diff options
Diffstat (limited to 'src/drivers/usb/xhci.c')
| -rw-r--r-- | src/drivers/usb/xhci.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/drivers/usb/xhci.c b/src/drivers/usb/xhci.c index e9a7f4c65..21c3e0001 100644 --- a/src/drivers/usb/xhci.c +++ b/src/drivers/usb/xhci.c @@ -3051,6 +3051,19 @@ static int xhci_root_disable ( struct usb_hub *hub, struct usb_port *port ) { portsc |= XHCI_PORTSC_PED; writel ( portsc, xhci->op + XHCI_OP_PORTSC ( port->address ) ); + /* Allow time for link state to stabilise */ + mdelay ( XHCI_LINK_STATE_DELAY_MS ); + + /* Set link state to RxDetect for USB3 ports */ + if ( port->protocol >= USB_PROTO_3_0 ) { + portsc &= XHCI_PORTSC_PRESERVE; + portsc |= ( XHCI_PORTSC_PLS_RXDETECT | XHCI_PORTSC_LWS ); + writel ( portsc, xhci->op + XHCI_OP_PORTSC ( port->address ) ); + } + + /* Allow time for link state to stabilise */ + mdelay ( XHCI_LINK_STATE_DELAY_MS ); + return 0; } |