Commit 6e7adf3e authored Apr 25, 2019 by Serge Semin Committed by Greg Kroah-Hartman May 02, 2019

usb: usb251xb: Add US port lanes inversion property



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@gmail.com>
Acked-by: Richard Leitner <richard.leitner@skidata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 73d31def

drivers/usb/misc/usb251xb.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -574,6 +574,8 @@ 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.

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