From: Serge Semin <fancer.lancer@gmail.com>
To: Richard Leitner <richard.leitner@skidata.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Serge Semin <Sergey.Semin@t-platforms.ru>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] usb: usb251xb: Add US port lanes inversion property
Date: Thu, 25 Apr 2019 00:12:07 +0300 [thread overview]
Message-ID: <20190424211208.17499-4-fancer.lancer@gmail.com> (raw)
In-Reply-To: <20190424211208.17499-1-fancer.lancer@gmail.com>
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>
---
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
next prev parent reply other threads:[~2019-04-24 21:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-24 21:12 [PATCH 0/3] usb: usb251xb: Add upstream port lanes polarity inversion Serge Semin
2019-04-24 21:12 ` [PATCH 1/3] usb: usb251xb: Add US lanes inversion dts-bindings Serge Semin
2019-05-02 0:32 ` Rob Herring
2019-05-02 5:42 ` Richard Leitner
2019-04-24 21:12 ` [PATCH 2/3] usb: usb251xb: Create a ports field collector method Serge Semin
2019-05-02 5:42 ` Richard Leitner
2019-04-24 21:12 ` Serge Semin [this message]
2019-05-02 5:42 ` [PATCH 3/3] usb: usb251xb: Add US port lanes inversion property Richard Leitner
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