diff options
| -rw-r--r-- | drivers/usb/host/xhci.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 78a2a937dd83..3f79f35d0b19 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -5065,16 +5065,26 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) } else { /* * Some 3.1 hosts return sbrn 0x30, use xhci supported protocol - * minor revision instead of sbrn + * minor revision instead of sbrn. Minor revision is a two digit + * BCD containing minor and sub-minor numbers, only show minor. */ - minor_rev = xhci->usb3_rhub.min_rev; - if (minor_rev) { + minor_rev = xhci->usb3_rhub.min_rev / 0x10; + + switch (minor_rev) { + case 2: + hcd->speed = HCD_USB32; + hcd->self.root_hub->speed = USB_SPEED_SUPER_PLUS; + hcd->self.root_hub->rx_lanes = 2; + hcd->self.root_hub->tx_lanes = 2; + break; + case 1: hcd->speed = HCD_USB31; hcd->self.root_hub->speed = USB_SPEED_SUPER_PLUS; + break; } - xhci_info(xhci, "Host supports USB 3.%x %s SuperSpeed\n", + xhci_info(xhci, "Host supports USB 3.%x %sSuperSpeed\n", minor_rev, - minor_rev ? "Enhanced" : ""); + minor_rev ? "Enhanced " : ""); xhci->usb3_rhub.hcd = hcd; /* xHCI private pointer was set in xhci_pci_probe for the second |