linux-kernel - [PATCH v8 2/6] dt-bindings: usb: generic: Add role-switch-default-mode binding

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Message-Id: <20200225175304.36406-3-john.stultz@linaro.org>
Date:   Tue, 25 Feb 2020 17:53:00 +0000
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        ShuFan Lee <shufan_lee@...htek.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Yu Chen <chenyu56@...wei.com>, Felipe Balbi <balbi@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Jun Li <lijun.kernel@...il.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Guillaume Gardet <Guillaume.Gardet@....com>,
        Jack Pham <jackp@...eaurora.org>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v8 2/6] dt-bindings: usb: generic: Add role-switch-default-mode binding

Add binding to configure the default role the controller
assumes is host mode when the usb role is USB_ROLE_NONE.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
CC: ShuFan Lee <shufan_lee@...htek.com>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Suzuki K Poulose <suzuki.poulose@....com>
Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: Yu Chen <chenyu56@...wei.com>
Cc: Felipe Balbi <balbi@...nel.org>
Cc: Hans de Goede <hdegoede@...hat.com>
Cc: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Jun Li <lijun.kernel@...il.com>
Cc: Valentin Schneider <valentin.schneider@....com>
Cc: Guillaume Gardet <Guillaume.Gardet@....com>
Cc: Jack Pham <jackp@...eaurora.org>
Cc: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc: linux-usb@...r.kernel.org
Cc: devicetree@...r.kernel.org
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
v5: Switch to string rather then a bool
---
 Documentation/devicetree/bindings/usb/generic.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
index e6790d2a4da9..67c51759a642 100644
--- a/Documentation/devicetree/bindings/usb/generic.txt
+++ b/Documentation/devicetree/bindings/usb/generic.txt
@@ -35,6 +35,12 @@ Optional properties:
 			the USB data role (USB host or USB device) for a given
 			USB connector, such as Type-C, Type-B(micro).
 			see connector/usb-connector.txt.
+ - role-switch-default-mode: indicating if usb-role-switch is enabled, the
+			device default operation mode of controller while usb
+			role is USB_ROLE_NONE. Valid arguments are "host" and
+			"peripheral". Defaults to "peripheral" if not
+			specified.
+
 
 This is an attribute to a USB controller such as:
 
-- 
2.17.1