The driver bindings already declare the "swap-dx-lanes" property to invert the downstream ports lanes polarity. The similar config can be defined for a single upstream port - "swap-us-lanes". It's going to be boolean since there is only one upstream port on the hub. Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx> --- drivers/usb/misc/usb251xb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 4ef34df948ad..56f0a10633fc 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -531,6 +531,8 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, hub->port_swap = USB251XB_DEF_PORT_SWAP; usb251xb_get_ports_field(hub, "swap-dx-lanes", data->port_cnt, &hub->port_swap); + if (of_get_property(np, "swap-us-lanes", NULL)) + hub->port_swap |= BIT(0); /* The following parameters are currently not exposed to devicetree, but * may be as soon as needed. -- 2.21.0
