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Message-ID: <1554257354-7440-4-git-send-email-chunfeng.yun@mediatek.com> Date: Wed, 3 Apr 2019 10:09:11 +0800 From: Chunfeng Yun <chunfeng.yun@...iatek.com> To: Rob Herring <robh+dt@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Heikki Krogerus <heikki.krogerus@...ux.intel.com> CC: Mark Rutland <mark.rutland@....com>, Chunfeng Yun <chunfeng.yun@...iatek.com>, Matthias Brugger <matthias.bgg@...il.com>, Adam Thomson <Adam.Thomson.Opensource@...semi.com>, Li Jun <jun.li@....com>, Badhri Jagan Sridharan <badhri@...gle.com>, Hans de Goede <hdegoede@...hat.com>, Andy Shevchenko <andy.shevchenko@...il.com>, Min Guo <min.guo@...iatek.com>, Alan Stern <stern@...land.harvard.edu>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org> Subject: [v3 PATCH 3/6] dt-bindings: usb: mtu3: add properties about USB Role Switch Now the USB Role Switch is supported, so add properties about it Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com> --- v3: no changes v2 changes: 1. fix typo 2. refer new binding about connector property --- .../devicetree/bindings/usb/mediatek,mtu3.txt | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt index 3382b5cb471d..6e004c4a89af 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt @@ -27,7 +27,9 @@ Optional properties: - ranges : allows valid 1:1 translation between child's address space and parent's address space - extcon : external connector for vbus and idpin changes detection, needed - when supports dual-role mode. + when supports dual-role mode; it's consiedered valid for compatibility + reasons, and not allowed for new bindings, use the property + usb-role-switch instead. - vbus-supply : reference to the VBUS regulator, needed when supports dual-role mode. - pinctrl-names : a pinctrl state named "default" is optional, and need be @@ -36,7 +38,8 @@ Optional properties: is not set. - pinctrl-0 : pin control group See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt - + - usb-role-switch : use USB Role Switch to support dual-role switch, but + not extcon - maximum-speed : valid arguments are "super-speed", "high-speed" and "full-speed"; refer to usb/generic.txt - enable-manual-drd : supports manual dual-role switch via debugfs; usually @@ -61,6 +64,9 @@ The xhci should be added as subnode to mtu3 as shown in the following example if host mode is enabled. The DT binding details of xhci can be found in: Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt +The port would be added as subnode if use usb-role-switch property + see graph.txt + Example: ssusb: usb@...71000 { compatible = "mediatek,mt8173-mtu3"; -- 2.20.1
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