(&plat->usb3_phy)) { + ret = generic_phy_power_off(&plat->usb3_phy); + if (ret) { + pr_err("Can't poweroff USB3 PHY for %s\n", dev->name); + return ret; + } + + ret = generic_phy_exit(&plat->usb3_phy); + if (ret) { + pr_err("Can't deinit USB3 PHY for %s\n", dev->name); + return ret; + } + } + return xhci_deregister(dev); }